BL1 postcode district: Bolton and around

BL1 is a postcode district in England, with 1,852 postcodes in use in 9 sectors. It has postcodes in Bolton. Its council is Bolton.

Postcodes in use
1,852
Sectors
9
Council
Bolton
Places
Bolton

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in BL1, by flood risk

Map of every postcode in BL1, by flood risk Of the 1,852 postcodes in BL1 that ONS places, 62 have a home or business at high risk, 8 are at medium risk at worst, 42 are at low risk at worst, 5 are at very low risk only and 1,735 are not on the Environment Agency's at-risk list. 4 groups of postcodes at high or medium risk are outlined: 20 postcodes at high or medium risk; 14 postcodes at high or medium risk; 12 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Bolton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. BL1 1AP: not on the flood risk listBL1 1AQ: not on the flood risk listBL1 1AR: not on the flood risk listBL1 1AT: not on the flood risk listBL1 1AU: not on the flood risk listBL1 1AW: not on the flood risk listBL1 1AX: not on the flood risk listBL1 1AY: not on the flood risk listBL1 1BB: not on the flood risk listBL1 1BD: not on the flood risk listBL1 1BG: not on the flood risk listBL1 1BH: not on the flood risk listBL1 1BN: not on the flood risk listBL1 1BU: not on the flood risk listBL1 1DD: not on the flood risk listBL1 1DG: not on the flood risk listBL1 1DH: not on the flood risk listBL1 1DJ: not on the flood risk listBL1 1DY: not on the flood risk listBL1 1EA: not on the flood risk listBL1 1EL: not on the flood risk listBL1 1ES: not on the flood risk listBL1 1EZ: not on the flood risk listBL1 1FH: not on the flood risk listBL1 1HA: not on the flood risk listBL1 1HR: not on the flood risk listBL1 1HX: not on the flood risk listBL1 1JL: not on the flood risk listBL1 1JT: not on the flood risk listBL1 1LT: not on the flood risk listBL1 1NB: not on the flood risk listBL1 1NH: not on the flood risk listBL1 1NR: not on the flood risk listBL1 1NT: not on the flood risk listBL1 1PB: not on the flood risk listBL1 1PJ: not on the flood risk listBL1 1PP: not on the flood risk listBL1 1PQ: not on the flood risk listBL1 1PT: not on the flood risk listBL1 1RD: not on the flood risk listBL1 1RT: not on the flood risk listBL1 1RU: not on the flood risk listBL1 1SY: not on the flood risk listBL1 1TD: not on the flood risk listBL1 1TS: not on the flood risk listBL1 1UG: not on the flood risk listBL1 1UH: not on the flood risk listBL1 1UN: not on the flood risk listBL1 2AA: not on the flood risk listBL1 2AD: not on the flood risk listBL1 2AF: not on the flood risk listBL1 2AL: not on the flood risk listBL1 2BE: not on the flood risk listBL1 2BJ: not on the flood risk listBL1 2BP: not on the flood risk listBL1 2BQ: not on the flood risk listBL1 2BZ: not on the flood risk listBL1 2DJ: not on the flood risk listBL1 2DL: not on the flood risk listBL1 2DP: not on the flood risk listBL1 2DQ: not on the flood risk listBL1 2DR: not on the flood risk listBL1 2DT: not on the flood risk listBL1 2DX: not on the flood risk listBL1 2EH: not on the flood risk listBL1 2EL: not on the flood risk listBL1 2EW: not on the flood risk listBL1 2EX: not on the flood risk listBL1 2FP: not on the flood risk listBL1 2HA: not on the flood risk listBL1 2HD: not on the flood risk listBL1 2HE: not on the flood risk listBL1 2HF: not on the flood risk listBL1 2HG: not on the flood risk listBL1 2HJ: not on the flood risk listBL1 2HL: not on the flood risk listBL1 2HT: not on the flood risk listBL1 2HY: not on the flood risk listBL1 2HZ: not on the flood risk listBL1 2JB: not on the flood risk listBL1 2JD: not on the flood risk listBL1 2JG: not on the flood risk listBL1 2JH: not on the flood risk listBL1 2JL: not on the flood risk listBL1 2JP: not on the flood risk listBL1 2JR: not on the flood risk listBL1 2JZ: not on the flood risk listBL1 2LA: not on the flood risk listBL1 2LB: not on the flood risk listBL1 2LE: not on the flood risk listBL1 2LH: not on the flood risk listBL1 2LL: not on the flood risk listBL1 2LN: not on the flood risk listBL1 2LP: not on the flood risk listBL1 2LQ: not on the flood risk listBL1 2LS: not on the flood risk listBL1 2LU: not on the flood risk listBL1 2ND: not on the flood risk listBL1 2NP: not on the flood risk listBL1 2NW: not on the flood risk listBL1 2NZ: not on the flood risk listBL1 2PN: not on the flood risk listBL1 2PR: not on the flood risk listBL1 2PU: not on the flood risk listBL1 2QF: not on the flood risk listBL1 2QH: not on the flood risk listBL1 2QJ: not on the flood risk listBL1 2QR: not on the flood risk listBL1 2QT: not on the flood risk listBL1 2QW: not on the flood risk listBL1 2RD: not on the flood risk listBL1 2RN: not on the flood risk listBL1 2RW: not on the flood risk listBL1 2RY: not on the flood risk listBL1 2RZ: not on the flood risk listBL1 2SB: not on the flood risk listBL1 2SE: not on the flood risk listBL1 2SF: not on the flood risk listBL1 2SG: not on the flood risk listBL1 2SL: not on the flood risk listBL1 2SP: not on the flood risk listBL1 2SQ: not on the flood risk listBL1 2SS: not on the flood risk listBL1 2SX: not on the flood risk listBL1 2SY: not on the flood risk listBL1 2TD: not on the flood risk listBL1 2TF: not on the flood risk listBL1 2TH: not on the flood risk listBL1 2TJ: not on the flood risk listBL1 2TL: not on the flood risk listBL1 2TN: not on the flood risk listBL1 2TQ: not on the flood risk listBL1 2TT: not on the flood risk listBL1 2TW: not on the flood risk listBL1 2TX: not on the flood risk listBL1 2XA: not on the flood risk listBL1 2XD: not on the flood risk listBL1 2XF: not on the flood risk listBL1 2XH: not on the flood risk listBL1 2XS: not on the flood risk listBL1 2XW: not on the flood risk listBL1 3AA: not on the flood risk listBL1 3AB: not on the flood risk listBL1 3AD: not on the flood risk listBL1 3AE: not on the flood risk listBL1 3AG: not on the flood risk listBL1 3AJ: not on the flood risk listBL1 3AL: not on the flood risk listBL1 3AP: not on the flood risk listBL1 3AR: not