SL1 postcode district: Slough and around

SL1 is a postcode district in England, with 1,654 postcodes in use in 10 sectors. It has postcodes in Slough. It is split between 2 councils: Slough (1,363 postcodes) and Buckinghamshire (291).

Postcodes in use
1,654
Sectors
10
Councils
2 councils
Places
Slough

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

Every postcode in SL1, by flood risk

Map of every postcode in SL1, by flood risk Of the 1,654 postcodes in SL1 that ONS places, 117 have a home or business at high risk, 24 are at medium risk at worst, 58 are at low risk at worst, 67 are at very low risk only and 1,388 are not on the Environment Agency's at-risk list. 6 groups of postcodes at high or medium risk are outlined: 57 postcodes at high or medium risk; 25 postcodes at high or medium risk; 17 postcodes at high or medium risk; 14 postcodes at high or medium risk; 6 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Slough, Farnham Common and Farnham Royal, Stoke Poges. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M4M40A412 SL1 0AB: not on the flood risk listSL1 0SA: not on the flood risk listSL1 0SB: not on the flood risk listSL1 1AE: not on the flood risk listSL1 1AG: not on the flood risk listSL1 1AN: not on the flood risk listSL1 1AQ: not on the flood risk listSL1 1AW: not on the flood risk listSL1 1AY: not on the flood risk listSL1 1BD: not on the flood risk listSL1 1BN: not on the flood risk listSL1 1BY: not on the flood risk listSL1 1DB: not on the flood risk listSL1 1DD: not on the flood risk listSL1 1DG: not on the flood risk listSL1 1DH: not on the flood risk listSL1 1DJ: not on the flood risk listSL1 1DN: not on the flood risk listSL1 1DZ: not on the flood risk listSL1 1EL: not on the flood risk listSL1 1EP: not on the flood risk listSL1 1FG: not on the flood risk listSL1 1FQ: not on the flood risk listSL1 1GE: not on the flood risk listSL1 1GN: not on the flood risk listSL1 1GR: not on the flood risk listSL1 1HE: not on the flood risk listSL1 1HP: not on the flood risk listSL1 1HQ: not on the flood risk listSL1 1HW: not on the flood risk listSL1 1HX: not on the flood risk listSL1 1HY: not on the flood risk listSL1 1JA: not on the flood risk listSL1 1JP: not on the flood risk listSL1 1JS: not on the flood risk listSL1 1LE: not on the flood risk listSL1 1LU: not on the flood risk listSL1 1NB: not on the flood risk listSL1 1NF: not on the flood risk listSL1 1NJ: not on the flood risk listSL1 1NL: not on the flood risk listSL1 1NP: not on the flood risk listSL1 1NR: not on the flood risk listSL1 1NS: not on the flood risk listSL1 1NT: not on the flood risk listSL1 1NU: not on the flood risk listSL1 1NX: not on the flood risk listSL1 1PA: not on the flood risk listSL1 1PB: not on the flood risk listSL1 1PG: not on the flood risk listSL1 1PJ: not on the flood risk listSL1 1PP: not on the flood risk listSL1 1PR: not on the flood risk listSL1 1PS: not on the flood risk listSL1 1PU: not on the flood risk listSL1 1PW: not on the flood risk listSL1 1PX: not on the flood risk listSL1 1QA: not on the flood risk listSL1 1QH: not on the flood risk listSL1 1QJ: not on the flood risk listSL1 1QN: not on the flood risk listSL1 1QR: not on the flood risk listSL1 1QX: not on the flood risk listSL1 1RD: not on the flood risk listSL1 1RF: not on the flood risk listSL1 1RN: not on the flood risk listSL1 1RP: not on the flood risk listSL1 1RQ: not on the flood risk listSL1 1RR: not on the flood risk listSL1 1RS: not on the flood risk listSL1 1RT: not on the flood risk listSL1 1RU: not on the flood risk listSL1 1RW: not on the flood risk listSL1 1RX: not on the flood risk listSL1 1SE: not on the flood risk listSL1 1SF: not on the flood risk listSL1 1SG: not on the flood risk listSL1 1SJ: not on the flood risk listSL1 1SN: not on the flood risk listSL1 1SR: not on the flood risk listSL1 1SU: not on the flood risk listSL1 1TA: not on the flood risk listSL1 1TD: not on the flood risk listSL1 1TG: not on the flood risk listSL1 1TJ: not on the flood risk listSL1 1TS: not on the flood risk listSL1 1TX: not on the flood risk listSL1 1UA: not on the flood risk listSL1 1UD: not on the flood risk listSL1 1UH: not on the flood risk listSL1 1UL: not on the flood risk listSL1 1UN: not on the flood risk listSL1 1UR: not on the flood risk listSL1 1US: not on the flood risk listSL1 1UT: not on the flood risk listSL1 1UW: not on the flood risk listSL1 1XA: not on the flood risk listSL1 1XN: not on the flood risk listSL1 1XW: not on the flood risk listSL1 1XZ: not on the flood risk listSL1 1YW: not on the flood risk listSL1 2AA: not on the flood risk listSL1 2AB: not on the flood risk listSL1 2AE: not on the flood risk listSL1 2AF: not on the flood risk listSL1 2AG: not on the flood risk listSL1 2AH: not on the flood risk listSL1 2AL: not on the flood risk listSL1 2AP: not on the flood risk listSL1 2AR: not on the flood risk listSL1 2AS: not on the flood risk listSL1 2AT: not on the flood risk listSL1 2AU: not on the flood risk listSL1 2AX: not on the flood risk listSL1 2AZ: not on the flood risk listSL1 2BA: not on the flood risk listSL1 2BB: not on the flood risk listSL1 2BJ: not on the flood risk listSL1 2BL: not on the flood risk listSL1 2BP: not on the flood risk listSL1 2BU: not on the flood risk listSL1 2BY: not on the flood risk listSL1 2DD: not on the flood risk listSL1 2DF: not on the flood risk listSL1 2DG: not on the flood risk listSL1 2DN: not on the flood risk listSL1 2DP: not on the flood risk listSL1 2DQ: not on the flood risk listSL1 2DR: not on the flood risk listSL1 2DT: not on the flood risk listSL1 2DY: not on the flood risk listSL1 2ED: not on the flood risk listSL1 2EJ: not on the flood risk listSL1 2EL: not on the flood risk listSL1 2EP: not on the flood risk listSL1 2ER: not on the flood risk listSL1 2FA: not on