S20 postcode district: Sheffield and around

S20 is a postcode district in England, with 635 postcodes in use in 9 sectors. It has postcodes in Sheffield and Swallownest and Aston. It is split between 2 councils: Sheffield (632 postcodes) and Rotherham (3).

Postcodes in use
635
Sectors
9
Councils
2 councils
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 S20, by flood risk

Map of every postcode in S20, by flood risk Of the 635 postcodes in S20 that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 3 are at low risk at worst and 622 are not on the Environment Agency's at-risk list. Places named: Mosborough, Beighton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A57 S20 1AD: not on the flood risk listS20 1AF: not on the flood risk listS20 1AJ: not on the flood risk listS20 1AL: not on the flood risk listS20 1AN: not on the flood risk listS20 1AP: not on the flood risk listS20 1AQ: not on the flood risk listS20 1AR: not on the flood risk listS20 1AS: not on the flood risk listS20 1AT: not on the flood risk listS20 1AU: not on the flood risk listS20 1AW: not on the flood risk listS20 1AX: not on the flood risk listS20 1AY: not on the flood risk listS20 1AZ: not on the flood risk listS20 1BA: not on the flood risk listS20 1BB: not on the flood risk listS20 1BD: not on the flood risk listS20 1BE: not on the flood risk listS20 1BF: not on the flood risk listS20 1BG: not on the flood risk listS20 1BH: not on the flood risk listS20 1BJ: not on the flood risk listS20 1BL: not on the flood risk listS20 1BN: not on the flood risk listS20 1BP: not on the flood risk listS20 1BQ: not on the flood risk listS20 1BR: not on the flood risk listS20 1BS: not on the flood risk listS20 1BT: not on the flood risk listS20 1BU: not on the flood risk listS20 1BW: not on the flood risk listS20 1BX: not on the flood risk listS20 1BY: not on the flood risk listS20 1BZ: not on the flood risk listS20 1DA: not on the flood risk listS20 1DB: not on the flood risk listS20 1DD: not on the flood risk listS20 1DE: not on the flood risk listS20 1DG: not on the flood risk listS20 1DH: not on the flood risk listS20 1DJ: not on the flood risk listS20 1DL: not on the flood risk listS20 1DN: not on the flood risk listS20 1DP: not on the flood risk listS20 1DQ: not on the flood risk listS20 1DR: not on the flood risk listS20 1DU: not on the flood risk listS20 1DW: not on the flood risk listS20 1DX: not on the flood risk listS20 1EA: not on the flood risk listS20 1EB: not on the flood risk listS20 1EF: not on the flood risk listS20 1EG: not on the flood risk listS20 1EH: not on the flood risk listS20 1EJ: not on the flood risk listS20 1EL: not on the flood risk listS20 1EN: not on the flood risk listS20 1EP: not on the flood risk listS20 1EQ: not on the flood risk listS20 1ER: not on the flood risk listS20 1ES: not on the flood risk listS20 1ET: not on the flood risk listS20 1EU: not on the flood risk listS20 1EW: not on the flood risk listS20 1EX: not on the flood risk listS20 1EY: not on the flood risk listS20 1EZ: not on the flood risk listS20 1FA: not on the flood risk listS20 1FB: not on the flood risk listS20 1FD: not on the flood risk listS20 1FE: not on the flood risk listS20 1FF: not on the flood risk listS20 1FG: not on the flood risk listS20 1FH: not on the flood risk listS20 1FJ: not on the flood risk listS20 1FL: not on the flood risk listS20 1FN: not on the flood risk listS20 1FP: not on the flood risk listS20 1FQ: not on the flood risk listS20 1FR: not on the flood risk listS20 1FS: not on the flood risk listS20 1FT: not on the flood risk listS20 1FU: not on the flood risk listS20 1FW: not on the flood risk listS20 1FX: not on the flood risk listS20 1FY: not on the flood risk listS20 1FZ: not on the flood risk listS20 1GA: not on the flood risk listS20 1GB: not on the flood risk listS20 1GD: not on the flood risk listS20 1GE: not on the flood risk listS20 1GF: not on the flood risk listS20 1GG: not on the flood risk listS20 1GP: not on the flood risk listS20 1GQ: not on the flood risk listS20 1GW: not on the flood risk listS20 1GX: not on the flood risk listS20 1GY: not on the flood risk listS20 1HA: not on the flood risk listS20 1HB: not on the flood risk listS20 1HD: not on the flood risk listS20 1HE: not on the flood risk listS20 1HQ: not on the flood risk listS20 1NY: not on the flood risk listS20 1NZ: not on the flood risk listS20 1WA: not on the flood risk listS20 1XA: not on the flood risk listS20 1XB: not on the flood risk listS20 1XD: not on the