on the flood risk listBL1 3AU: not on the flood risk listBL1 3AX: not on the flood risk listBL1 3BA: not on the flood risk listBL1 3BD: not on the flood risk listBL1 3BE: not on the flood risk listBL1 3BG: not on the flood risk listBL1 3BH: not on the flood risk listBL1 3BJ: not on the flood risk listBL1 3BL: not on the flood risk listBL1 3BN: not on the flood risk listBL1 3BS: not on the flood risk listBL1 3BT: not on the flood risk listBL1 3BX: not on the flood risk listBL1 3BY: not on the flood risk listBL1 3DB: not on the flood risk listBL1 3DE: not on the flood risk listBL1 3DG: not on the flood risk listBL1 3DH: not on the flood risk listBL1 3DJ: not on the flood risk listBL1 3DN: not on the flood risk listBL1 3DP: not on the flood risk listBL1 3DS: not on the flood risk listBL1 3DT: not on the flood risk listBL1 3DY: not on the flood risk listBL1 3DZ: not on the flood risk listBL1 3EB: not on the flood risk listBL1 3EF: not on the flood risk listBL1 3EG: not on the flood risk listBL1 3EH: not on the flood risk listBL1 3EJ: not on the flood risk listBL1 3EN: not on the flood risk listBL1 3ER: not on the flood risk listBL1 3ET: not on the flood risk listBL1 3EU: not on the flood risk listBL1 3EW: not on the flood risk listBL1 3EY: not on the flood risk listBL1 3EZ: not on the flood risk listBL1 3FW: not on the flood risk listBL1 3HA: not on the flood risk listBL1 3HD: not on the flood risk listBL1 3HE: not on the flood risk listBL1 3HF: not on the flood risk listBL1 3HG: not on the flood risk listBL1 3HJ: not on the flood risk listBL1 3HL: not on the flood risk listBL1 3HN: not on the flood risk listBL1 3HP: not on the flood risk listBL1 3HQ: not on the flood risk listBL1 3HW: not on the flood risk listBL1 3HY: not on the flood risk listBL1 3HZ: not on the flood risk listBL1 3JA: not on the flood risk listBL1 3JB: not on the flood risk listBL1 3JD: not on the flood risk listBL1 3JF: not on the flood risk listBL1 3JP: not on the flood risk listBL1 3JS: not on the flood risk listBL1 3JT: not on the flood risk listBL1 3JU: not on the flood risk listBL1 3JX: not on the flood risk listBL1 3JZ: not on the flood risk listBL1 3LA: not on the flood risk listBL1 3LB: not on the flood risk listBL1 3LE: not on the flood risk listBL1 3LF: not on the flood risk listBL1 3LG: not on the flood risk listBL1 3LH: not on the flood risk listBL1 3LJ: not on the flood risk listBL1 3LP: not on the flood risk listBL1 3LR: not on the flood risk listBL1 3LS: not on the flood risk listBL1 3NA: not on the flood risk listBL1 3NE: not on the flood risk listBL1 3NF: not on the flood risk listBL1 3NG: not on the flood risk listBL1 3NJ: not on the flood risk listBL1 3NL: not on the flood risk listBL1 3NP: not on the flood risk listBL1 3NR: not on the flood risk listBL1 3NS: not on the flood risk listBL1 3NT: not on the flood risk listBL1 3NX: not on the flood risk listBL1 3NY: not on the flood risk listBL1 3NZ: not on the flood risk listBL1 3PB: not on the flood risk listBL1 3PD: not on the flood risk listBL1 3PF: not on the flood risk listBL1 3PG: not on the flood risk listBL1 3PH: not on the flood risk listBL1 3PL: not on the flood risk listBL1 3PY: not on the flood risk listBL1 3QE: not on the flood risk listBL1 3QF: not on the flood risk listBL1 3QG: not on the flood risk listBL1 3QJ: not on the flood risk listBL1 3QN: not on the flood risk listBL1 3QP: not on the flood risk listBL1 3QS: not on the flood risk listBL1 3QU: not on the flood risk listBL1 3QX: not on the flood risk listBL1 3QZ: not on the flood risk listBL1 3RA: not on the flood risk listBL1 3RD: not on the flood risk listBL1 3RF: not on the flood risk listBL1 3RG: not on the flood risk listBL1 3RH: not on the flood risk listBL1 3RJ: not on the flood risk listBL1 3RN: not on the flood risk listBL1 3RT: not on the flood risk listBL1 3RY: not on the flood risk listBL1 3SA: not on the flood risk listBL1 3SH: not on the flood risk listBL1 3SN: not on the flood risk listBL1 3SW: not on the flood risk listBL1 3TB: not on the flood risk listBL1 3TE: not on the flood risk listBL1 3TJ: not on the flood risk listBL1 3TZ: not on the flood risk listBL1 3UA: not on the flood risk listBL1 3UB: not on the flood risk listBL1 3XA: not on the flood risk listBL1 3XB: not on the flood risk listBL1 3XD: not on the flood risk listBL1 3XE: not on the flood risk listBL1 3XG: not on the flood risk listBL1 3XH: not on the flood risk listBL1 4AD: not on the flood risk listBL1 4AP: not on the flood risk listBL1 4AY: not on the flood risk listBL1 4AZ: not on the flood risk listBL1 4BA: not on the flood risk listBL1 4BB: not on the flood risk listBL1 4BD: not on the flood risk listBL1 4BG: not on the flood risk listBL1 4BL: not on the flood risk listBL1 4BN: not on the flood risk listBL1 4BP: not on the flood risk listBL1 4BR: not on the flood risk listBL1 4BS: not on the flood risk listBL1 4BW: not on the flood risk listBL1 4BY: not on the flood risk listBL1 4DA: not on the flood risk listBL1 4DG: not on the flood risk listBL1 4DH: not on the flood risk listBL1 4DL: not on the flood risk listBL1 4DN: not on the flood risk listBL1 4DS: not on the flood risk listBL1 4DT: not on the flood risk listBL1 4DU: not on the flood risk listBL1 4DX: not on the flood risk listBL1 4DY: not on the flood risk listBL1 4DZ: not on the flood risk listBL1 4EA: not on the flood risk listBL1 4EB: not on the flood risk listBL1 4EF: not on the flood risk listBL1 4EG: not on the flood risk listBL1 4EH: not on the flood risk listBL1 4EL: not on the flood risk listBL1 4EN: not on the flood risk listBL1 4EQ: not on the flood risk listBL1 4ER: not on the flood risk listBL1 4ET: not on the flood risk listBL1 4EU: not on the flood risk listBL1 4EX: not on the flood risk listBL1 4EY: not on the flood risk listBL1 4EZ: not on the flood risk listBL1 4GQ: not on the flood risk listBL1 4HG: not on the flood risk listBL1 4HH: not on the flood risk listBL1 4HJ: not on the flood risk listBL1 4HL: not on the flood risk listBL1 4HS: not on the flood risk listBL1 4JB: not on the flood risk