the flood risk listSL1 2FD: not on the flood risk listSL1 2FE: not on the flood risk listSL1 2FF: not on the flood risk listSL1 2FR: not on the flood risk listSL1 2FT: not on the flood risk listSL1 2FY: not on the flood risk listSL1 2GD: not on the flood risk listSL1 2GZ: not on the flood risk listSL1 2HE: not on the flood risk listSL1 2HP: not on the flood risk listSL1 2HR: not on the flood risk listSL1 2HU: not on the flood risk listSL1 2HY: not on the flood risk listSL1 2JA: not on the flood risk listSL1 2JB: not on the flood risk listSL1 2JD: not on the flood risk listSL1 2JT: not on the flood risk listSL1 2JY: not on the flood risk listSL1 2JZ: not on the flood risk listSL1 2LE: not on the flood risk listSL1 2LF: not on the flood risk listSL1 2LH: not on the flood risk listSL1 2LJ: not on the flood risk listSL1 2LL: not on the flood risk listSL1 2LN: not on the flood risk listSL1 2LP: not on the flood risk listSL1 2LQ: not on the flood risk listSL1 2LR: not on the flood risk listSL1 2LS: not on the flood risk listSL1 2LT: not on the flood risk listSL1 2LW: not on the flood risk listSL1 2LY: not on the flood risk listSL1 2LZ: not on the flood risk listSL1 2NA: not on the flood risk listSL1 2ND: not on the flood risk listSL1 2NE: not on the flood risk listSL1 2NG: not on the flood risk listSL1 2NQ: not on the flood risk listSL1 2NR: not on the flood risk listSL1 2NS: not on the flood risk listSL1 2NT: not on the flood risk listSL1 2NU: not on the flood risk listSL1 2PL: not on the flood risk listSL1 2PP: not on the flood risk listSL1 2PR: not on the flood risk listSL1 2PS: not on the flood risk listSL1 2PX: not on the flood risk listSL1 2PY: not on the flood risk listSL1 2QE: not on the flood risk listSL1 2QH: not on the flood risk listSL1 2QJ: not on the flood risk listSL1 2QL: not on the flood risk listSL1 2QP: not on the flood risk listSL1 2QS: not on the flood risk listSL1 2QT: not on the flood risk listSL1 2QU: not on the flood risk listSL1 2QX: not on the flood risk listSL1 2RB: not on the flood risk listSL1 2RD: not on the flood risk listSL1 2RE: not on the flood risk listSL1 2RF: not on the flood risk listSL1 2RQ: not on the flood risk listSL1 2RW: not on the flood risk listSL1 2SH: not on the flood risk listSL1 2ST: not on the flood risk listSL1 2TA: not on the flood risk listSL1 2TX: not on the flood risk listSL1 2UD: not on the flood risk listSL1 2UJ: not on the flood risk listSL1 2UR: not on the flood risk listSL1 2UT: not on the flood risk listSL1 2UW: not on the flood risk listSL1 2WN: not on the flood risk listSL1 2XA: not on the flood risk listSL1 2XD: not on the flood risk listSL1 2XE: not on the flood risk listSL1 2XF: not on the flood risk listSL1 2XG: not on the flood risk listSL1 2XH: not on the flood risk listSL1 2XJ: not on the flood risk listSL1 2XL: not on the flood risk listSL1 2XN: not on the flood risk listSL1 2XP: not on the flood risk listSL1 2XQ: not on the flood risk listSL1 2XT: not on the flood risk listSL1 2XU: not on the flood risk listSL1 2XW: not on the flood risk listSL1 2XY: not on the flood risk listSL1 2XZ: not on the flood risk listSL1 2YA: not on the flood risk listSL1 2YD: not on the flood risk listSL1 2YF: not on the flood risk listSL1 2YG: not on the flood risk listSL1 2YH: not on the flood risk listSL1 2YJ: not on the flood risk listSL1 2YL: not on the flood risk listSL1 2YP: not on the flood risk listSL1 2YR: not on the flood risk listSL1 2YS: not on the flood risk listSL1 2YT: not on the flood risk listSL1 2YU: not on the flood risk listSL1 2YZ: not on the flood risk listSL1 3AA: not on the flood risk listSL1 3AB: not on the flood risk listSL1 3AD: not on the flood risk listSL1 3AF: not on the flood risk listSL1 3AL: not on the flood risk listSL1 3AQ: not on the flood risk listSL1 3AS: not on the flood risk listSL1 3AU: not on the flood risk listSL1 3AZ: not on the flood risk listSL1 3BD: not on the flood risk listSL1 3BE: not on the flood risk listSL1 3BH: not on the flood risk listSL1 3BJ: not on the flood risk listSL1 3BL: not on the flood risk listSL1 3BN: not on the flood risk listSL1 3BP: not on the flood risk listSL1 3BW: not on the flood risk listSL1 3BY: not on the flood risk listSL1 3DF: not on the flood risk listSL1 3DJ: not on the flood risk listSL1 3DL: not on the flood risk listSL1 3DP: not on the flood risk listSL1 3DQ: not on the flood risk listSL1 3DR: not on the flood risk listSL1 3DT: not on the flood risk listSL1 3DY: not on the flood risk listSL1 3EA: not on the flood risk listSL1 3EB: not on the flood risk listSL1 3ED: not on the flood risk listSL1 3EE: not on the flood risk listSL1 3EG: not on the flood risk listSL1 3ET: not on the flood risk listSL1 3EW: not on the flood risk listSL1 3FN: not on the flood risk listSL1 3FQ: not on the flood risk listSL1 3FU: not on the flood risk listSL1 3FW: not on the flood risk listSL1 3FX: not on the flood risk listSL1 3FY: not on the flood risk listSL1 3FZ: not on the flood risk listSL1 3GA: not on the flood risk listSL1 3GD: not on the flood risk listSL1 3GE: not on the flood risk listSL1 3GF: not on the flood risk listSL1 3GH: not on the flood risk listSL1 3GL: not on the flood risk listSL1 3GN: not on the flood risk listSL1 3GP: not on the flood risk listSL1 3GQ: not on the flood risk listSL1 3GR: not on the flood risk listSL1 3GU: not on the flood risk listSL1 3GW: not on the flood risk listSL1 3HF: not on the flood risk listSL1 3HH: not on the flood risk listSL1 3HJ: not on the flood risk listSL1 3HP: not on the flood risk listSL1 3HQ: not on the flood risk listSL1 3HR: not on the flood risk listSL1 3HW: not on the flood risk listSL1 3HX: not on the flood risk listSL1 3HZ: not on the flood risk listSL1 3JB: not on the flood risk listSL1 3JD: not on the flood risk listSL1 3JW: not on the flood risk listSL1 3LN: not on the flood risk listSL1 3LS: not on the flood risk listSL1 3LW: not on the flood risk listSL1 3LX: not on the flood risk listSL1 3LY: not on the flood risk listSL1 3ND: not on the flood risk listSL1 3NE: not on the flood risk listSL1 3NL: not on the flood risk listSL1 3NT: not on the flood risk listSL1 3NU: not on the flood risk listSL1 3NX: not on the flood risk listSL1 3NY: not on the flood risk listSL1 3NZ: not on the flood risk listSL1 3PA: not on the flood risk listSL1 3PD: not on the flood risk listSL1 3PE: not on the flood risk listSL1 3PG: not on the flood risk listSL1 3PQ: not on the flood risk listSL1 3PS: not on the flood risk listSL1 3PU: not on the flood risk listSL1 3QA: not on the flood risk listSL1 3QB: not on the flood risk listSL1 3QE: not on the flood risk listSL1 3QG: not on the flood risk listSL1 3QH: not on the flood risk listSL1 3QL: not on the flood risk listSL1 3QP: not on the flood risk listSL1 3QR: not on the flood risk listSL1 3QT: not on the flood risk listSL1 3QU: not on the flood risk listSL1 3QX: not on the flood risk listSL1 3QY: not on the flood risk listSL1 3QZ: not on the flood risk listSL1 3RB: not on the flood risk listSL1 3RE: not on the flood risk listSL1 3RH: not on the flood risk listSL1 3RJ: not on the flood risk listSL1 3RL: not on the flood risk listSL1 3RN: not on the flood risk listSL1 3RR: not on the flood risk listSL1 3RS: not on the flood risk listSL1 3RW: not on the flood risk listSL1 3SA: not on the flood risk listSL1 3SF: not on the flood risk listSL1 3SG: not on the flood risk listSL1 3SH: not on the flood risk listSL1 3SL: not on the flood risk listSL1 3SN: not on the flood risk listSL1 3SQ: not on the flood risk listSL1 3SS: not on the flood risk listSL1 3ST: not on the flood risk listSL1 3SU: not on the flood risk listSL1 3SW: not on the flood risk listSL1 3SX: not on the flood risk listSL1 3SY: not on the flood risk listSL1 3TA: not on the flood risk listSL1 3TD: not on the flood risk listSL1 3TE: not on the flood risk listSL1 3TF: not on the flood risk listSL1 3TG: not on the flood risk listSL1 3TH: not on the flood risk listSL1 3TJ: not on the flood risk listSL1 3TN: not on the flood risk listSL1 3TR: not on the flood risk listSL1 3TS: not on the flood risk listSL1 3TU: not on the flood risk listSL1 3TW: not on the flood risk listSL1 3UF: not on the flood risk listSL1 3UH: not on the flood risk listSL1 3UR: not on the flood risk listSL1 3UT: not on the flood risk listSL1 3UU: not on the flood risk listSL1 3UW: not on the flood risk listSL1 3UX: not on the flood risk listSL1 3WE: not on the flood risk listSL1 3XF: not on the flood risk listSL1 3XG: not on the flood risk listSL1 3XJ: not on the flood risk listSL1 3XL: not on the flood risk listSL1 3XP: not on the flood risk listSL1 3XQ: not on the flood risk listSL1 3XX: not on the flood risk listSL1 3XY: not on the flood risk listSL1 4AA: not on the flood risk listSL1 4AG: not on the flood risk listSL1 4AN: not on the flood risk listSL1 4AQ: not on the flood risk listSL1 4AX: not on the flood risk listSL1 4AY: not on the flood risk listSL1 4BD: not on the flood risk listSL1 4BE: not on the flood risk listSL1 4BG: not on the flood risk listSL1 4BH: not on the flood risk listSL1 4DE: not on the flood risk listSL1 4DX: not on the flood risk listSL1 4ED: not on the flood risk listSL1 4EH: not on the flood risk listSL1 4EP: not on the flood risk listSL1 4EQ: not on the flood risk listSL1 4ES: not on the flood risk listSL1 4ET: not on the flood risk listSL1 4EU: not on the flood risk listSL1 4HB: not on the flood risk listSL1 4HE: not on the flood risk listSL1 4HF: not on the flood risk listSL1 4HL: not on the flood risk listSL1 4HR: not on the flood risk listSL1 4JA: not on the flood risk listSL1 4JB: not on the flood risk listSL1 4JG: not on the flood risk listSL1 4JU: not on the flood risk listSL1 4JW: not on the flood risk listSL1 4LA: not on the flood risk listSL1 4LG: not on the flood risk listSL1 4LH: not on the flood risk listSL1 4LN: not on the flood risk listSL1 4LR: not on the flood risk listSL1 4LU: not on the flood risk listSL1 4LZ: not on the flood risk listSL1 4NB: not on the flood risk listSL1 4NH: not on the flood risk listSL1 4NJ: not on the flood risk listSL1 4NL: not on the flood risk listSL1 4PF: not on the flood risk listSL1 4PG: not on the flood risk listSL1 4PH: not on the flood risk listSL1 4PJ: not on the flood risk listSL1 4PL: not on the flood risk listSL1 4PN: not on the flood risk listSL1 4PY: not on the flood risk listSL1 4QA: not on the flood risk listSL1 4QT: not on the flood risk listSL1 4QU: not on the flood risk listSL1 4RA: not on the flood risk listSL1 4RF: not on the flood risk listSL1 4RY: not on the flood risk listSL1 4SH: not on the flood risk listSL1 4SP: not on the flood risk listSL1 4SS: not on the flood risk listSL1 4ST: not on the flood risk listSL1 4SZ: not on the flood risk listSL1 4TJ: not on the flood risk listSL1 4TN: not on the flood risk listSL1 4TQ: not on the flood risk listSL1 4TT: not on the flood risk listSL1 4TU: not on the flood risk listSL1 4UE: not on the flood risk listSL1 4UF: not on the flood risk listSL1 4UN: not on the flood risk listSL1 4XA: not on the flood risk listSL1 4XB: not on the flood risk listSL1 4XE: not on the flood risk listSL1 4XL: not on the flood risk listSL1 4XQ: not on the flood risk listSL1 4XS: not on the flood risk listSL1 4XU: not on the flood risk listSL1 4XX: not on the flood risk listSL1 5AA: not on the flood risk listSL1 5AD: not on the flood risk listSL1 5AE: not on the flood risk listSL1 5AG: not on the flood risk listSL1 5AH: not on the flood risk listSL1 5AL: not on the flood risk listSL1 5BA: not on the flood risk listSL1 5BB: not on the flood risk listSL1 5BH: not on the flood risk listSL1 5BL: not on the flood risk listSL1 