flood risk listS20 1XE: not on the flood risk listS20 1XJ: not on the flood risk listS20 1XL: not on the flood risk listS20 2DG: not on the flood risk listS20 2DH: not on the flood risk listS20 2DJ: not on the flood risk listS20 2DL: not on the flood risk listS20 2DP: not on the flood risk listS20 2DS: not on the flood risk listS20 2DT: not on the flood risk listS20 2DU: not on the flood risk listS20 2DW: not on the flood risk listS20 2DY: not on the flood risk listS20 2DZ: not on the flood risk listS20 2GL: not on the flood risk listS20 2GN: not on the flood risk listS20 2GR: not on the flood risk listS20 2GS: not on the flood risk listS20 2GT: not on the flood risk listS20 2GU: not on the flood risk listS20 2GY: not on the flood risk listS20 2NS: not on the flood risk listS20 2NT: not on the flood risk listS20 2PA: not on the flood risk listS20 2PB: not on the flood risk listS20 2PD: not on the flood risk listS20 2PE: not on the flood risk listS20 2PF: not on the flood risk listS20 2PG: not on the flood risk listS20 2PH: not on the flood risk listS20 2PJ: not on the flood risk listS20 2PL: not on the flood risk listS20 2PN: not on the flood risk listS20 2PP: not on the flood risk listS20 2PQ: not on the flood risk listS20 2PR: not on the flood risk listS20 2PS: not on the flood risk listS20 2PT: not on the flood risk listS20 2PW: not on the flood risk listS20 2PX: not on the flood risk listS20 2PY: not on the flood risk listS20 2PZ: not on the flood risk listS20 2QA: not on the flood risk listS20 2QB: not on the flood risk listS20 2QD: not on the flood risk listS20 2QE: not on the flood risk listS20 2QF: not on the flood risk listS20 2QG: not on the flood risk listS20 2QH: not on the flood risk listS20 2QJ: not on the flood risk listS20 2QL: not on the flood risk listS20 2QN: not on the flood risk listS20 2QP: not on the flood risk listS20 2QQ: not on the flood risk listS20 2QR: not on the flood risk listS20 2QS: not on the flood risk listS20 2QT: not on the flood risk listS20 2QU: not on the flood risk listS20 2QW: not on the flood risk listS20 2QX: not on the flood risk listS20 2QY: not on the flood risk listS20 2QZ: not on the flood risk listS20 2RR: not on the flood risk listS20 2RS: not on the flood risk listS20 2UA: not on the flood risk listS20 2UB: not on the flood risk listS20 3AA: not on the flood risk listS20 3AB: not on the flood risk listS20 3FE: not on the flood risk listS20 3FF: not on the flood risk listS20 3FG: not on the flood risk listS20 3FH: not on the flood risk listS20 3FJ: not on the flood risk listS20 3FR: not on the flood risk listS20 3FS: not on the flood risk listS20 3FU: not on the flood risk listS20 3GA: not on the flood risk listS20 3GB: not on the flood risk listS20 3GE: not on the flood risk listS20 3GH: not on the flood risk listS20 3GL: not on the flood risk listS20 3GN: not on the flood risk listS20 3GP: not on the flood risk listS20 3GQ: not on the flood risk listS20 3GR: not on the flood risk listS20 3GS: not on the flood risk listS20 3GT: not on the flood risk listS20 3GU: not on the flood risk listS20 3GW: not on the flood risk listS20 3GX: not on the flood risk listS20 3GY: not on the flood risk listS20 3GZ: not on the flood risk listS20 3PJ: not on the flood risk listS20 3RW: not on the flood risk listS20 4AA: not on the flood risk listS20 4AB: not on the flood risk listS20 4AD: not on the flood risk listS20 4AE: not on the flood risk listS20 4AF: not on the flood risk listS20 4AG: not on the flood risk listS20 4AH: not on the flood risk listS20 4GA: not on the flood risk listS20 4GB: not on the flood risk listS20 4GF: not on the flood risk listS20 4GG: not on the flood risk listS20 4GJ: not on the flood risk listS20 4GN: not on the flood risk listS20 4GQ: not on the flood risk listS20 4GX: not on the flood risk listS20 4HA: not on the flood risk listS20 4HB: not on the flood risk listS20 4HD: not on the flood risk listS20 4HE: not on the flood risk listS20 4HF: not on the flood risk listS20 4HG: not on the flood risk listS20 4HH: not on the flood risk listS20 4HL: not on the flood risk listS20 4HN: not on the flood risk listS20 4HP: not on the flood risk listS20 4HQ: not on the flood risk listS20 4HR: not on the flood risk listS20 4HS: not on the flood risk listS20 4HT: not on the flood risk listS20 4HU: not on the flood risk listS20 4HW: not on the flood risk listS20 4HX: not on the flood risk listS20 4HY: not on the flood risk listS20 4RW: not on the flood risk listS20 4RY: not on the flood risk