SN15 postcode district: Chippenham and around, Wiltshire

SN15 is a postcode district in England, with 1,316 postcodes in use in 6 sectors. It has postcodes in Chippenham and Lyneham. Its council is Wiltshire.

Postcodes in use
1,316
Sectors
6
Council
Wiltshire
Places
2 places

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

Every postcode in SN15, by flood risk

Map of every postcode in SN15, by flood risk Of the 1,316 postcodes in SN15 that ONS places, 38 have a home or business at high risk, 19 are at medium risk at worst, 44 are at low risk at worst and 1,215 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Chippenham, Calne, Melksham, Royal Wootton Bassett, Lyneham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A4A429A365A361 SN15 1AA: not on the flood risk listSN15 1AE: not on the flood risk listSN15 1AF: not on the flood risk listSN15 1AG: not on the flood risk listSN15 1AL: not on the flood risk listSN15 1AP: not on the flood risk listSN15 1AQ: not on the flood risk listSN15 1AR: not on the flood risk listSN15 1AU: not on the flood risk listSN15 1AZ: not on the flood risk listSN15 1BG: not on the flood risk listSN15 1BH: not on the flood risk listSN15 1BJ: not on the flood risk listSN15 1BN: not on the flood risk listSN15 1BP: not on the flood risk listSN15 1BT: not on the flood risk listSN15 1DA: not on the flood risk listSN15 1DB: not on the flood risk listSN15 1DL: not on the flood risk listSN15 1DR: not on the flood risk listSN15 1DT: not on the flood risk listSN15 1DU: not on the flood risk listSN15 1DX: not on the flood risk listSN15 1EG: not on the flood risk listSN15 1FF: not on the flood risk listSN15 1FJ: not on the flood risk listSN15 1FP: not on the flood risk listSN15 1FQ: not on the flood risk listSN15 1FT: not on the flood risk listSN15 1FZ: not on the flood risk listSN15 1GB: not on the flood risk listSN15 1GE: not on the flood risk listSN15 1GP: not on the flood risk listSN15 1GS: not on the flood risk listSN15 1HE: not on the flood risk listSN15 1HH: not on the flood risk listSN15 1HJ: not on the flood risk listSN15 1JB: not on the flood risk listSN15 1JG: not on the flood risk listSN15 1JR: not on the flood risk listSN15 1JS: not on the flood risk listSN15 1JY: not on the flood risk listSN15 1LD: not on the flood risk listSN15 1LE: not on the flood risk listSN15 1NG: not on the flood risk listSN15 1NH: not on the flood risk listSN15 1NN: not on the flood risk listSN15 1NR: not on the flood risk listSN15 1NS: not on the flood risk listSN15 1NT: not on the flood risk listSN15 1NZ: not on the flood risk listSN15 1PD: not on the flood risk listSN15 1PG: not on the flood risk listSN15 1PH: not on the flood risk listSN15 1PL: not on the flood risk listSN15 1PQ: not on the flood risk listSN15 1PR: not on the flood risk listSN15 1PX: not on the flood risk listSN15 1PZ: not on the flood risk listSN15 1QA: not on the flood risk listSN15 1QD: not on the flood risk listSN15 1QH: not on the flood risk listSN15 1QR: not on the flood risk listSN15 1QU: not on the flood risk listSN15 1QX: not on the flood risk listSN15 1QZ: not on the flood risk listSN15 1RH: not on the flood risk listSN15 1RL: not on the flood risk listSN15 1RS: not on the flood risk listSN15 1RU: not on the flood risk listSN15 1SZ: not on the flood risk listSN15 1UB: not on the flood risk listSN15 1UH: not on the flood risk listSN15 1UL: not on the flood risk listSN15 1UQ: not on the flood risk listSN15 1UX: not on the flood risk listSN15 2AF: not on the flood risk listSN15 2AG: not on the flood risk listSN15 2AH: not on the flood risk listSN15 2AJ: not on the flood risk listSN15 2AL: not on the flood risk listSN15 2AP: not on the flood risk listSN15 2AS: not on the flood risk listSN15 2AX: not on the flood risk listSN15 2BE: not on the flood risk listSN15 2BF: not on the flood risk listSN15 2BH: not on the flood risk listSN15 2BS: not on the flood risk listSN15 2BT: not on the flood risk listSN15 2DA: not on the flood risk listSN15 2DD: not on the flood risk listSN15 2DE: not on the flood risk listSN15 2DG: not on the flood risk listSN15 2DH: not on the flood risk listSN15 2DL: not on the flood risk listSN15 2DN: not on the flood risk listSN15 2DP: not on the flood risk listSN15 2DS: not on the flood risk listSN15 2DT: not on the flood risk listSN15 2DU: not on the flood risk listSN15 2DW: not on the flood risk listSN15 2DX: not on the flood risk listSN15 2DY: not on the flood risk listSN15 2DZ: not on the flood risk listSN15 2EA: not on the flood risk listSN15 2EB: not on the flood risk listSN15 2ED: not on the flood risk listSN15 2EE: not on the flood risk listSN15 2EG: not on the flood risk listSN15 2EH: not on the flood risk listSN15 2EJ: not on the flood risk listSN15 2EL: not on the flood risk listSN15 2EN: not on the flood risk listSN15 2EQ: not on the flood risk listSN15 2ER: not on the flood risk listSN15 2ES: not on the flood risk listSN15 2EW: not on the flood risk listSN15 2EY: not on the flood risk listSN15 2FF: not on the flood risk listSN15 2FH: not on the flood risk listSN15 2FL: not on the flood risk listSN15 2FP: not on the flood risk listSN15 2FQ: not on the flood risk listSN15 2FR: not on the flood risk listSN15 2FS: not on the flood risk listSN15 2FW: not on the flood risk listSN15 2FY: not on the flood risk listSN15 2FZ: not on the flood risk listSN15 2GA: not on the flood risk listSN15 2GB: not on the flood risk listSN15 2GH: not on the flood risk listSN15 2GR: not on the flood risk listSN15 2GS: not on the flood risk listSN15 2GW: not on the flood risk listSN15 2HB: not on the flood risk listSN15 2HD: not on the flood risk listSN15 2HE: not on the flood risk listSN15 2HF: not on the flood risk listSN15 2HG: not on the flood risk listSN15 2HN: not on the flood risk listSN15 2HR: not on the flood risk listSN15 2HU: not on the flood risk listSN15 2HW: not on the flood risk listSN15 2HX: not on the flood risk listSN15 2HY: not on the flood risk listSN15 2JA: not on the flood risk listSN15 2JB: not on the flood risk listSN15 2JF: not on the flood risk listSN15 2JH: not on the flood risk listSN15 2JJ: not on the flood risk listSN15 2JL: not on the flood risk listSN15 2JN: not on the flood risk listSN15 2JR: not on the flood risk listSN15 2JT: not on the flood risk listSN15 2JW: not on the flood risk listSN15 2JX: not on the flood risk listSN15 2JY: not on the flood risk listSN15 2JZ: not on the flood risk listSN15 2LE: not on the flood risk listSN15 2LF: not on the flood risk listSN15 2LG: not on the flood risk listSN15 2LJ: not on the flood risk listSN15 2LL: not on the flood risk listSN15 2LP: not on the flood risk listSN15 2LS: not on the flood risk listSN15 2LU: not on the flood risk listSN15 2LW: not on the flood risk listSN15 2LX: not on the flood risk listSN15 2LZ: not on the flood risk listSN15 2NA: not on the flood risk listSN15 2NB: not on the flood risk listSN15 2ND: not on the flood risk listSN15 2NE: not on the flood risk listSN15 2NG: not on the flood risk listSN15 2NH: not on the flood risk listSN15 2NN: not on the flood risk listSN15 2NP: not on the flood risk listSN15 2NS: not on the flood risk listSN15 2NT: not on the flood risk listSN15 2NW: not on the flood risk listSN15 2NX: not on the flood risk listSN15 2NY: not on the flood risk listSN15 2PB: not on the flood risk listSN15 2PE: not on the flood risk listSN15 2PG: not on the flood risk listSN15 2PL: not on the flood risk listSN15 2PN: not on the flood risk listSN15 2PP: not on the flood risk listSN15 2PQ: not on the flood risk listSN15 2PR: not on the flood risk listSN15 2PS: not on the flood risk listSN15 2PT: not on the flood risk listSN15 2PU: not on the flood risk listSN15 2PW: not on the flood risk listSN15 2PY: not on the flood risk listSN15 2PZ: not on the flood risk listSN15 2QA: not on the flood risk listSN15 2QB: not on the flood risk listSN15 2QD: not on the flood risk listSN15 2QE: not on the flood risk listSN15 2QG: not on the flood risk listSN15 2QH: not on the flood risk listSN15 2QJ: not on the flood risk listSN15 2QL: not on the flood risk listSN15 2QQ: not on the flood risk listSN15 2QT: not on the flood risk listSN15 2QU: not on the flood risk listSN15 2RE: not on the flood risk listSN15 2RY: not on the flood risk listSN15 2SB: not on