listBL1 4JD: not on the flood risk listBL1 4JE: not on the flood risk listBL1 4JH: not on the flood risk listBL1 4JL: not on the flood risk listBL1 4JN: not on the flood risk listBL1 4JP: not on the flood risk listBL1 4JU: not on the flood risk listBL1 4JW: not on the flood risk listBL1 4JZ: not on the flood risk listBL1 4LA: not on the flood risk listBL1 4LD: not on the flood risk listBL1 4ND: not on the flood risk listBL1 4NE: not on the flood risk listBL1 4NH: not on the flood risk listBL1 4NR: not on the flood risk listBL1 4PA: not on the flood risk listBL1 4PD: not on the flood risk listBL1 4PE: not on the flood risk listBL1 4PF: not on the flood risk listBL1 4PL: not on the flood risk listBL1 4PN: not on the flood risk listBL1 4PP: not on the flood risk listBL1 4PQ: not on the flood risk listBL1 4PR: not on the flood risk listBL1 4PT: not on the flood risk listBL1 4PU: not on the flood risk listBL1 4PX: not on the flood risk listBL1 4QE: not on the flood risk listBL1 4QF: not on the flood risk listBL1 4QG: not on the flood risk listBL1 4QH: not on the flood risk listBL1 4QP: not on the flood risk listBL1 4QQ: not on the flood risk listBL1 4QR: not on the flood risk listBL1 4QT: not on the flood risk listBL1 4QZ: not on the flood risk listBL1 4RE: not on the flood risk listBL1 4RF: not on the flood risk listBL1 4RG: not on the flood risk listBL1 4RH: not on the flood risk listBL1 4RJ: not on the flood risk listBL1 4RL: not on the flood risk listBL1 4RP: not on the flood risk listBL1 4RQ: not on the flood risk listBL1 4RR: not on the flood risk listBL1 4RS: not on the flood risk listBL1 4RT: not on the flood risk listBL1 4RU: not on the flood risk listBL1 4SH: not on the flood risk listBL1 4SJ: not on the flood risk listBL1 4SL: not on the flood risk listBL1 4SN: not on the flood risk listBL1 4SS: not on the flood risk listBL1 4SU: not on the flood risk listBL1 4TA: not on the flood risk listBL1 4TR: not on the flood risk listBL1 4TS: not on the flood risk listBL1 4TU: not on the flood risk listBL1 4TX: not on the flood risk listBL1 4UA: not on the flood risk listBL1 4UB: not on the flood risk listBL1 4UH: not on the flood risk listBL1 5AB: not on the flood risk listBL1 5AD: not on the flood risk listBL1 5AE: not on the flood risk listBL1 5AF: not on the flood risk listBL1 5AG: not on the flood risk listBL1 5AH: not on the flood risk listBL1 5AJ: not on the flood risk listBL1 5AL: not on the flood risk listBL1 5AN: not on the flood risk listBL1 5AQ: not on the flood risk listBL1 5AR: not on the flood risk listBL1 5AS: not on the flood risk listBL1 5AT: not on the flood risk listBL1 5AU: not on the flood risk listBL1 5AW: not on the flood risk listBL1 5AY: not on the flood risk listBL1 5AZ: not on the flood risk listBL1 5BA: not on the flood risk listBL1 5BB: not on the flood risk listBL1 5BD: not on the flood risk listBL1 5BE: not on the flood risk listBL1 5BF: not on the flood risk listBL1 5BH: not on the flood risk listBL1 5BL: not on the flood risk listBL1 5BP: not on the flood risk listBL1 5BQ: not on the flood risk listBL1 5BU: not on the flood risk listBL1 5BW: not on the flood risk listBL1 5BX: not on the flood risk listBL1 5BY: not on the flood risk listBL1 5DA: not on the flood risk listBL1 5DB: not on the flood risk listBL1 5DD: not on the flood risk listBL1 5DE: not on the flood risk listBL1 5DF: not on the flood risk listBL1 5DG: not on the flood risk listBL1 5DH: not on the flood risk listBL1 5DJ: not on the flood risk listBL1 5DL: not on the flood risk listBL1 5DN: not on the flood risk listBL1 5DP: not on the flood risk listBL1 5DQ: not on the flood risk listBL1 5DR: not on the flood risk listBL1 5DS: not on the flood risk listBL1 5DT: not on the flood risk listBL1 5DU: not on the flood risk listBL1 5DW: not on the flood risk listBL1 5DX: not on the flood risk listBL1 5DZ: not on the flood risk listBL1 5EA: not on the flood risk listBL1 5EB: not on the flood risk listBL1 5ED: not on the flood risk listBL1 5EE: not on the flood risk listBL1 5EF: not on the flood risk listBL1 5EG: not on the flood risk listBL1 5EH: not on the flood risk listBL1 5EJ: not on the flood risk listBL1 5EL: not on the flood risk listBL1 5EN: not on the flood risk listBL1 5EP: not on the flood risk listBL1 5EQ: not on the flood risk listBL1 5ER: not on the flood risk listBL1 5ES: not on the flood risk listBL1 5EU: not on the flood risk listBL1 5EW: not on the flood risk listBL1 5EX: not on the flood risk listBL1 5EY: not on the flood risk listBL1 5FA: not on the flood risk listBL1 5FB: not on the flood risk listBL1 5FF: not on the flood risk listBL1 5FG: not on the flood risk listBL1 5FJ: not on the flood risk listBL1 5FR: not on the flood risk listBL1 5FY: not on the flood risk listBL1 5GJ: not on the flood risk listBL1 5GP: not on the flood risk listBL1 5GS: not on the flood risk listBL1 5GU: not on the flood risk listBL1 5GX: not on the flood risk listBL1 5GY: not on the flood risk listBL1 5HA: not on the flood risk listBL1 5HD: not on the flood risk listBL1 5HF: not on the flood risk listBL1 5HG: not on the flood risk listBL1 5HL: not on the flood risk listBL1 5HN: not on the flood risk listBL1 5HT: not on the flood risk listBL1 5HU: not on the flood risk listBL1 5HW: not on the flood risk listBL1 5HX: not on the flood risk listBL1 5HZ: not on the flood risk listBL1 5JA: not on the flood risk listBL1 5JD: not on the flood risk listBL1 5JE: not on the flood risk listBL1 5JG: not on the flood risk listBL1 5JL: not on the flood risk listBL1 5JN: not on the flood risk listBL1 5JS: not on the flood risk listBL1 5JT: not on the flood risk listBL1 5JU: not on the flood risk listBL1 5JX: not on the flood risk listBL1 5JZ: not on the flood risk listBL1 5LA: not on the flood risk listBL1 5LB: not on the flood risk listBL1 5LD: not on the flood risk listBL1 5LE: not on the flood risk listBL1 5LF: not on the flood risk listBL1 5LH: not on the flood risk listBL1 5LJ: not on the flood risk listBL1 5LL: not on the flood risk listBL1 5LN: not on the flood risk listBL1 5LP: not