listS20 4RZ: not on the flood risk listS20 4SA: not on the flood risk listS20 4SB: not on the flood risk listS20 4SD: not on the flood risk listS20 4SE: not on the flood risk listS20 4SF: not on the flood risk listS20 4SG: not on the flood risk listS20 4SH: not on the flood risk listS20 4SJ: not on the flood risk listS20 4SL: not on the flood risk listS20 4SN: not on the flood risk listS20 4SP: not on the flood risk listS20 4SQ: not on the flood risk listS20 4SR: not on the flood risk listS20 4SS: not on the flood risk listS20 4ST: not on the flood risk listS20 4SU: not on the flood risk listS20 4SW: not on the flood risk listS20 4SX: not on the flood risk listS20 4SY: not on the flood risk listS20 4SZ: not on the flood risk listS20 4TA: not on the flood risk listS20 4TB: not on the flood risk listS20 4TD: not on the flood risk listS20 4TE: not on the flood risk listS20 4TF: not on the flood risk listS20 4TG: not on the flood risk listS20 4TH: not on the flood risk listS20 4TJ: not on the flood risk listS20 4TL: not on the flood risk listS20 4TN: not on the flood risk listS20 4TP: not on the flood risk listS20 4TQ: not on the flood risk listS20 4TR: not on the flood risk listS20 4TS: not on the flood risk listS20 4TT: not on the flood risk listS20 4TU: not on the flood risk listS20 4TW: not on the flood risk listS20 4TX: not on the flood risk listS20 4TY: not on the flood risk listS20 4UA: not on the flood risk listS20 4UB: not on the flood risk listS20 4UD: not on the flood risk listS20 4XA: not on the flood risk listS20 4XB: not on the flood risk listS20 4XD: not on the flood risk listS20 4XE: not on the flood risk listS20 5AA: not on the flood risk listS20 5AB: not on the flood risk listS20 5AD: not on the flood risk listS20 5AE: not on the flood risk listS20 5AF: not on the flood risk listS20 5AG: not on the flood risk listS20 5AJ: not on the flood risk listS20 5AL: not on the flood risk listS20 5AN: not on the flood risk listS20 5AP: not on the flood risk listS20 5AQ: not on the flood risk listS20 5AR: not on the flood risk listS20 5AS: not on the flood risk listS20 5AT: not on the flood risk listS20 5AU: not on the flood risk listS20 5AW: not on the flood risk listS20 5AX: not on the flood risk listS20 5AY: not on the flood risk listS20 5AZ: not on the flood risk listS20 5BA: not on the flood risk listS20 5BB: not on the flood risk listS20 5BD: not on the flood risk listS20 5BE: not on the flood risk listS20 5BF: not on the flood risk listS20 5BG: not on the flood risk listS20 5BH: not on the flood risk listS20 5BJ: not on the flood risk listS20 5BL: not on the flood risk listS20 5BN: not on the flood risk listS20 5BP: not on the flood risk listS20 5BR: not on the flood risk listS20 5BS: not on the flood risk listS20 5BT: not on the flood risk listS20 5BU: not on the flood risk listS20 5BW: not on the flood risk listS20 5BX: not on the flood risk listS20 5BY: not on the flood risk listS20 5BZ: not on the flood risk listS20 5DA: not on the flood risk listS20 5DB: not on the flood risk listS20 5DD: not on the flood risk listS20 5DE: not on the flood risk listS20 5DF: not on the flood risk listS20 5DG: not on the flood risk listS20 5DH: not on the flood risk listS20 5DJ: not on the flood risk listS20 5DL: not on the flood risk listS20 5DN: not on the flood risk listS20 5DP: not on the flood risk listS20 5DQ: not on the flood risk listS20 5DR: not on the flood risk listS20 5DS: not on the flood risk listS20 5DT: not on the flood risk listS20 5DU: not on the flood risk listS20 5DW: not on the flood risk listS20 5DX: not on the flood risk listS20 5DY: not on the flood risk listS20 5DZ: not on the flood risk listS20 5EA: not on the flood risk listS20 5EB: not on the flood risk listS20 5EF: not on the flood risk listS20 5EG: not on the flood risk listS20 5EH: not on the flood risk listS20 5EJ: not on the flood risk listS20 5EL: not on the flood risk listS20 5EN: not on the flood risk listS20 5EP: not on the flood risk listS20 5EQ: not on the flood risk listS20 5ER: not on the flood risk listS20 5ES: not on the flood risk listS20 5ET: not on the flood risk listS20 5EU: not on the flood risk listS20 5EW: not on the flood risk listS20 5EX: not on the flood risk listS20 5EY: not on the flood risk listS20 5EZ: not on the flood risk listS20 5FA: not on the flood risk listS20 5FB: not on the flood risk listS20 5FD: not on the flood risk listS20 5FE: not on the flood risk listS20 5FF: not on the flood risk listS20 5FG: not on the flood risk listS20 5FH: not on the flood risk listS20 5FJ: not on the flood risk listS20 5FL: not on the flood risk listS20 5FN: not on the flood risk listS20 5FP: not on the flood risk listS20 5FQ: not on the flood risk listS20 5FR: not on the flood risk listS20 5FS: not on the flood risk listS20 5FT: not on the flood risk listS20 5JP: not on the flood risk listS20 5JR: not on the flood risk listS20 5JS: not on the flood risk listS20 5JT: not on the flood risk listS20 5JU: not on the flood risk listS20 5JW: not on the flood risk listS20 5JX: not on the flood risk listS20 5PA: not on the flood risk listS20 5PB: not on the flood risk listS20 5PD: not on the flood risk listS20 5PE: not on the flood risk listS20 5PG: not on the flood risk listS20 5PH: not on the flood risk listS20 5PJ: not on the flood risk listS20 5PL: not on the flood risk listS20 5PN: not on the flood risk listS20 5PP: not on the flood risk listS20 5PQ: not on the flood risk listS20 5PR: not on the flood risk listS20 5PZ: not on the flood risk listS20 6PA: not on the flood risk listS20 6PB: not on the flood risk listS20 6PD: not on the flood risk listS20 6PE: not on the flood risk listS20 6PF: not on the flood risk listS20 6PG: not on the flood risk listS20 6QA: not on the flood risk listS20 6QB: not on the flood risk listS20 6QD: not on the flood risk listS20 6QE: not on the flood risk listS20 6QF: not on the flood risk listS20 6QG: not on the flood risk listS20 6QH: not on the flood risk listS20 6QJ: not on the flood risk listS20 6QL: not on the flood risk listS20 6RA: not on the flood risk listS20 6RB: not on the flood risk listS20 6RD: not on the flood risk listS20 6RE: not on the flood risk listS20 6RF: not on the flood risk listS20 6RG: not on the flood risk listS20 6RH: not on the flood risk listS20 6RJ: not on the flood risk listS20 6RL: not on the flood risk listS20 6RN: not on the flood risk listS20 6RP: not on the flood risk listS20 6RQ: not on the flood risk listS20 6RR: not on the flood risk listS20 6RS: not on the flood risk listS20 6RT: not on the flood risk listS20 6RU: not on the flood risk listS20 6RW: not on the flood risk listS20 6RX: not on the flood risk listS20 6RY: not on the flood risk listS20 6RZ: not on the flood risk listS20 6SA: not on the flood risk listS20 6SB: not on the flood risk listS20 6SD: not on the flood risk listS20 6SE: not on the flood risk listS20 6SF: not on the flood risk listS20 6SG: not on the flood risk listS20 6SH: not on the flood risk listS20 6SJ: not on the flood risk listS20 6SL: not on the flood risk listS20 6SN: not on the flood risk listS20 6SP: not on the flood risk listS20 6SQ: not on the flood risk listS20 6SR: not on the flood risk listS20 6SS: not on the flood risk listS20 6ST: not on the flood risk listS20 6SU: not on the flood risk listS20 6SW: not on the flood risk listS20 6SX: not on the flood risk listS20 6SY: not on the flood risk listS20 6SZ: not on the flood risk listS20 6TA: not on the flood risk listS20 6TD: not on the flood risk listS20 6TE: not on the flood risk listS20 6TF: not on the flood risk listS20 6TG: not on the flood risk listS20 6TH: not on the flood risk listS20 6TR: not on the flood risk listS20 7AB: not on the flood risk listS20 7HA: not on the flood risk listS20 7HB: not on the flood risk listS20 7HD: not on the flood risk listS20 7HF: not on the flood risk listS20 7HH: not on the flood risk listS20 7HJ: not on the flood risk listS20 7HL: not on the flood risk listS20 7HQ: not on the flood risk listS20 7HR: not on the flood risk listS20 7HS: not on the flood risk listS20 7HT: not on the flood risk listS20 7HU: not on the flood risk listS20 7HW: not on the flood risk listS20 7HX: not on the flood risk listS20 7HY: not on the flood risk listS20 7HZ: not on the flood risk listS20 7JA: not on the flood risk listS20 7JB: not on the flood risk listS20 7JD: not on the flood risk listS20 7JE: not on the flood risk listS20 7JH: not on the flood risk listS20 7JJ: not on the flood risk listS20 7JL: not on the flood risk listS20 7JN: not on the flood risk listS20 7JP: not on the flood risk listS20 7JS: not on the flood risk listS20 7JU: not on the flood risk listS20 7LA: not on the flood risk listS20 7LB: not on the flood risk listS20 7LD: not on the flood risk listS20 7LE: not on the flood risk listS20 7LF: not on the flood risk listS20 7LG: not on the flood risk listS20 7LH: not on the flood risk listS20 7LJ: not on the flood risk listS20 7LL: not on the flood risk listS20 7LN: not on the flood risk listS20 7LP: not on the