SS1 postcode district: Southend-on-Sea and around

SS1 is a postcode district in England, with 692 postcodes in use in 4 sectors. It has postcodes in Southend-on-Sea. Its council is Southend-on-Sea.

Postcodes in use
692
Sectors
4
Council
Southend-on-Sea
Places
Southend-on-Sea

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

Every postcode in SS1, by flood risk

Map of every postcode in SS1, by flood risk Of the 692 postcodes in SS1 that ONS places, 26 have a home or business at high risk, 2 are at medium risk at worst, 13 are at low risk at worst, 42 are at very low risk only and 609 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 19 postcodes at high or medium risk. Places named: Southend-on-Sea. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1159 SS1 1AA: not on the flood risk listSS1 1AB: not on the flood risk listSS1 1AH: not on the flood risk listSS1 1AJ: not on the flood risk listSS1 1AL: not on the flood risk listSS1 1AN: not on the flood risk listSS1 1AS: not on the flood risk listSS1 1AT: not on the flood risk listSS1 1BD: not on the flood risk listSS1 1BF: not on the flood risk listSS1 1BH: not on the flood risk listSS1 1BJ: not on the flood risk listSS1 1BU: not on the flood risk listSS1 1BW: not on the flood risk listSS1 1BX: not on the flood risk listSS1 1DA: not on the flood risk listSS1 1DB: not on the flood risk listSS1 1DE: not on the flood risk listSS1 1DL: not on the flood risk listSS1 1DN: not on the flood risk listSS1 1DP: not on the flood risk listSS1 1DQ: not on the flood risk listSS1 1DR: not on the flood risk listSS1 1DU: not on the flood risk listSS1 1DW: not on the flood risk listSS1 1DY: not on the flood risk listSS1 1EA: not on the flood risk listSS1 1EF: not on the flood risk listSS1 1EJ: not on the flood risk listSS1 1EN: not on the flood risk listSS1 1EP: not on the flood risk listSS1 1ER: not on the flood risk listSS1 1ES: not on the flood risk listSS1 1ET: not on the flood risk listSS1 1EW: not on the flood risk listSS1 1EX: not on the flood risk listSS1 1EY: not on the flood risk listSS1 1EZ: not on the flood risk listSS1 1FA: not on the flood risk listSS1 1FN: not on the flood risk listSS1 1FR: not on the flood risk listSS1 1FS: not on the flood risk listSS1 1FU: not on the flood risk listSS1 1FW: not on the flood risk listSS1 1GB: not on the flood risk listSS1 1GD: not on the flood risk listSS1 1GE: not on the flood risk listSS1 1GL: not on the flood risk listSS1 1HA: not on the flood risk listSS1 1HD: not on the flood risk listSS1 1HE: not on the flood risk listSS1 1HF: not on the flood risk listSS1 1HG: not on the flood risk listSS1 1HH: not on the flood risk listSS1 1HJ: not on the flood risk listSS1 1HN: not on the flood risk listSS1 1HP: not on the flood risk listSS1 1HQ: not on the flood risk listSS1 1HS: not on the flood risk listSS1 1HY: not on the flood risk listSS1 1JD: not on the flood risk listSS1 1JE: not on the flood risk listSS1 1JF: not on the flood risk listSS1 1JG: not on the flood risk listSS1 1JN: not on the flood risk listSS1 1JS: not on the flood risk listSS1 1JT: not on the flood risk listSS1 1JU: not on the flood risk listSS1 1JX: not on the flood risk listSS1 1LB: not on the flood risk listSS1 1LL: not on the flood risk listSS1 1LN: not on the flood risk listSS1 1LQ: not on the flood risk listSS1 1LR: not on the flood risk listSS1 1LT: not on the flood risk listSS1 1LU: not on the flood risk listSS1 1LY: not on the flood risk listSS1 1LZ: not on the flood risk listSS1 1NA: not on the flood risk listSS1 1NB: not on the flood risk listSS1 1ND: not on the flood risk listSS1 1NE: not on the flood risk listSS1 1NF: not on the flood risk listSS1 1NG: not on the flood risk listSS1 1NJ: not on the flood risk listSS1 1NL: not on the flood risk listSS1 1NN: not on the flood risk listSS1 1NP: not on the flood risk listSS1 1NQ: not on the flood risk listSS1 1NS: not on the flood risk listSS1 1NW: not on the flood risk listSS1 1NX: not on the flood risk listSS1 1NZ: not on the flood risk listSS1 1PF: not on the flood risk listSS1 1PG: not on the flood risk listSS1 1PH: not on the flood risk listSS1 1PJ: not on the flood risk listSS1 1PL: not on the flood risk listSS1 1PP: not on the flood risk listSS1 1PQ: not on the flood risk listSS1 1PT: not on the flood risk listSS1 1PU: not on the flood risk listSS1 1PX: not on the flood risk listSS1 1PY: not on the flood risk listSS1 1PZ: not on the flood risk listSS1 1QA: not on the flood risk listSS1 1QB: not on the flood risk listSS1 1QD: not on the flood risk listSS1 1QE: not on the flood risk listSS1 1QH: not on the flood risk listSS1 1TJ: not on the flood risk listSS1 2AB: not on the flood risk listSS1 2AJ: not on the flood risk listSS1 2AL: not on the flood