on the flood risk listBL1 5LS: not on the flood risk listBL1 5LU: not on the flood risk listBL1 5LW: not on the flood risk listBL1 5LX: not on the flood risk listBL1 5LZ: not on the flood risk listBL1 5NE: not on the flood risk listBL1 5NG: not on the flood risk listBL1 5NJ: not on the flood risk listBL1 5NL: not on the flood risk listBL1 5NN: not on the flood risk listBL1 5NP: not on the flood risk listBL1 5NQ: not on the flood risk listBL1 5NR: not on the flood risk listBL1 5NS: not on the flood risk listBL1 5NU: not on the flood risk listBL1 5NY: not on the flood risk listBL1 5NZ: not on the flood risk listBL1 5PB: not on the flood risk listBL1 5PD: not on the flood risk listBL1 5PE: not on the flood risk listBL1 5PF: not on the flood risk listBL1 5PG: not on the flood risk listBL1 5PH: not on the flood risk listBL1 5PL: not on the flood risk listBL1 5PN: not on the flood risk listBL1 5PQ: not on the flood risk listBL1 5PR: not on the flood risk listBL1 5PT: not on the flood risk listBL1 5PU: not on the flood risk listBL1 5PX: not on the flood risk listBL1 5QB: not on the flood risk listBL1 5QD: not on the flood risk listBL1 5QE: not on the flood risk listBL1 5QH: not on the flood risk listBL1 5QJ: not on the flood risk listBL1 5QL: not on the flood risk listBL1 5QN: not on the flood risk listBL1 5QQ: not on the flood risk listBL1 5QS: not on the flood risk listBL1 5QT: not on the flood risk listBL1 5QX: not on the flood risk listBL1 5QY: not on the flood risk listBL1 5QZ: not on the flood risk listBL1 5RB: not on the flood risk listBL1 5RD: not on the flood risk listBL1 5RE: not on the flood risk listBL1 5RG: not on the flood risk listBL1 5RH: not on the flood risk listBL1 5RJ: not on the flood risk listBL1 5RN: not on the flood risk listBL1 5RP: not on the flood risk listBL1 5RQ: not on the flood risk listBL1 5RR: not on the flood risk listBL1 5RS: not on the flood risk listBL1 5RT: not on the flood risk listBL1 5RU: not on the flood risk listBL1 5RW: not on the flood risk listBL1 5RX: not on the flood risk listBL1 5RY: not on the flood risk listBL1 5RZ: not on the flood risk listBL1 5SD: not on the flood risk listBL1 5SE: not on the flood risk listBL1 5SF: not on the flood risk listBL1 5SG: not on the flood risk listBL1 5SL: not on the flood risk listBL1 5SN: not on the flood risk listBL1 5SP: not on the flood risk listBL1 5SQ: not on the flood risk listBL1 5ST: not on the flood risk listBL1 5SU: not on the flood risk listBL1 5SW: not on the flood risk listBL1 5SX: not on the flood risk listBL1 5SY: not on the flood risk listBL1 5SZ: not on the flood risk listBL1 5TA: not on the flood risk listBL1 5TB: not on the flood risk listBL1 5TD: not on the flood risk listBL1 5TE: not on the flood risk listBL1 5TF: not on the flood risk listBL1 5TG: not on the flood risk listBL1 5TH: not on the flood risk listBL1 5TL: not on the flood risk listBL1 5TN: not on the flood risk listBL1 5TP: not on the flood risk listBL1 5TQ: not on the flood risk listBL1 5TR: not on the flood risk listBL1 5TS: not on the flood risk listBL1 5TU: not on the flood risk listBL1 5TX: not on the flood risk listBL1 5TY: not on the flood risk listBL1 5TZ: not on the flood risk listBL1 5UA: not on the flood risk listBL1 5UB: not on the flood risk listBL1 5UE: not on the flood risk listBL1 5UF: not on the flood risk listBL1 5UG: not on the flood risk listBL1 5UH: not on the flood risk listBL1 5UJ: not on the flood risk listBL1 5UL: not on the flood risk listBL1 5UN: not on the flood risk listBL1 5UP: not on the flood risk listBL1 5UQ: not on the flood risk listBL1 5UR: not on the flood risk listBL1 5UT: not on the flood risk listBL1 5UU: not on the flood risk listBL1 5UW: not on the flood risk listBL1 5UX: not on the flood risk listBL1 5WA: not on the flood risk listBL1 5XA: not on the flood risk listBL1 5XB: not on the flood risk listBL1 5XD: not on the flood risk listBL1 5XE: not on the flood risk listBL1 5XF: not on the flood risk listBL1 5XG: not on the flood risk listBL1 5XJ: not on the flood risk listBL1 5XL: not on the flood risk listBL1 5XN: not on the flood risk listBL1 5XQ: not on the flood risk listBL1 5XR: not on the flood risk listBL1 5XZ: not on the flood risk listBL1 5YA: not on the flood risk listBL1 6AA: not on the flood risk listBL1 6AB: not on the flood risk listBL1 6AF: not on the flood risk listBL1 6AG: not on the flood risk listBL1 6AJ: not on the flood risk listBL1 6AL: not on the flood risk listBL1 6AN: not on the flood risk listBL1 6AP: not on the flood risk listBL1 6AS: not on the flood risk listBL1 6AU: not on the flood risk listBL1 6AZ: not on the flood risk listBL1 6BA: not on the flood risk listBL1 6BB: not on the flood risk listBL1 6BD: not on the flood risk listBL1 6BG: not on the flood risk listBL1 6BL: not on the flood risk listBL1 6BN: not on the flood risk listBL1 6BQ: not on the flood risk listBL1 6BS: not on the flood risk listBL1 6BU: not on the flood risk listBL1 6BW: not on the flood risk listBL1 6BY: not on the flood risk listBL1 6DA: not on the flood risk listBL1 6DD: not on the flood risk listBL1 6DG: not on the flood risk listBL1 6DN: not on the flood risk listBL1 6DP: not on the flood risk listBL1 6DQ: not on the flood risk listBL1 6DT: not on the flood risk listBL1 6DX: not on the flood risk listBL1 6DY: not on the flood risk listBL1 6DZ: not on the flood risk listBL1 6EE: not on the flood risk listBL1 6EF: not on the flood risk listBL1 6EG: not on the flood risk listBL1 6EH: not on the flood risk listBL1 6EP: not on the flood risk listBL1 6ER: not on the flood risk listBL1 6ES: not on the flood risk listBL1 6ET: not on the flood risk listBL1 6EW: not on the flood risk listBL1 6EX: not on the flood risk listBL1 6FS: not on the flood risk listBL1 6FT: not on the flood risk listBL1 6FU: not on the flood risk listBL1 6FW: not on the flood risk listBL1 6FX: not on the flood risk listBL1 6HE: not on the flood risk listBL1 6HF: not on the flood risk listBL1 6HG: not on the flood risk listBL1 6HH: not on the flood risk listBL1 6HL: not on the flood