5BN: not on the flood risk listSL1 5BP: not on the flood risk listSL1 5BQ: not on the flood risk listSL1 5BS: not on the flood risk listSL1 5BU: not on the flood risk listSL1 5BW: not on the flood risk listSL1 5BX: not on the flood risk listSL1 5BY: not on the flood risk listSL1 5BZ: not on the flood risk listSL1 5DA: not on the flood risk listSL1 5DB: not on the flood risk listSL1 5DD: not on the flood risk listSL1 5DE: not on the flood risk listSL1 5DG: not on the flood risk listSL1 5EF: not on the flood risk listSL1 5EJ: not on the flood risk listSL1 5EP: not on the flood risk listSL1 5EQ: not on the flood risk listSL1 5FE: not on the flood risk listSL1 5FG: not on the flood risk listSL1 5FQ: not on the flood risk listSL1 5FR: not on the flood risk listSL1 5FS: not on the flood risk listSL1 5FT: not on the flood risk listSL1 5FW: not on the flood risk listSL1 5FX: not on the flood risk listSL1 5FZ: not on the flood risk listSL1 5GA: not on the flood risk listSL1 5HA: not on the flood risk listSL1 5HB: not on the flood risk listSL1 5HD: not on the flood risk listSL1 5HE: not on the flood risk listSL1 5HG: not on the flood risk listSL1 5HP: not on the flood risk listSL1 5HQ: not on the flood risk listSL1 5HS: not on the flood risk listSL1 5HT: not on the flood risk listSL1 5HX: not on the flood risk listSL1 5JA: not on the flood risk listSL1 5JH: not on the flood risk listSL1 5JL: not on the flood risk listSL1 5JP: not on the flood risk listSL1 5JQ: not on the flood risk listSL1 5JR: not on the flood risk listSL1 5JT: not on the flood risk listSL1 5JU: not on the flood risk listSL1 5JX: not on the flood risk listSL1 5JZ: not on the flood risk listSL1 5LA: not on the flood risk listSL1 5LB: not on the flood risk listSL1 5LE: not on the flood risk listSL1 5LF: not on the flood risk listSL1 5LG: not on the flood risk listSL1 5LH: not on the flood risk listSL1 5LJ: not on the flood risk listSL1 5LL: not on the flood risk listSL1 5LN: not on the flood risk listSL1 5LP: not on the flood risk listSL1 5LR: not on the flood risk listSL1 5LS: not on the flood risk listSL1 5LU: not on the flood risk listSL1 5NB: not on the flood risk listSL1 5ND: not on the flood risk listSL1 5NH: not on the flood risk listSL1 5NJ: not on the flood risk listSL1 5NL: not on the flood risk listSL1 5NN: not on the flood risk listSL1 5NP: not on the flood risk listSL1 5NR: not on the flood risk listSL1 5NT: not on the flood risk listSL1 5NX: not on the flood risk listSL1 5PA: not on the flood risk listSL1 5PB: not on the flood risk listSL1 5PD: not on the flood risk listSL1 5PE: not on the flood risk listSL1 5PG: not on the flood risk listSL1 5PH: not on the flood risk listSL1 5PJ: not on the flood risk listSL1 5PP: not on the flood risk listSL1 5PR: not on the flood risk listSL1 5PS: not on the flood risk listSL1 5QE: not on the flood risk listSL1 5QG: not on the flood risk listSL1 5QL: not on the flood risk listSL1 5QS: not on the flood risk listSL1 5QT: not on the flood risk listSL1 5QU: not on the flood risk listSL1 5QY: not on the flood risk listSL1 5QZ: not on the flood risk listSL1 5RA: not on the flood risk listSL1 5RB: not on the flood risk listSL1 5RD: not on the flood risk listSL1 5RE: not on the flood risk listSL1 5RG: not on the flood risk listSL1 5RQ: not on the flood risk listSL1 5SP: not on the flood risk listSL1 5SR: not on the flood risk listSL1 5ST: not on the flood risk listSL1 5SU: not on the flood risk listSL1 5SW: not on the flood risk listSL1 5SX: not on the flood risk listSL1 5SY: not on the flood risk listSL1 5TE: not on the flood risk listSL1 5TG: not on the flood risk listSL1 5TH: not on the flood risk listSL1 5TQ: not on the flood risk listSL1 5TT: not on the flood risk listSL1 5TX: not on the flood risk listSL1 5UA: not on the flood risk listSL1 5UB: not on the flood risk listSL1 5UG: not on the flood risk listSL1 5UH: not on the flood risk listSL1 5UJ: not on the flood risk listSL1 5UN: not on the flood risk listSL1 5UU: not on the flood risk listSL1 6AB: not on the flood risk listSL1 6AE: not on the flood risk listSL1 6AF: not on the flood risk listSL1 6AG: not on the flood risk listSL1 6AH: not on the flood risk listSL1 6AJ: not on the flood risk listSL1 6AL: not on the flood risk listSL1 6AQ: not on the flood risk listSL1 6AR: not on the flood risk listSL1 6AS: not on the flood risk listSL1 6AT: not on the flood risk listSL1 6AU: not on the flood risk listSL1 6AW: not on the flood risk listSL1 6AX: not on the flood risk listSL1 6BB: not on the flood risk listSL1 6BD: not on the flood risk listSL1 6BW: not on the flood risk listSL1 6DA: not on the flood risk listSL1 6DN: not on the flood risk listSL1 6DP: not on the flood risk listSL1 6DQ: not on the flood risk listSL1 6DR: not on the flood risk listSL1 6DS: not on the flood risk listSL1 6DU: not on the flood risk listSL1 6DW: not on the flood risk listSL1 6DY: not on the flood risk listSL1 6EA: not on the flood risk listSL1 6EB: not on the flood risk listSL1 6ED: not on the flood risk listSL1 6EE: not on the flood risk listSL1 6EG: not on the flood risk listSL1 6EJ: not on the flood risk listSL1 6EL: not on the flood risk listSL1 6EN: not on the flood risk listSL1 6EP: not on the flood risk listSL1 6ER: not on the flood risk listSL1 6ES: not on the flood risk listSL1 6ET: not on the flood risk listSL1 6EU: not on the flood risk listSL1 6EY: not on the flood risk listSL1 6EZ: not on the flood risk listSL1 6FB: not on the flood risk listSL1 6FD: not on the flood risk listSL1 6FE: not on the flood risk listSL1 6HB: not on the flood risk listSL1 6HD: not on the flood risk listSL1 6HE: not on the flood risk listSL1 6HF: not on the flood risk listSL1 6HH: not on the flood risk listSL1 6HJ: not on the flood risk listSL1 6HP: not on the flood risk listSL1 6HQ: not on the flood