the flood risk listSN15 2SE: not on the flood risk listSN15 3AA: not on the flood risk listSN15 3AB: not on the flood risk listSN15 3AF: not on the flood risk listSN15 3AH: not on the flood risk listSN15 3AJ: not on the flood risk listSN15 3AL: not on the flood risk listSN15 3AN: not on the flood risk listSN15 3AP: not on the flood risk listSN15 3AW: not on the flood risk listSN15 3BG: not on the flood risk listSN15 3BS: not on the flood risk listSN15 3DP: not on the flood risk listSN15 3EB: not on the flood risk listSN15 3EG: not on the flood risk listSN15 3EL: not on the flood risk listSN15 3EN: not on the flood risk listSN15 3EZ: not on the flood risk listSN15 3FA: not on the flood risk listSN15 3FB: not on the flood risk listSN15 3FF: not on the flood risk listSN15 3FH: not on the flood risk listSN15 3FL: not on the flood risk listSN15 3FQ: not on the flood risk listSN15 3FT: not on the flood risk listSN15 3FU: not on the flood risk listSN15 3FZ: not on the flood risk listSN15 3GA: not on the flood risk listSN15 3GB: not on the flood risk listSN15 3GE: not on the flood risk listSN15 3GQ: not on the flood risk listSN15 3GW: not on the flood risk listSN15 3HT: not on the flood risk listSN15 3JG: not on the flood risk listSN15 3JZ: not on the flood risk listSN15 3LL: not on the flood risk listSN15 3LN: not on the flood risk listSN15 3LP: not on the flood risk listSN15 3LR: not on the flood risk listSN15 3LS: not on the flood risk listSN15 3LT: not on the flood risk listSN15 3LW: not on the flood risk listSN15 3NB: not on the flood risk listSN15 3NE: not on the flood risk listSN15 3NL: not on the flood risk listSN15 3NR: not on the flood risk listSN15 3NT: not on the flood risk listSN15 3PB: not on the flood risk listSN15 3PE: not on the flood risk listSN15 3PF: not on the flood risk listSN15 3PG: not on the flood risk listSN15 3PR: not on the flood risk listSN15 3PU: not on the flood risk listSN15 3QD: not on the flood risk listSN15 3QN: not on the flood risk listSN15 3QX: not on the flood risk listSN15 3QY: not on the flood risk listSN15 3RD: not on the flood risk listSN15 3RE: not on the flood risk listSN15 3RH: not on the flood risk listSN15 3RJ: not on the flood risk listSN15 3RP: not on the flood risk listSN15 3RQ: not on the flood risk listSN15 3RR: not on the flood risk listSN15 3RS: not on the flood risk listSN15 3RT: not on the flood risk listSN15 3RU: not on the flood risk listSN15 3RW: not on the flood risk listSN15 3RX: not on the flood risk listSN15 3SY: not on the flood risk listSN15 3TA: not on the flood risk listSN15 3TB: not on the flood risk listSN15 3TE: not on the flood risk listSN15 3TF: not on the flood risk listSN15 3TG: not on the flood risk listSN15 3TP: not on the flood risk listSN15 3TS: not on the flood risk listSN15 3TY: not on the flood risk listSN15 3UA: not on the flood risk listSN15 3UF: not on the flood risk listSN15 3UH: not on the flood risk listSN15 3UP: not on the flood risk listSN15 3XB: not on the flood risk listSN15 4AA: not on the flood risk listSN15 4AB: not on the flood risk listSN15 4AD: not on the flood risk listSN15 4AE: not on the flood risk listSN15 4AF: not on the flood risk listSN15 4AH: not on the flood risk listSN15 4AL: not on the flood risk listSN15 4AN: not on the flood risk listSN15 4AP: not on the flood risk listSN15 4AR: not on the flood risk listSN15 4AS: not on the flood risk listSN15 4AT: not on the flood risk listSN15 4AX: not on the flood risk listSN15 4AY: not on the flood risk listSN15 4BD: not on the flood risk listSN15 4BH: not on the flood risk listSN15 4BL: not on the flood risk listSN15 4BN: not on the flood risk listSN15 4BP: not on the flood risk listSN15 4BS: not on the flood risk listSN15 4BT: not on the flood risk listSN15 4BU: not on the flood risk listSN15 4BW: not on the flood risk listSN15 4BX: not on the flood risk listSN15 4BY: not on the flood risk listSN15 4BZ: not on the flood risk listSN15 4DA: not on the flood risk listSN15 4DD: not on the flood risk listSN15 4DF: not on the flood risk listSN15 4DG: not on the flood risk listSN15 4DH: not on the flood risk listSN15 4DJ: not on the flood