risk listBL1 6HN: not on the flood risk listBL1 6HR: not on the flood risk listBL1 6HT: not on the flood risk listBL1 6HU: not on the flood risk listBL1 6HX: not on the flood risk listBL1 6JA: not on the flood risk listBL1 6JD: not on the flood risk listBL1 6JF: not on the flood risk listBL1 6JG: not on the flood risk listBL1 6JP: not on the flood risk listBL1 6JR: not on the flood risk listBL1 6JS: not on the flood risk listBL1 6JT: not on the flood risk listBL1 6JY: not on the flood risk listBL1 6JZ: not on the flood risk listBL1 6LA: not on the flood risk listBL1 6LD: not on the flood risk listBL1 6LF: not on the flood risk listBL1 6LG: not on the flood risk listBL1 6LJ: not on the flood risk listBL1 6LL: not on the flood risk listBL1 6LT: not on the flood risk listBL1 6LU: not on the flood risk listBL1 6LX: not on the flood risk listBL1 6LY: not on the flood risk listBL1 6LZ: not on the flood risk listBL1 6NA: not on the flood risk listBL1 6NB: not on the flood risk listBL1 6NE: not on the flood risk listBL1 6NN: not on the flood risk listBL1 6NP: not on the flood risk listBL1 6NR: not on the flood risk listBL1 6NS: not on the flood risk listBL1 6NT: not on the flood risk listBL1 6NU: not on the flood risk listBL1 6NX: not on the flood risk listBL1 6NY: not on the flood risk listBL1 6PA: not on the flood risk listBL1 6PD: not on the flood risk listBL1 6PF: not on the flood risk listBL1 6PG: not on the flood risk listBL1 6PH: not on the flood risk listBL1 6PJ: not on the flood risk listBL1 6PN: not on the flood risk listBL1 6PP: not on the flood risk listBL1 6PQ: not on the flood risk listBL1 6PT: not on the flood risk listBL1 6PZ: not on the flood risk listBL1 6QD: not on the flood risk listBL1 6QE: not on the flood risk listBL1 6QF: not on the flood risk listBL1 6QH: not on the flood risk listBL1 6QJ: not on the flood risk listBL1 6QL: not on the flood risk listBL1 6QN: not on the flood risk listBL1 6QP: not on the flood risk listBL1 6QR: not on the flood risk listBL1 6QS: not on the flood risk listBL1 6QT: not on the flood risk listBL1 6QU: not on the flood risk listBL1 6QW: not on the flood risk listBL1 6QX: not on the flood risk listBL1 6QY: not on the flood risk listBL1 6RA: not on the flood risk listBL1 6RB: not on the flood risk listBL1 6RD: not on the flood risk listBL1 6RE: not on the flood risk listBL1 6RH: not on the flood risk listBL1 6RJ: not on the flood risk listBL1 6RL: not on the flood risk listBL1 6RN: not on the flood risk listBL1 6RP: not on the flood risk listBL1 6RQ: not on the flood risk listBL1 6RS: not on the flood risk listBL1 6RU: not on the flood risk listBL1 6RW: not on the flood risk listBL1 6RY: not on the flood risk listBL1 6RZ: not on the flood risk listBL1 6TA: not on the flood risk listBL1 6TB: not on the flood risk listBL1 7AA: not on the flood risk listBL1 7AB: not on the flood risk listBL1 7AF: not on the flood risk listBL1 7AN: not on the flood risk listBL1 7AR: not on the flood risk listBL1 7AU: not on the flood risk listBL1 7AX: not on the flood risk listBL1 7AY: not on the flood risk listBL1 7BA: not on the flood risk listBL1 7BB: not on the flood risk listBL1 7BD: not on the flood risk listBL1 7BE: not on the flood risk listBL1 7BF: not on the flood risk listBL1 7BG: not on the flood risk listBL1 7BH: not on the flood risk listBL1 7BL: not on the flood risk listBL1 7BN: not on the flood risk listBL1 7BP: not on the flood risk listBL1 7BR: not on the flood risk listBL1 7BS: not on the flood risk listBL1 7BT: not on the flood risk listBL1 7BU: not on the flood risk listBL1 7BW: not on the flood risk listBL1 7BX: not on the flood risk listBL1 7BY: not on the flood risk listBL1 7BZ: not on the flood risk listBL1 7DB: not on the flood risk listBL1 7DD: not on the flood risk listBL1 7DE: not on the flood risk listBL1 7DG: not on the flood risk listBL1 7DH: not on the flood risk listBL1 7DJ: not on the flood risk listBL1 7DN: not on the flood risk listBL1 7DQ: not on the flood risk listBL1 7DR: not on the flood risk listBL1 7DT: not on the flood risk listBL1 7DW: not on the flood risk listBL1 7DX: not on the flood risk listBL1 7EA: not on the flood risk listBL1 7EB: not on the flood risk listBL1 7EE: not on the flood risk listBL1 7EF: not on the flood risk listBL1 7EG: not on the flood risk listBL1 7EH: not on the flood risk listBL1 7EJ: not on the flood risk listBL1 7EL: not on the flood risk listBL1 7EN: not on the flood risk listBL1 7EP: not on the flood risk listBL1 7EQ: not on the flood risk listBL1 7ER: not on the flood risk listBL1 7ES: not on the flood risk listBL1 7EU: not on the flood risk listBL1 7EW: not on the flood risk listBL1 7EY: not on the flood risk listBL1 7EZ: not on the flood risk listBL1 7GE: not on the flood risk listBL1 7HA: not on the flood risk listBL1 7HB: not on the flood risk listBL1 7HD: not on the flood risk listBL1 7HE: not on the flood risk listBL1 7HG: not on the flood risk listBL1 7HH: not on the flood risk listBL1 7HJ: not on the flood risk listBL1 7HL: not on the flood risk listBL1 7HP: not on the flood risk listBL1 7HQ: not on the flood risk listBL1 7HR: not on the flood risk listBL1 7HS: not on the flood risk listBL1 7HU: not on the flood risk listBL1 7HY: not on the flood risk listBL1 7JB: not on the flood risk listBL1 7JD: not on the flood risk listBL1 7JJ: not on the flood risk listBL1 7JN: not on the flood risk listBL1 7JP: not on the flood risk listBL1 7JQ: not on the flood risk listBL1 7JR: not on the flood risk listBL1 7JS: not on the flood risk listBL1 7JT: not on the flood risk listBL1 7JU: not on the flood risk listBL1 7JW: not on the flood risk listBL1 7JZ: not on the flood risk listBL1 7LB: not on the flood risk listBL1 7LD: not on the flood risk listBL1 7LF: not on the flood risk listBL1 7LG: not on the flood risk listBL1 7LH: not on the flood risk listBL1 7LN: not on the flood risk listBL1 7LP: not on the flood risk listBL1 7LQ: not on the flood risk listBL1 7LS: not on the flood risk listBL1 7LT: not on the flood risk listBL1 7LU: not on the flood risk listBL1 7LY: not on the flood risk listBL1 7LZ: not on the flood risk listBL1 7NA: not on the flood risk listBL1 7NB: not on the flood risk listBL1 7ND: not on the flood risk listBL1 7NE: not on the flood risk listBL1 7NF: not on the flood risk listBL1 7NH: not on the flood risk listBL1 7NJ: not on the flood risk listBL1 7NL: not on the flood risk listBL1 7NP: not on the flood risk listBL1 7NU: not on the flood risk listBL1 7NX: not on the flood risk listBL1 7NY: not on the flood risk listBL1 7NZ: not on the flood risk listBL1 7PA: not on the flood risk listBL1 7PB: not on the flood risk listBL1 7PD: not on the flood risk listBL1 7PE: not on the flood risk listBL1 7PF: not on the flood risk listBL1 7PG: not on the flood risk listBL1 7PH: not on the flood risk listBL1 7PJ: not on the flood risk listBL1 7PL: not on the flood risk listBL1 7PP: not on the flood risk listBL1 7PQ: not on the flood risk listBL1 7PR: not on the flood risk listBL1 7PS: not on the flood risk listBL1 7PT: not on the flood risk listBL1 7PU: not on the flood risk listBL1 7PW: not on the flood risk listBL1 7PX: not on the flood risk listBL1 7PY: not on the flood risk listBL1 7PZ: not on the flood risk listBL1 7QB: not on the flood risk listBL1 7QD: not on the flood risk listBL1 7QE: not on the flood risk listBL1 7QF: not on the flood risk listBL1 7QG: not on the flood risk listBL1 7QS: not on the flood risk listBL1 7QT: not on the flood risk listBL1 7RA: not on the flood risk listBL1 7RB: not on the flood risk listBL1 7RD: not on the flood risk listBL1 7RE: not on the flood risk listBL1 7RF: not on the flood risk listBL1 7RG: not on the flood risk listBL1 7RH: not on the flood risk listBL1 7RJ: not on the flood risk listBL1 7RL: not on the flood risk listBL1 7RN: not on the flood risk listBL1 7RT: not on the flood risk listBL1 7RU: not on the flood risk listBL1 7RX: not on the flood risk listBL1 7RY: not on the flood risk listBL1 7SJ: not on the flood risk listBL1 7SL: not on the flood risk listBL1 7TA: not on the flood risk listBL1 7TB: not on the flood risk listBL1 7TD: not on the flood risk listBL1 8AA: not on the flood risk listBL1 8AD: not on the flood risk listBL1 8AE: not on the flood risk listBL1 8AF: not on the flood risk listBL1 8AH: not on the flood risk listBL1 8AJ: not on the flood risk listBL1 8AN: not on the flood risk listBL1 8AP: not on the flood risk listBL1 8AR: not on the flood risk listBL1 8AU: not on the flood risk listBL1 8AX: not on the flood risk listBL1 8AY: not on the flood risk listBL1 8AZ: not on the flood risk listBL1 8BB: not on the flood risk listBL1 8BD: not on the flood risk listBL1 8BE: not on the flood risk listBL1 8BG: not on the flood risk listBL1 8BL: not on the flood risk listBL1 8BS: not on the flood risk listBL1 8BT: not on the flood risk listBL1 8BW: not on the flood risk listBL1 8BX: not on the flood risk listBL1 8DD: not on the flood risk listBL1 8DF: not on the flood risk listBL1 8DJ: not on the flood risk listBL1 8DL: not on the flood risk listBL1 8DN: not on the flood risk listBL1 8DR: not on the flood risk listBL1 8DS: not on the flood risk listBL1 8DW: not on the flood risk listBL1 8EA: not on the flood risk listBL1 8EB: not on the flood risk listBL1 8ED: not on the flood risk listBL1 8EE: not on the flood risk listBL1 8EF: not on the flood risk listBL1 8EG: not on the flood risk listBL1 8EH: not on the flood risk listBL1 8EL: not on the flood risk listBL1 8EP: not on the flood risk listBL1 8ER: not on the flood risk listBL1 8ET: not on the flood risk listBL1 8EY: not on the flood risk listBL1 8EZ: not on the flood risk listBL1 8FS: not on the flood risk listBL1 8FU: not on the flood risk listBL1 8FY: not on the flood risk listBL1 8FZ: not on the flood risk listBL1 8GA: not on the flood risk listBL1 8GB: not on the flood risk listBL1 8GE: not on the flood risk listBL1 8GF: not on the flood risk listBL1 8GG: not on the flood risk listBL1 8GH: not on the flood risk listBL1 8GJ: not on the flood risk listBL1 8GL: not on the flood risk listBL1 8GN: not on the flood risk listBL1 8GP: not on the flood risk listBL1 8GQ: not on the flood risk listBL1 8GR: not on the flood risk listBL1 8HH: not on the flood risk listBL1 8HJ: not on the flood risk listBL1 8HN: not on the flood risk listBL1 8HQ: not on the flood risk listBL1 8HS: not on the flood risk listBL1 8HT: not on the flood risk listBL1 8HU: not on the flood risk listBL1 8JA: not on the flood risk listBL1 8JD: not on the flood risk listBL1 8JE: not on the flood risk listBL1 8JJ: not on the flood risk listBL1 8JL: not on the flood risk listBL1 8JP: not on the flood risk listBL1 8JS: not on the flood risk listBL1 8JU: not on the flood risk listBL1 8JW: not on the flood risk listBL1 8JX: not on the flood risk listBL1 8JY: not on the flood risk listBL1 8LD: not on the flood risk listBL1 8LG: not on the flood risk listBL1 8LL: not on the flood risk listBL1 8LN: not on the flood risk listBL1 8LT: not on the flood risk listBL1 8NE: not on the flood risk listBL1 8NP: not on the flood risk listBL1 8NT: not on the flood risk listBL1 8NW: not on the flood risk listBL1 8NZ: not on the flood risk listBL1 8PB: not on the flood risk listBL1 8PF: not on the flood risk listBL1 8PJ: not on the flood risk listBL1 8PP: not on the flood risk listBL1 8PR: not on the flood risk listBL1 8PT: not on the flood risk listBL1 8PU: not on the flood risk listBL1 8PX: not on the flood risk listBL1 8PY: not on the flood risk listBL1 8PZ: not on the flood risk listBL1 8QA: not on the flood risk listBL1 8QD: not on the flood risk listBL1 8QE: not on the flood risk listBL1 8QG: not on the flood risk listBL1 8QH: not on the flood risk listBL1 8QP: not on the flood risk listBL1 8QX: not on the flood risk listBL1 8QZ: not on the flood risk listBL1 8RA: not on the flood risk listBL1 8RD: not on the flood risk listBL1 8RE: not on the flood risk listBL1 8RH: not on the flood risk listBL1 8RL: not on the flood risk listBL1 8RN: not on the flood risk listBL1 8RP: not on the flood risk listBL1 8RS: not on the flood risk listBL1 8RW: not on the flood