risk listSL1 6HT: not on the flood risk listSL1 6HW: not on the flood risk listSL1 6JB: not on the flood risk listSL1 6JD: not on the flood risk listSL1 6JE: not on the flood risk listSL1 6JJ: not on the flood risk listSL1 6JL: not on the flood risk listSL1 6JN: not on the flood risk listSL1 6JR: not on the flood risk listSL1 6JT: not on the flood risk listSL1 6JU: not on the flood risk listSL1 6JX: not on the flood risk listSL1 6JY: not on the flood risk listSL1 6LA: not on the flood risk listSL1 6LD: not on the flood risk listSL1 6LE: not on the flood risk listSL1 6LG: not on the flood risk listSL1 6LS: not on the flood risk listSL1 6LY: not on the flood risk listSL1 6LZ: not on the flood risk listSL1 6NA: not on the flood risk listSL1 6ND: not on the flood risk listSL1 6NE: not on the flood risk listSL1 6NF: not on the flood risk listSL1 6NG: not on the flood risk listSL1 6NH: not on the flood risk listSL1 6NJ: not on the flood risk listSL1 6NL: not on the flood risk listSL1 6NW: not on the flood risk listSL1 6PA: not on the flood risk listSL1 6PB: not on the flood risk listSL1 6PD: not on the flood risk listSL1 6PE: not on the flood risk listSL1 6PF: not on the flood risk listSL1 6PP: not on the flood risk listSL1 6PQ: not on the flood risk listSL1 7AA: not on the flood risk listSL1 7AB: not on the flood risk listSL1 7AD: not on the flood risk listSL1 7AE: not on the flood risk listSL1 7AF: not on the flood risk listSL1 7AG: not on the flood risk listSL1 7AH: not on the flood risk listSL1 7AL: not on the flood risk listSL1 7AS: not on the flood risk listSL1 7AU: not on the flood risk listSL1 7AW: not on the flood risk listSL1 7AY: not on the flood risk listSL1 7BB: not on the flood risk listSL1 7BD: not on the flood risk listSL1 7BE: not on the flood risk listSL1 7BF: not on the flood risk listSL1 7BG: not on the flood risk listSL1 7BH: not on the flood risk listSL1 7BL: not on the flood risk listSL1 7BN: not on the flood risk listSL1 7BQ: not on the flood risk listSL1 7DA: not on the flood risk listSL1 7DB: not on the flood risk listSL1 7DD: not on the flood risk listSL1 7DE: not on the flood risk listSL1 7DF: not on the flood risk listSL1 7DH: not on the flood risk listSL1 7DJ: not on the flood risk listSL1 7DL: not on the flood risk listSL1 7DN: not on the flood risk listSL1 7DP: not on the flood risk listSL1 7DQ: not on the flood risk listSL1 7DR: not on the flood risk listSL1 7DS: not on the flood risk listSL1 7DT: not on the flood risk listSL1 7DU: not on the flood risk listSL1 7DW: not on the flood risk listSL1 7DX: not on the flood risk listSL1 7DY: not on the flood risk listSL1 7DZ: not on the flood risk listSL1 7EA: not on the flood risk listSL1 7EB: not on the flood risk listSL1 7ED: not on the flood risk listSL1 7EE: not on the flood risk listSL1 7EF: not on the flood risk listSL1 7EG: not on the flood risk listSL1 7EH: not on the flood risk listSL1 7EL: not on the flood risk listSL1 7EP: not on the flood risk listSL1 7ER: not on the flood risk listSL1 7ES: not on the flood risk listSL1 7ET: not on the flood risk listSL1 7EU: not on the flood risk listSL1 7HA: not on the flood risk listSL1 7HB: not on the flood risk listSL1 7HD: not on the flood risk listSL1 7HE: not on the flood risk listSL1 7HH: not on the flood risk listSL1 7HJ: not on the flood risk listSL1 7HN: not on the flood risk listSL1 7HQ: not on the flood risk listSL1 7HR: not on the flood risk listSL1 7HS: not on the flood risk listSL1 7HU: not on the flood risk listSL1 7HX: not on the flood risk listSL1 7JA: not on the flood risk listSL1 7JB: not on the flood risk listSL1 7JD: not on the flood risk listSL1 7JH: not on the flood risk listSL1 7JL: not on the flood risk listSL1 7JN: not on the flood risk listSL1 7JT: not on the flood risk listSL1 7JZ: not on the flood risk listSL1 7LD: not on the flood risk listSL1 7LP: not on the flood risk listSL1 7LW: not on the flood risk listSL1 7LX: not on the flood risk listSL1 7NA: not on the flood risk listSL1 7NB: not on the flood risk listSL1 7NG: not on the flood risk listSL1 7NJ: not on the flood risk listSL1 7NL: not on the flood risk listSL1 7NN: not on the flood risk listSL1 7NP: not on the flood risk listSL1 7NQ: not on the flood risk listSL1 7NU: not on the flood risk listSL1 7NW: not on the flood risk listSL1 7NX: not on the flood risk listSL1 7NZ: not on the flood risk listSL1 7PA: not on the flood risk listSL1 7PE: not on the flood risk listSL1 8AA: not on the flood risk listSL1 8AB: not on the flood risk listSL1 8AD: not on the flood risk listSL1 8AF: not on the flood risk listSL1 8AG: not on the flood risk listSL1 8AJ: not on the flood risk listSL1 8AL: not on the flood risk listSL1 8AN: not on the flood risk listSL1 8AQ: not on the flood risk listSL1 8AR: not on the flood risk listSL1 8AS: not on the flood risk listSL1 8AT: not on the flood risk listSL1 8AU: not on the flood risk listSL1 8AW: not on the flood risk listSL1 8AX: not on the flood risk listSL1 8AY: not on the flood risk listSL1 8AZ: not on the flood risk listSL1 8BA: not on the flood risk listSL1 8BD: not on the flood risk listSL1 8BE: not on the flood risk listSL1 8BF: not on the flood risk listSL1 8BQ: not on the flood risk listSL1 8BS: not on the flood risk listSL1 8BT: not on the flood risk listSL1 8BW: not on the flood risk listSL1 8BX: not on the flood risk listSL1 8BY: not on the flood risk listSL1 8BZ: not on the flood risk listSL1 8DA: not on the flood risk listSL1 8DD: not on the flood risk listSL1 8DE: not on the flood risk listSL1 8DF: not on the flood risk listSL1 8DG: not on the flood risk listSL1 8DH: not on the flood risk listSL1 8DL: not on the flood risk listSL1 8DN: not on the flood risk listSL1 8DP: not on the flood risk listSL1 8DR: not on the flood risk listSL1 8DS: not on the flood risk listSL1 8DT: not on the