risk listSN15 4DN: not on the flood risk listSN15 4DP: not on the flood risk listSN15 4DQ: not on the flood risk listSN15 4DR: not on the flood risk listSN15 4DS: not on the flood risk listSN15 4DT: not on the flood risk listSN15 4DU: not on the flood risk listSN15 4DW: not on the flood risk listSN15 4DX: not on the flood risk listSN15 4DY: not on the flood risk listSN15 4DZ: not on the flood risk listSN15 4EA: not on the flood risk listSN15 4EB: not on the flood risk listSN15 4EH: not on the flood risk listSN15 4EL: not on the flood risk listSN15 4EP: not on the flood risk listSN15 4ER: not on the flood risk listSN15 4ES: not on the flood risk listSN15 4ET: not on the flood risk listSN15 4EU: not on the flood risk listSN15 4EW: not on the flood risk listSN15 4EX: not on the flood risk listSN15 4EY: not on the flood risk listSN15 4EZ: not on the flood risk listSN15 4FB: not on the flood risk listSN15 4FD: not on the flood risk listSN15 4FE: not on the flood risk listSN15 4FF: not on the flood risk listSN15 4FH: not on the flood risk listSN15 4FN: not on the flood risk listSN15 4FQ: not on the flood risk listSN15 4FS: not on the flood risk listSN15 4FT: not on the flood risk listSN15 4HB: not on the flood risk listSN15 4HE: not on the flood risk listSN15 4HF: not on the flood risk listSN15 4HG: not on the flood risk listSN15 4HH: not on the flood risk listSN15 4HL: not on the flood risk listSN15 4HN: not on the flood risk listSN15 4HQ: not on the flood risk listSN15 4HR: not on the flood risk listSN15 4HS: not on the flood risk listSN15 4JB: not on the flood risk listSN15 4JD: not on the flood risk listSN15 4JH: not on the flood risk listSN15 4JL: not on the flood risk listSN15 4JN: not on the flood risk listSN15 4JT: not on the flood risk listSN15 4JU: not on the flood risk listSN15 4JW: not on the flood risk listSN15 4JX: not on the flood risk listSN15 4JY: not on the flood risk listSN15 4LD: not on the flood risk listSN15 4LE: not on the flood risk listSN15 4LF: not on the flood risk listSN15 4LG: not on the flood risk listSN15 4LL: not on the flood risk listSN15 4LN: not on the flood risk listSN15 4LQ: not on the flood risk listSN15 4LT: not on the flood risk listSN15 4LU: not on the flood risk listSN15 4LY: not on the flood risk listSN15 4NA: not on the flood risk listSN15 4NF: not on the flood risk listSN15 4NG: not on the flood risk listSN15 4NH: not on the flood risk listSN15 4NJ: not on the flood risk listSN15 4NL: not on the flood risk listSN15 4NN: not on the flood risk listSN15 4NP: not on the flood risk listSN15 4NQ: not on the flood risk listSN15 4NS: not on the flood risk listSN15 4NT: not on the flood risk listSN15 4NW: not on the flood risk listSN15 4NZ: not on the flood risk listSN15 4PB: not on the flood risk listSN15 4PD: not on the flood risk listSN15 4PE: not on the flood risk listSN15 4PF: not on the flood risk listSN15 4PJ: not on the flood risk listSN15 4PL: not on the flood risk listSN15 4PQ: not on the flood risk listSN15 4PS: not on the flood risk listSN15 4PT: not on the flood risk listSN15 4PU: not on the flood risk listSN15 4PW: not on the flood risk listSN15 4QD: not on the flood risk listSN15 4QF: not on the flood risk listSN15 4QG: not on the flood risk listSN15 4QH: not on the flood risk listSN15 4QL: not on the flood risk listSN15 4QS: not on the flood risk listSN15 4QU: not on the flood risk listSN15 4QW: not on the flood risk listSN15 4QZ: not on the flood risk listSN15 4RD: not on the flood risk listSN15 4RJ: not on the flood risk listSN15 4RL: not on the flood risk listSN15 4RR: not on the flood risk listSN15 4SA: not on the flood risk listSN15 4SB: not on the flood risk listSN15 4SD: not on the flood risk listSN15 4SG: not on the flood risk listSN15 4SQ: not on the flood risk listSN15 4TA: not on the flood risk listSN15 4TH: not on the flood risk listSN15 4TP: not on the flood risk listSN15 4XX: not on the flood risk listSN15 5AA: not on the flood risk listSN15 5AD: not on the flood risk listSN15 5AE: not on the flood risk listSN15 5AG: not on the flood risk listSN15 5AJ: not on the flood risk listSN15 5AL: not on the flood risk listSN15 