risk listBL1 8RX: not on the flood risk listBL1 8RZ: not on the flood risk listBL1 8SA: not on the flood risk listBL1 8SB: not on the flood risk listBL1 8SE: not on the flood risk listBL1 8SG: not on the flood risk listBL1 8SH: not on the flood risk listBL1 8SJ: not on the flood risk listBL1 8SL: not on the flood risk listBL1 8SN: not on the flood risk listBL1 8SQ: not on the flood risk listBL1 8SR: not on the flood risk listBL1 8SS: not on the flood risk listBL1 8SU: not on the flood risk listBL1 8SW: not on the flood risk listBL1 8SY: not on the flood risk listBL1 8TA: not on the flood risk listBL1 8TB: not on the flood risk listBL1 8TE: not on the flood risk listBL1 8TF: not on the flood risk listBL1 8TG: not on the flood risk listBL1 8TJ: not on the flood risk listBL1 8TL: not on the flood risk listBL1 8TN: not on the flood risk listBL1 8TQ: not on the flood risk listBL1 8TR: not on the flood risk listBL1 8TT: not on the flood risk listBL1 8TW: not on the flood risk listBL1 8TX: not on the flood risk listBL1 8UB: not on the flood risk listBL1 8UD: not on the flood risk listBL1 8UF: not on the flood risk listBL1 8UG: not on the flood risk listBL1 8UH: not on the flood risk listBL1 8UJ: not on the flood risk listBL1 8UP: not on the flood risk listBL1 8UQ: not on the flood risk listBL1 8US: not on the flood risk listBL1 8UT: not on the flood risk listBL1 8UU: not on the flood risk listBL1 8UW: not on the flood risk listBL1 8UX: not on the flood risk listBL1 8UY: not on the flood risk listBL1 8WB: not on the flood risk listBL1 8XD: not on the flood risk listBL1 5XH: very low flood risk onlyBL1 8DT: very low flood risk onlyBL1 8TU: very low flood risk onlyBL1 8UA: very low flood risk onlyBL1 8WD: very low flood risk onlyBL1 1TY: low flood risk at worstBL1 2BY: low flood risk at worstBL1 2AS: low flood risk at worstBL1 2AX: low flood risk at worstBL1 2AZ: low flood risk at worstBL1 2BB: low flood risk at worstBL1 2PT: low flood risk at worstBL1 4AL: low flood risk at worstBL1 2PH: low flood risk at worstBL1 2PP: low flood risk at worstBL1 2QE: low flood risk at worstBL1 2QG: low flood risk at worstBL1 2RG: low flood risk at worstBL1 2RR: low flood risk at worstBL1 2TE: low flood risk at worstBL1 3AF: low flood risk at worstBL1 3LU: low flood risk at worstBL1 3LX: low flood risk at worstBL1 3LY: low flood risk at worstBL1 4AW: low flood risk at worstBL1 5BJ: low flood risk at worstBL1 5JQ: low flood risk at worstBL1 6LP: low flood risk at worstBL1 6NG: low flood risk at worstBL1 6PE: low flood risk at worstBL1 6PR: low flood risk at worstBL1 6PS: low flood risk at worstBL1 7AL: low flood risk at worstBL1 8DX: low flood risk at worstBL1 8QQ: low flood risk at worstBL1 8PL: low flood risk at worstBL1 8RT: low flood risk at worstBL1 8TS: low flood risk at worstBL1 8TY: low flood risk at worstBL1 1TZ: medium flood risk at worstBL1 2JS: medium flood risk at worstBL1 2QN: medium flood risk at worstBL1 2QQ: medium flood risk at worstBL1 2QY: medium flood risk at worstBL1 3AW: medium flood risk at worstBL1 4GS: medium flood risk at worstBL1 7NS: medium flood risk at worstBL1 1TU: high flood riskBL1 4AG: high flood riskBL1 4GT: high flood riskBL1 4LG: high flood riskBL1 4LH: high flood riskBL1 4LL: high flood riskBL1 4LN: high flood riskBL1 4LS: high flood riskBL1 4LU: high flood riskBL1 4LW: high flood riskBL1 4LX: high flood riskBL1 4LY: high flood riskBL1 4LZ: high flood riskBL1 4NA: high flood riskBL1 4NB: high flood riskBL1 4NY: high flood riskBL1 4PG: high flood riskBL1 4RD: high flood riskBL1 4RX: high flood riskBL1 4RY: high flood riskBL1 4SB: high flood riskBL1 4SG: high flood riskBL1 4SF: high flood riskBL1 4ST: high flood riskBL1 4SW: high flood riskBL1 5AA: high flood riskBL1 5BG: high flood riskBL1 5BR: high flood riskBL1 5GR: high flood riskBL1 5HP: high flood riskBL1 5HS: high flood riskBL1 6FY: high flood riskBL1 6JL: high flood riskBL1 6NH: high flood riskBL1 6ND: high flood riskBL1 6NF: high flood riskBL1 6NJ: high flood riskBL1 6NW: high flood riskBL1 6PU: high flood riskBL1 6TX: high flood riskBL1 6TY: high flood riskBL1 6TZ: high flood riskBL1 7RZ: high flood riskBL1 8DY: high flood riskBL1 8EQ: high flood riskBL1 8NJ: high flood riskBL1 8NG: high flood riskBL1 8PE: high flood riskBL1 8RY: high flood riskBL1 8TZ: high flood risk Bolton 20 postcodes at high or medium risk, outlined: this goes to BL1 4LR, the one with most homes and businesses at high risk20 postcodes at high or medium risk14 postcodes at high or medium risk, outlined: this goes to BL1 6QA, the one with most homes and businesses at high risk14 postcodes at high or medium risk12 postcodes at high or medium risk, outlined: this goes to BL1 4LG, the one with most homes and businesses at high risk12 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to BL1 6TY, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in BL1, by flood risk Of the 1,852 postcodes in BL1 that ONS places, 62 have a home or business at high risk, 8 are at medium risk at worst, 42 are at low risk at worst, 5 are at very low risk only and 1,735 are not on the Environment Agency's at-risk list. 4 groups of postcodes at high or medium risk are outlined: 20 postcodes at high or medium risk; 14 postcodes at high or medium risk; 12 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Bolton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Bolton 7 postcodes at high or medium risk, outlined: this goes to BL1 6TY, the one with most homes and businesses at high risk7 postcodes at high or medium risk
  • A home or business at high risk: 62
  • At medium risk at worst: 8
  • At low risk at worst: 42
  • At very low risk only: 5
  • Not on the at-risk list: 1,735
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,852 postcodes in BL1 that ONS places, 62 have a home or business at high risk, 8 are at medium risk at worst, 42 are at low risk at worst, 5 are at very low risk only and 1,735 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 53.5905, longitude -2.4450. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