flood risk listSL1 8DU: not on the flood risk listSL1 8DW: not on the flood risk listSL1 8DX: not on the flood risk listSL1 8DY: not on the flood risk listSL1 8DZ: not on the flood risk listSL1 8EA: not on the flood risk listSL1 8EB: not on the flood risk listSL1 8ED: not on the flood risk listSL1 8EE: not on the flood risk listSL1 8EG: not on the flood risk listSL1 8EH: not on the flood risk listSL1 8EJ: not on the flood risk listSL1 8EQ: not on the flood risk listSL1 8ET: not on the flood risk listSL1 8FA: not on the flood risk listSL1 8FH: not on the flood risk listSL1 8FJ: not on the flood risk listSL1 8FL: not on the flood risk listSL1 8HB: not on the flood risk listSL1 8HD: not on the flood risk listSL1 8HJ: not on the flood risk listSL1 8HL: not on the flood risk listSL1 8HN: not on the flood risk listSL1 8HP: not on the flood risk listSL1 8HQ: not on the flood risk listSL1 8HR: not on the flood risk listSL1 8HS: not on the flood risk listSL1 8HT: not on the flood risk listSL1 8HW: not on the flood risk listSL1 8JE: not on the flood risk listSL1 8JF: not on the flood risk listSL1 8JG: not on the flood risk listSL1 8JH: not on the flood risk listSL1 8JJ: not on the flood risk listSL1 8JN: not on the flood risk listSL1 8JP: not on the flood risk listSL1 8JQ: not on the flood risk listSL1 8JR: not on the flood risk listSL1 8JT: not on the flood risk listSL1 8JU: not on the flood risk listSL1 8JX: not on the flood risk listSL1 8JZ: not on the flood risk listSL1 8LA: not on the flood risk listSL1 8LB: not on the flood risk listSL1 8LD: not on the flood risk listSL1 8LE: not on the flood risk listSL1 8LF: not on the flood risk listSL1 8LJ: not on the flood risk listSL1 8LN: not on the flood risk listSL1 8LP: not on the flood risk listSL1 8LQ: not on the flood risk listSL1 8LR: not on the flood risk listSL1 8LS: not on the flood risk listSL1 8LT: not on the flood risk listSL1 8LW: not on the flood risk listSL1 8NB: not on the flood risk listSL1 8ND: not on the flood risk listSL1 8NE: not on the flood risk listSL1 8NF: not on the flood risk listSL1 8NH: not on the flood risk listSL1 8NJ: not on the flood risk listSL1 8NN: not on the flood risk listSL1 8NP: not on the flood risk listSL1 8NR: not on the flood risk listSL1 8NS: not on the flood risk listSL1 8NT: not on the flood risk listSL1 8NU: not on the flood risk listSL1 8NX: not on the flood risk listSL1 8NY: not on the flood risk listSL1 8NZ: not on the flood risk listSL1 8PD: not on the flood risk listSL1 8PE: not on the flood risk listSL1 8PF: not on the flood risk listSL1 8PG: not on the flood risk listSL1 8PH: not on the flood risk listSL1 8PJ: not on the flood risk listSL1 8PL: not on the flood risk listSL1 8PN: not on the flood risk listSL1 8PP: not on the flood risk listSL1 8PQ: not on the flood risk listSL1 8PR: not on the flood risk listSL1 8PS: not on the flood risk listSL1 8PT: not on the flood risk listSL1 8PW: not on the flood risk listSL1 8PX: not on the flood risk listSL1 8PY: not on the flood risk listSL1 8PZ: not on the flood risk listSL1 8QA: not on the flood risk listSL1 8QB: not on the flood risk listSL1 8QD: not on the flood risk listSL1 8QE: not on the flood risk listSL1 8QG: not on the flood risk listSL1 9AN: not on the flood risk listSL1 9AP: not on the flood risk listSL1 9AS: not on the flood risk listSL1 9DD: not on the flood risk listSL1 9DT: not on the flood risk listSL1 9DU: not on the flood risk listSL1 9DX: not on the flood risk listSL1 9JB: not on the flood risk listSL1 9LA: not on the flood risk listSL1 2DA: very low flood risk onlySL1 2DH: very low flood risk onlySL1 2DL: very low flood risk onlySL1 2DU: very low flood risk onlySL1 2JE: very low flood risk onlySL1 2JH: very low flood risk onlySL1 2JN: very low flood risk onlySL1 2JW: very low flood risk onlySL1 2SU: very low flood risk onlySL1 2TE: very low flood risk onlySL1 2TF: very low flood risk onlySL1 2TG: very low flood risk onlySL1 2TH: very low flood risk onlySL1 2TJ: very low flood risk onlySL1 2TN: very low flood risk onlySL1 2TT: very low flood risk onlySL1 2TU: very low flood risk onlySL1 2TY: very low flood risk onlySL1 2TZ: very low flood risk onlySL1 2UA: very low flood risk onlySL1 2UX: very low flood risk onlySL1 2YE: very low flood risk onlySL1 4NN: very low flood risk onlySL1 5AZ: very low flood risk onlySL1 5TW: very low flood risk onlySL1 9AA: very low flood risk onlySL1 9AB: very low flood risk onlySL1 9AQ: very low flood risk onlySL1 9AJ: very low flood risk onlySL1 9BA: very low flood risk onlySL1 9BB: very low flood risk onlySL1 9BD: very low flood risk onlySL1 9BE: very low flood risk onlySL1 9BG: very low flood risk onlySL1 9BN: very low flood risk onlySL1 9BW: very low flood risk onlySL1 9DA: very low flood risk onlySL1 9DY: very low flood risk onlySL1 9DZ: very low flood risk onlySL1 9EB: very low flood risk onlySL1 9HA: very low flood risk onlySL1 9HD: very low flood risk onlySL1 9HE: very low flood risk onlySL1 9HJ: very low flood risk onlySL1 9HW: very low flood risk onlySL1 9JF: very low flood risk onlySL1 9JX: very low flood risk onlySL1 9JY: very low flood risk onlySL1 9JZ: very low flood risk onlySL1 9LD: very low flood risk onlySL1 1NN: low flood risk at worstSL1 2DE: low flood risk at worstSL1 2JJ: low flood risk at worstSL1 2JP: low flood risk at worstSL1 2PN: low flood risk at worstSL1 2PE: low flood risk at worstSL1 2QB: low flood risk at worstSL1 2SA: low flood risk at worstSL1 2SE: low flood risk at worstSL1 2SF: low flood risk at worstSL1 2SX: low flood risk at worstSL1 2SY: low flood risk at worstSL1 2SZ: low flood risk at worstSL1 2TL: low flood risk at worstSL1 2TR: low flood risk at worstSL1 2TS: low flood risk at worstSL1 2TW: low flood risk at worstSL1 3BU: low flood risk at worstSL1 3LJ: low flood risk at worstSL1 5DW: low flood risk at