5AP: not on the flood risk listSN15 5AR: not on the flood risk listSN15 5AS: not on the flood risk listSN15 5AT: not on the flood risk listSN15 5AU: not on the flood risk listSN15 5AW: not on the flood risk listSN15 5AX: not on the flood risk listSN15 5AY: not on the flood risk listSN15 5AZ: not on the flood risk listSN15 5BA: not on the flood risk listSN15 5BB: not on the flood risk listSN15 5BD: not on the flood risk listSN15 5BE: not on the flood risk listSN15 5BF: not on the flood risk listSN15 5BG: not on the flood risk listSN15 5BH: not on the flood risk listSN15 5BJ: not on the flood risk listSN15 5BN: not on the flood risk listSN15 5BP: not on the flood risk listSN15 5BQ: not on the flood risk listSN15 5BS: not on the flood risk listSN15 5BT: not on the flood risk listSN15 5BU: not on the flood risk listSN15 5BW: not on the flood risk listSN15 5BX: not on the flood risk listSN15 5BY: not on the flood risk listSN15 5BZ: not on the flood risk listSN15 5DA: not on the flood risk listSN15 5DB: not on the flood risk listSN15 5DD: not on the flood risk listSN15 5DE: not on the flood risk listSN15 5DF: not on the flood risk listSN15 5DH: not on the flood risk listSN15 5DJ: not on the flood risk listSN15 5DQ: not on the flood risk listSN15 5DS: not on the flood risk listSN15 5DT: not on the flood risk listSN15 5DW: not on the flood risk listSN15 5DX: not on the flood risk listSN15 5DY: not on the flood risk listSN15 5DZ: not on the flood risk listSN15 5EB: not on the flood risk listSN15 5ED: not on the flood risk listSN15 5EE: not on the flood risk listSN15 5EF: not on the flood risk listSN15 5EG: not on the flood risk listSN15 5EH: not on the flood risk listSN15 5EJ: not on the flood risk listSN15 5EL: not on the flood risk listSN15 5EN: not on the flood risk listSN15 5EP: not on the flood risk listSN15 5EQ: not on the flood risk listSN15 5ER: not on the flood risk listSN15 5EU: not on the flood risk listSN15 5EW: not on the flood risk listSN15 5EY: not on the flood risk listSN15 5EZ: not on the flood risk listSN15 5FA: not on the flood risk listSN15 5FD: not on the flood risk listSN15 5FF: not on the flood risk listSN15 5FH: not on the flood risk listSN15 5FL: not on the flood risk listSN15 5HA: not on the flood risk listSN15 5HB: not on the flood risk listSN15 5HD: not on the flood risk listSN15 5HE: not on the flood risk listSN15 5HF: not on the flood risk listSN15 5HG: not on the flood risk listSN15 5HH: not on the flood risk listSN15 5HJ: not on the flood risk listSN15 5HP: not on the flood risk listSN15 5HQ: not on the flood risk listSN15 5HS: not on the flood risk listSN15 5HX: not on the flood risk listSN15 5HY: not on the flood risk listSN15 5JB: not on the flood risk listSN15 5JD: not on the flood risk listSN15 5JE: not on the flood risk listSN15 5JF: not on the flood risk listSN15 5JH: not on the flood risk listSN15 5JJ: not on the flood risk listSN15 5JL: not on the flood risk listSN15 5JP: not on the flood risk listSN15 5JR: not on the flood risk listSN15 5JS: not on the flood risk listSN15 5JT: not on the flood risk listSN15 5JU: not on the flood risk listSN15 5JW: not on the flood risk listSN15 5JX: not on the flood risk listSN15 5JZ: not on the flood risk listSN15 5LE: not on the flood risk listSN15 5LF: not on the flood risk listSN15 5LG: not on the flood risk listSN15 5LH: not on the flood risk listSN15 5LJ: not on the flood risk listSN15 5LL: not on the flood risk listSN15 5LQ: not on the flood risk listSN15 5LR: not on the flood risk listSN15 5LT: not on the flood risk listSN15 5LU: not on the flood risk listSN15 5LX: not on the flood risk listSN15 5LY: not on the flood risk listSN15 5LZ: not on the flood risk listSN15 5NB: not on the flood risk listSN15 5NE: not on the flood risk listSN15 5NF: not on the flood risk listSN15 5NG: not on the flood risk listSN15 5NH: not on the flood risk listSN15 5NJ: not on the flood risk listSN15 5NL: not on the flood risk listSN15 5NN: not on the flood risk listSN15 5NP: not on the flood risk listSN15 5NQ: not on the flood risk listSN15 5NT: not on the flood risk listSN15 5NU: not on the flood risk listSN15 5NW: not on the flood risk listSN15 5NY: not on the flood risk listSN15 5NZ: not on the flood risk listSN15 5PA: not on the flood risk listSN15 5PB: not on the flood risk listSN15 5PD: not on the flood risk listSN15 5PE: not on the flood risk listSN15 5PF: not on the flood risk listSN15 5PJ: not on the flood risk listSN15 5PN: not on the flood risk listSN15 5PP: not on the flood risk listSN15 5PR: not on the flood risk listSN15 5PT: not on the flood risk listSN15 5PU: not on the flood risk listSN15 5PW: not on the flood risk listSN15 5PX: not on the flood risk listSN15 5PY: not on the flood risk listSN15 5PZ: not on the flood risk listSN15 5QH: not on the flood risk listSN15 5QQ: not on the flood risk listSN15 1ER: low flood risk at worstSN15 1ES: low flood risk at worstSN15 2NZ: low flood risk at worstSN15 2PD: low flood risk at worstSN15 3ER: low flood risk at worstSN15 3BN: low flood risk at worstSN15 3PA: low flood risk at worstSN15 3QZ: low flood risk at worstSN15 3RB: low flood risk at worstSN15 3RF: low flood risk at worstSN15 3RG: low flood risk at worstSN15 3RL: low flood risk at worstSN15 3RN: low flood risk at worstSN15 3SQ: low flood risk at worstSN15 3XN: low flood risk at worstSN15 3XT: low flood risk at worstSN15 3XJ: low flood risk at worstSN15 4DL: low flood risk at worstSN15 4HJ: low flood risk at worstSN15 4HP: low flood risk at worstSN15 4JA: low flood risk at worstSN15 4JJ: low flood risk at worstSN15 4LS: low flood risk at worstSN15 4LX: low flood risk at worstSN15 4NE: low flood risk at worstSN15 4SW: low flood risk at worstSN15 5DG: low flood risk at worstSN15 5HT: low flood risk at worstSN15 2AD: medium flood risk at worstSN15 2DJ: medium flood risk at worstSN15 2NU: medium flood risk at worstSN15 2SA: medium flood risk at worstSN15 3GU: medium flood risk at worstSN15 4AU: medium flood risk at worstSN15 4JE: medium flood risk at worstSN15 4LP: medium flood risk at worstSN15 4LW: medium flood risk at worstSN15 4NB: medium flood risk at worstSN15 5EX: medium flood risk at worstSN15 5HU: medium flood risk at worstSN15 3EY: high flood riskSN15 2LT: high flood riskSN15 2JU: high flood riskSN15 2LB: high flood riskSN15 2LD: high flood riskSN15 2LY: high flood riskSN15 2NF: high flood riskSN15 2NR: high flood riskSN15 2PF: high flood riskSN15 3JY: high flood riskSN15 3HZ: high flood riskSN15 3JW: high flood riskSN15 3EP: high flood riskSN15 3JP: high flood riskSN15 3NU: high flood riskSN15 4BA: high flood riskSN15 4BG: high flood riskSN15 4BQ: high flood riskSN15 4DE: high flood riskSN15 4EQ: high flood riskSN15 4FL: high flood riskSN15 4HU: high flood riskSN15 4HW: high flood riskSN15 4HY: high flood riskSN15 4HZ: high flood riskSN15 4JF: high flood riskSN15 4JP: high flood riskSN15 4JR: high flood riskSN15 4JS: high flood riskSN15 4LJ: high flood riskSN15 4LR: high flood riskSN15 4LZ: high flood riskSN15 4RX: high flood riskSN15 5ES: high flood riskSN15 5JA: high flood riskSN15 5JN: high flood riskSN15 5LD: high flood risk ChippenhamCalneMelkshamRoyal Wootton BassettLyneham 10 postcodes at high or medium risk, outlined: this goes to SN15 3EP, the one with most homes and businesses at high risk10 postcodes at high or medium risk Map of every postcode in SN15, by flood risk Of the 1,316 postcodes in SN15 that ONS places, 38 have a home or business at high risk, 19 are at medium risk at worst, 44 are at low risk at worst and 1,215 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Chippenham, Calne, Melksham, Lyneham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A429A361 ChippenhamCalneMelkshamLyneham
  • A home or business at high risk: 38
  • At medium risk at worst: 19
  • At low risk at worst: 44
  • At very low risk only: 0
  • Not on the at-risk list: 1,215
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,316 postcodes in SN15 that ONS places, 38 have a home or business at high risk, 19 are at medium risk at worst, 44 are at low risk at worst and 1,215 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 160 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 51.4727, longitude -2.0818. 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