flood risk listS20 7LQ: not on the flood risk listS20 7LR: not on the flood risk listS20 7LS: not on the flood risk listS20 7LT: not on the flood risk listS20 7LU: not on the flood risk listS20 7LW: not on the flood risk listS20 7LX: not on the flood risk listS20 7LY: not on the flood risk listS20 7LZ: not on the flood risk listS20 7NA: not on the flood risk listS20 7NB: not on the flood risk listS20 7ND: not on the flood risk listS20 7NE: not on the flood risk listS20 7NF: not on the flood risk listS20 7NG: not on the flood risk listS20 7NH: not on the flood risk listS20 7NJ: not on the flood risk listS20 7NL: not on the flood risk listS20 7NN: not on the flood risk listS20 7NP: not on the flood risk listS20 7NQ: not on the flood risk listS20 7NR: not on the flood risk listS20 7NU: not on the flood risk listS20 7PH: not on the flood risk listS20 7PJ: not on the flood risk listS20 7PL: not on the flood risk listS20 7PN: not on the flood risk listS20 7PP: not on the flood risk listS20 7PQ: not on the flood risk listS20 7PU: not on the flood risk listS20 7XX: not on the flood risk listS20 8EB: not on the flood risk listS20 8ED: not on the flood risk listS20 8EE: not on the flood risk listS20 8EF: not on the flood risk listS20 8EG: not on the flood risk listS20 8EH: not on the flood risk listS20 8EJ: not on the flood risk listS20 8EL: not on the flood risk listS20 8EN: not on the flood risk listS20 8EP: not on the flood risk listS20 8EQ: not on the flood risk listS20 8ER: not on the flood risk listS20 8ES: not on the flood risk listS20 8ET: not on the flood risk listS20 8EU: not on the flood risk listS20 8EW: not on the flood risk listS20 8EX: not on the flood risk listS20 8EY: not on the flood risk listS20 8EZ: not on the flood risk listS20 8FA: not on the flood risk listS20 8FB: not on the flood risk listS20 8FJ: not on the flood risk listS20 8GD: not on the flood risk listS20 8GE: not on the flood risk listS20 8GF: not on the flood risk listS20 8GH: not on the flood risk listS20 8GJ: not on the flood risk listS20 8GL: not on the flood risk listS20 8GN: not on the flood risk listS20 8GP: not on the flood risk listS20 8GQ: not on the flood risk listS20 8GR: not on the flood risk listS20 8GS: not on the flood risk listS20 8GW: not on the flood risk listS20 8JA: not on the flood risk listS20 8JB: not on the flood risk listS20 8JD: not on the flood risk listS20 8JE: not on the flood risk listS20 8JF: not on the flood risk listS20 8JG: not on the flood risk listS20 8JH: not on the flood risk listS20 8JJ: not on the flood risk listS20 8JL: not on the flood risk listS20 8JN: not on the flood risk listS20 8LA: not on the flood risk listS20 8LB: not on the flood risk listS20 8LE: not on the flood risk listS20 8LF: not on the flood risk listS20 8LH: not on the flood risk listS20 8LJ: not on the flood risk listS20 8LL: not on the flood risk listS20 8LN: not on the flood risk listS20 8LP: not on the flood risk listS20 8LQ: not on the flood risk listS20 8LR: not on the flood risk listS20 8LS: not on the flood risk listS20 8LT: not on the flood risk listS20 8LU: not on the flood risk listS20 8LW: not on the flood risk listS20 8LX: not on the flood risk listS20 8LY: not on the flood risk listS20 8NA: not on the flood risk listS20 8NB: not on the flood risk listS20 8ND: not on the flood risk listS20 8NE: not on the flood risk listS20 8NF: not on the flood risk listS20 8NG: not on the flood risk listS20 8NH: not on the flood risk listS20 8NJ: not on the flood risk listS20 8NL: not on the flood risk listS20 8NN: not on the flood risk listS20 8NP: not on the flood risk listS20 8NQ: not on the flood risk listS20 1AA: low flood risk at worstS20 1AG: low flood risk at worstS20 1DF: low flood risk at worstS20 1ED: medium flood risk at worstS20 1EE: medium flood risk at worstS20 3AD: medium flood risk at worstS20 1AE: high flood riskS20 1AH: high flood riskS20 6TB: high flood riskS20 7HE: high flood riskS20 7HG: high flood riskS20 7HN: high flood riskS20 7HP: high flood risk MosboroughBeighton Map of every postcode in S20, by flood risk Of the 635 postcodes in S20 that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 3 are at low risk at worst and 622 are not on the Environment Agency's at-risk list. Places named: Mosborough, Beighton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A57 MosboroughBeighton
  • A home or business at high risk: 7
  • At medium risk at worst: 3
  • At low risk at worst: 3
  • At very low risk only: 0
  • Not on the at-risk list: 622