worstSL1 5EN: low flood risk at worstSL1 5JD: low flood risk at worstSL1 5LD: low flood risk at worstSL1 5LY: low flood risk at worstSL1 5LZ: low flood risk at worstSL1 5NA: low flood risk at worstSL1 5TF: low flood risk at worstSL1 5TS: low flood risk at worstSL1 5UL: low flood risk at worstSL1 6DX: low flood risk at worstSL1 6LB: low flood risk at worstSL1 6LL: low flood risk at worstSL1 7AP: low flood risk at worstSL1 7NF: low flood risk at worstSL1 7PH: low flood risk at worstSL1 7PL: low flood risk at worstSL1 7PN: low flood risk at worstSL1 7PP: low flood risk at worstSL1 9DE: low flood risk at worstSL1 9DJ: low flood risk at worstSL1 9DN: low flood risk at worstSL1 9DW: low flood risk at worstSL1 9HN: low flood risk at worstSL1 9JA: low flood risk at worstSL1 2NN: medium flood risk at worstSL1 2NP: medium flood risk at worstSL1 2SB: medium flood risk at worstSL1 2SD: medium flood risk at worstSL1 2SL: medium flood risk at worstSL1 3BG: medium flood risk at worstSL1 3HS: medium flood risk at worstSL1 3JU: medium flood risk at worstSL1 3SR: medium flood risk at worstSL1 5AW: medium flood risk at worstSL1 5DF: medium flood risk at worstSL1 5FD: medium flood risk at worstSL1 5FB: medium flood risk at worstSL1 5FL: medium flood risk at worstSL1 5NG: medium flood risk at worstSL1 5TP: medium flood risk at worstSL1 5TR: medium flood risk at worstSL1 5UP: medium flood risk at worstSL1 6LP: medium flood risk at worstSL1 9DB: medium flood risk at worstSL1 2ES: high flood riskSL1 2JG: high flood riskSL1 2NJ: high flood riskSL1 2NL: high flood riskSL1 2PH: high flood riskSL1 2QD: high flood riskSL1 2SN: high flood riskSL1 2SP: high flood riskSL1 2SQ: high flood riskSL1 2SR: high flood riskSL1 3AH: high flood riskSL1 3AN: high flood riskSL1 3AW: high flood riskSL1 3AY: high flood riskSL1 3EH: high flood riskSL1 3JQ: high flood riskSL1 3EN: high flood riskSL1 3ER: high flood riskSL1 3ES: high flood riskSL1 3HU: high flood riskSL1 3EY: high flood riskSL1 3HD: high flood riskSL1 3HE: high flood riskSL1 3HL: high flood riskSL1 3HN: high flood riskSL1 3HT: high flood riskSL1 3JE: high flood riskSL1 3JF: high flood riskSL1 3JH: high flood riskSL1 3JJ: high flood riskSL1 3JN: high flood riskSL1 3JP: high flood riskSL1 3JS: high flood riskSL1 3JY: high flood riskSL1 3JZ: high flood riskSL1 3LA: high flood riskSL1 3LB: high flood riskSL1 3LF: high flood riskSL1 3LG: high flood riskSL1 3LH: high flood riskSL1 3LL: high flood riskSL1 3LQ: high flood riskSL1 3NA: high flood riskSL1 3NG: high flood riskSL1 3NH: high flood riskSL1 3NJ: high flood riskSL1 3NQ: high flood riskSL1 3PB: high flood riskSL1 3PJ: high flood riskSL1 3PY: high flood riskSL1 3XU: high flood riskSL1 3XZ: high flood riskSL1 4LP: high flood riskSL1 5AF: high flood riskSL1 5AQ: high flood riskSL1 5AX: high flood riskSL1 5DJ: high flood riskSL1 5DN: high flood riskSL1 5DP: high flood riskSL1 5DQ: high flood riskSL1 5DS: high flood riskSL1 5DT: high flood riskSL1 5DU: high flood riskSL1 5DX: high flood riskSL1 5DY: high flood riskSL1 5DZ: high flood riskSL1 5EA: high flood riskSL1 5EB: high flood riskSL1 5ED: high flood riskSL1 5EE: high flood riskSL1 5ET: high flood riskSL1 5ER: high flood riskSL1 5ES: high flood riskSL1 5EU: high flood riskSL1 5JF: high flood riskSL1 5EX: high flood riskSL1 5EZ: high flood riskSL1 5FJ: high flood riskSL1 5FY: high flood riskSL1 5HJ: high flood riskSL1 5HN: high flood riskSL1 5JB: high flood riskSL1 5JE: high flood riskSL1 5NQ: high flood riskSL1 5QA: high flood riskSL1 5QJ: high flood riskSL1 5TJ: high flood riskSL1 5TD: high flood riskSL1 5TY: high flood riskSL1 5TZ: high flood riskSL1 5UF: high flood riskSL1 5US: high flood riskSL1 5UW: high flood riskSL1 6DT: high flood riskSL1 6FA: high flood riskSL1 6JA: high flood riskSL1 6LH: high flood riskSL1 6LJ: high flood riskSL1 7ND: high flood riskSL1 7NE: high flood riskSL1 7NH: high flood riskSL1 9EA: high flood risk SloughFarnham Common and Farnham RoyalStoke Poges 57 postcodes at high or medium risk, outlined: this goes to SL1 5JE, the one with most homes and businesses at high risk57 postcodes at high or medium risk25 postcodes at high or medium risk, outlined: this goes to SL1 3JY, the one with most homes and businesses at high risk25 postcodes at high or medium risk17 postcodes at high or medium risk, outlined: this goes to SL1 2JG, the one with most homes and businesses at high risk17 postcodes at high or medium risk14 postcodes at high or medium risk, outlined: this goes to SL1 3LF, the one with most homes and businesses at high risk14 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to SL1 7ND, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in SL1, by flood risk Of the 1,654 postcodes in SL1 that ONS places, 117 have a home or business at high risk, 24 are at medium risk at worst, 58 are at low risk at worst, 67 are at very low risk only and 1,388 are not on the Environment Agency's at-risk list. 6 groups of postcodes at high or medium risk are outlined: 57 postcodes at high or medium risk; 25 postcodes at high or medium risk; 17 postcodes at high or medium risk; 14 postcodes at high or medium risk; 6 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Slough, Stoke Poges. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A355M4M40 SloughStoke Poges
  • A home or business at high risk: 117
  • At medium risk at worst: 24
  • At low risk at worst: 58
  • At very low risk only: 67
  • Not on the at-risk list: 1,388
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,654 postcodes in SL1 that ONS places, 117 have a home or business at high risk, 24 are at medium risk at worst, 58 are at low risk at worst, 67 are at very low risk only and 1,388 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 51.5178, longitude -0.6222. 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