38 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.

SN15 4LZ15 at high riskSN15 4BG8 at high riskSN15 5JN8 at high riskSN15 3LD7 at high riskSN15 4HW6 at high riskSN15 4HU6 at high riskSN15 4EQ5 at high riskSN15 3EP4 at high riskSN15 3HZ4 at high riskSN15 4JS4 at high riskSN15 4BQ4 at high riskSN15 2LY4 at high risk

Where the postcodes at high or medium risk lie together

  • 10 postcodes at high or medium risk, outlined on the map. SN15 3EP, is the one with most homes and businesses at high risk.

What broadband can you get in SN15?

Ofcom reports on 1,224 of the 1,316 postcodes in SN15. At 766 of them every home and business can get gigabit broadband, and at 5 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit766 of 1,224
Postcodes where every home can get superfast1,085 of 1,224
Postcodes where some cannot get decent broadband5 of 1,224

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 SN15 at risk of flooding?

101 of the 1,316 postcodes in SN15 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 270 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 101 of 1,316 postcodes High: 114Medium: 156Low: 376Very low: 3

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 SN15?

Homes in SN15 sold for a typical £326,621 in the 12 months to August 2026, across 461 sales, up 2.1% on the 12 months before, HM Land Registry's figures show.

£326,621 typical price, the 12 months to August 2026
12 months to August 2025
£320,000
12 months to August 2026
£326,621

▲ up 2.1% on the 12 months before

Detached£487,500 160 sales
Semi-detached£322,000 133 sales
Terraced£245,000 111 sales
Flat or maisonette£164,000 57 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 SN15

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

SN15 1236 postcodesSN15 2246 postcodesSN15 3331 postcodesSN15 4257 postcodesSN15 5191 postcodesSN15 955 postcodes
UK postcode format explained

Places in SN15

Towns and villages with postcodes in SN15, and how many each has here.

Chippenham postcodes,688Lyneham postcodes,77

Who covers SN15

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

  • Chippenham915
  • South Cotswolds311
  • Melksham and Devizes90

Police force areas

  • Wiltshire1,316

Next to SN15

SN14 postcode district SN16 postcode district All SN districts Chippenham postcodes

"Next to" is by number: the districts before and after SN15 in the SN area.

Check a postcode

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