62 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

BL1 4GT41 at high riskBL1 4LG37 at high riskBL1 6TY30 at high riskBL1 4SW29 at high riskBL1 6QA29 at high riskBL1 4LR23 at high riskBL1 4NY23 at high riskBL1 4RZ21 at high riskBL1 6NJ21 at high riskBL1 8NL21 at high riskBL1 4LN20 at high riskBL1 4SA20 at high risk

Where the postcodes at high or medium risk lie together

  • 20 postcodes at high or medium risk, outlined on the map. BL1 4LR, is the one with most homes and businesses at high risk.
  • 14 postcodes at high or medium risk, outlined on the map. BL1 6QA, is the one with most homes and businesses at high risk.
  • 12 postcodes at high or medium risk, outlined on the map. BL1 4LG, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. BL1 6TY, is the one with most homes and businesses at high risk.

What broadband can you get in BL1?

Ofcom reports on 1,769 of the 1,852 postcodes in BL1. At 1,449 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit1,449 of 1,769
Postcodes where every home can get superfast1,648 of 1,769

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is BL1 at risk of flooding?

117 of the 1,852 postcodes in BL1 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 664 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 117 of 1,852 postcodes High: 590Medium: 74Low: 441Very low: 59

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in BL1?

Homes in BL1 sold for a typical £200,000 in the 12 months to August 2026, across 585 sales, up 8.1% on the 12 months before, HM Land Registry's figures show.

£200,000 typical price, the 12 months to August 2026
£185,000 12 months to August 2025
▲ up 8.1% on the 12 months before
  • Detached £380,000 91 sales
  • Semi-detached £240,000 179 sales
  • Terraced £155,000 248 sales
  • Flat or maisonette £110,000 67 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in BL1

Pick a sector, then a postcode. A sector is the district plus the next digit.

BL1 1119 postcodesBL1 2201 postcodesBL1 3270 postcodesBL1 4208 postcodesBL1 5305 postcodesBL1 6210 postcodesBL1 7210 postcodesBL1 8282 postcodesBL1 947 postcodes
UK postcode format explained

Places in BL1

Towns and villages with postcodes in BL1, and how many each has here.

Bolton postcodes,1,821

Who covers BL1

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Bolton North East1,240
  • Bolton West549
  • Bolton South and Walkden63

Police force areas

  • Greater Manchester1,852

Next to BL1

BL0 postcode district BL2 postcode district All BL districts Bolton postcodes

"Next to" is by number: the districts before and after BL1 in the BL area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.