117 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.

SL1 3LF42 at high riskSL1 5JE32 at high riskSL1 5TD30 at high riskSL1 6LJ23 at high riskSL1 3JE22 at high riskSL1 3EJ21 at high riskSL1 5EG20 at high riskSL1 5QJ20 at high riskSL1 2JG19 at high riskSL1 5EE18 at high riskSL1 5HJ18 at high riskSL1 3JY17 at high risk

Where the postcodes at high or medium risk lie together

  • 57 postcodes at high or medium risk, outlined on the map. SL1 5JE, is the one with most homes and businesses at high risk.
  • 25 postcodes at high or medium risk, outlined on the map. SL1 3JY, is the one with most homes and businesses at high risk.
  • 17 postcodes at high or medium risk, outlined on the map. SL1 2JG, is the one with most homes and businesses at high risk.
  • 14 postcodes at high or medium risk, outlined on the map. SL1 3LF, is the one with most homes and businesses at high risk.
  • 6 postcodes at high or medium risk, outlined on the map. SL1 3AN, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. SL1 7ND, is the one with most homes and businesses at high risk.

What broadband can you get in SL1?

Ofcom reports on 1,497 of the 1,654 postcodes in SL1. At 1,298 of them every home and business can get gigabit broadband, and at 8 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit1,298 of 1,497
Postcodes where every home can get superfast1,430 of 1,497
Postcodes where some cannot get decent broadband8 of 1,497

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 SL1 at risk of flooding?

266 of the 1,654 postcodes in SL1 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 1,165 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 266 of 1,654 postcodes High: 851Medium: 314Low: 1,057Very low: 1,329

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 SL1?

Homes in SL1 sold for a typical £395,000 in the 12 months to August 2026, across 391 sales, down 0.2% on the 12 months before, HM Land Registry's figures show.

£395,000 typical price, the 12 months to August 2026
12 months to August 2025
£395,931
12 months to August 2026
£395,000

▼ down 0.2% on the 12 months before

Detached£670,000 57 sales
Semi-detached£455,000 111 sales
Terraced£395,000 108 sales
Flat or maisonette£220,000 115 sales

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 SL1

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

SL1 0104 postcodesSL1 1182 postcodesSL1 2287 postcodesSL1 3264 postcodesSL1 498 postcodesSL1 5250 postcodesSL1 6123 postcodesSL1 7127 postcodesSL1 8162 postcodesSL1 957 postcodes
UK postcode format explained

Places in SL1

Towns and villages with postcodes in SL1, and how many each has here.

Slough postcodes,1,601

Who covers SL1

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

  • Slough1,363
  • Beaconsfield291

Police force areas

  • Thames Valley1,654

Next to SL1

SL0 postcode district SL2 postcode district All SL districts Slough postcodes

"Next to" is by number: the districts before and after SL1 in the SL area.

Check a postcode

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