Of the 635 postcodes in S20 that ONS places, 7 have a home or business at high risk, 3 are at medium risk at worst, 3 are at low risk at worst and 622 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. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 53.3346, longitude -1.3522. 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

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

S20 7HP9 at high riskS20 7HN9 at high riskS20 1AE6 at high riskS20 7HE6 at high riskS20 1AH4 at high riskS20 7HG4 at high riskS20 6TB1 at high risk

What broadband can you get in S20?

Ofcom reports on 619 of the 635 postcodes in S20. At 598 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit598 of 619
Postcodes where every home can get superfast613 of 619

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 S20 at risk of flooding?

13 of the 635 postcodes in S20 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 52 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 13 of 635 postcodes High: 39Medium: 13Low: 65

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 S20?

Homes in S20 sold for a typical £208,125 in the 12 months to August 2026, across 326 sales, down 3.2% on the 12 months before, HM Land Registry's figures show.

£208,125 typical price, the 12 months to August 2026
12 months to August 2025
£215,000
12 months to August 2026
£208,125

▼ down 3.2% on the 12 months before

Detached£305,000 92 sales
Semi-detached£198,258 132 sales
Terraced£159,000 90 sales
Flat or maisonette£113,000 12 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 S20

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

S20 1120 postcodesS20 264 postcodesS20 329 postcodesS20 482 postcodesS20 5113 postcodesS20 663 postcodesS20 774 postcodesS20 876 postcodesS20 914 postcodes
UK postcode format explained

Places in S20

Towns and villages with postcodes in S20, and how many each has here.

Sheffield postcodes,613Swallownest and Aston postcodes,2

Who covers S20

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

  • Sheffield South East632
  • Rother Valley3

Police force areas

  • South Yorkshire635

Next to S20

S18 postcode district S21 postcode district All S districts Sheffield postcodes

"Next to" is by number: the districts before and after S20 in the S area.

Check a postcode

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