risk listSS1 2AN: not on the flood risk listSS1 2AP: not on the flood risk listSS1 2AR: not on the flood risk listSS1 2AS: not on the flood risk listSS1 2AT: not on the flood risk listSS1 2AU: not on the flood risk listSS1 2AW: not on the flood risk listSS1 2AY: not on the flood risk listSS1 2BD: not on the flood risk listSS1 2BH: not on the flood risk listSS1 2BQ: not on the flood risk listSS1 2BZ: not on the flood risk listSS1 2DB: not on the flood risk listSS1 2DD: not on the flood risk listSS1 2DE: not on the flood risk listSS1 2DF: not on the flood risk listSS1 2DG: not on the flood risk listSS1 2DJ: not on the flood risk listSS1 2DL: not on the flood risk listSS1 2DN: not on the flood risk listSS1 2DP: not on the flood risk listSS1 2DR: not on the flood risk listSS1 2DS: not on the flood risk listSS1 2DT: not on the flood risk listSS1 2DU: not on the flood risk listSS1 2DW: not on the flood risk listSS1 2DX: not on the flood risk listSS1 2DY: not on the flood risk listSS1 2DZ: not on the flood risk listSS1 2EA: not on the flood risk listSS1 2EB: not on the flood risk listSS1 2EE: not on the flood risk listSS1 2EH: not on the flood risk listSS1 2EQ: not on the flood risk listSS1 2EU: not on the flood risk listSS1 2EY: not on the flood risk listSS1 2FB: not on the flood risk listSS1 2FJ: not on the flood risk listSS1 2FQ: not on the flood risk listSS1 2FS: not on the flood risk listSS1 2FY: not on the flood risk listSS1 2GD: not on the flood risk listSS1 2GJ: not on the flood risk listSS1 2GW: not on the flood risk listSS1 2HA: not on the flood risk listSS1 2HB: not on the flood risk listSS1 2HD: not on the flood risk listSS1 2HE: not on the flood risk listSS1 2HF: not on the flood risk listSS1 2HG: not on the flood risk listSS1 2HH: not on the flood risk listSS1 2HJ: not on the flood risk listSS1 2HL: not on the flood risk listSS1 2HN: not on the flood risk listSS1 2HQ: not on the flood risk listSS1 2HR: not on the flood risk listSS1 2HZ: not on the flood risk listSS1 2JA: not on the flood risk listSS1 2JB: not on the flood risk listSS1 2JE: not on the flood risk listSS1 2JJ: not on the flood risk listSS1 2JN: not on the flood risk listSS1 2JY: not on the flood risk listSS1 2LA: not on the flood risk listSS1 2LG: not on the flood risk listSS1 2LH: not on the flood risk listSS1 2LL: not on the flood risk listSS1 2LN: not on the flood risk listSS1 2LQ: not on the flood risk listSS1 2LR: not on the flood risk listSS1 2LS: not on the flood risk listSS1 2LT: not on the flood risk listSS1 2LU: not on the flood risk listSS1 2LX: not on the flood risk listSS1 2LY: not on the flood risk listSS1 2NA: not on the flood risk listSS1 2ND: not on the flood risk listSS1 2NE: not on the flood risk listSS1 2NF: not on the flood risk listSS1 2NH: not on the flood risk listSS1 2NJ: not on the flood risk listSS1 2NL: not on the flood risk listSS1 2NP: not on the flood risk listSS1 2NQ: not on the flood risk listSS1 2NS: not on the flood risk listSS1 2NT: not on the flood risk listSS1 2NU: not on the flood risk listSS1 2NW: not on the flood risk listSS1 2PB: not on the flood risk listSS1 2PE: not on the flood risk listSS1 2PF: not on the flood risk listSS1 2PG: not on the flood risk listSS1 2PH: not on the flood risk listSS1 2PL: not on the flood risk listSS1 2PN: not on the flood risk listSS1 2PP: not on the flood risk listSS1 2PQ: not on the flood risk listSS1 2PS: not on the flood risk listSS1 2PT: not on the flood risk listSS1 2PU: not on the flood risk listSS1 2QA: not on the flood risk listSS1 2QB: not on the flood risk listSS1 2QD: not on the flood risk listSS1 2QG: not on the flood risk listSS1 2QH: not on the flood risk listSS1 2QJ: not on the flood risk listSS1 2QN: not on the flood risk listSS1 2QQ: not on the flood risk listSS1 2QR: not on the flood risk listSS1 2QS: not on the flood risk listSS1 2QT: not on the flood risk listSS1 2QU: not on the flood risk listSS1 2QW: not on the flood risk listSS1 2QX: not on the flood risk listSS1 2QY: not on the flood risk listSS1 2QZ: not on the flood risk listSS1 2RA: not on the flood risk listSS1 2RB: not on the flood risk listSS1 2RD: not on the flood risk listSS1 2RE: not on the flood risk listSS1 2RF: not on the flood risk listSS1 2RG: not on the flood risk listSS1 2RH: not on the flood risk listSS1 2RJ: not on the flood risk listSS1 2RP: not on the flood risk listSS1 2RQ: not on the flood risk listSS1 2RR: not on the flood risk listSS1 2RS: not on the flood risk listSS1 2RT: not on the flood risk listSS1 2RU: not on the flood risk listSS1 2RW: not on the flood risk listSS1 2RX: not on the flood risk listSS1 2RY: not on the flood risk listSS1 2SA: not on the flood risk listSS1 2SB: not on the flood risk listSS1 2SD: not on the flood risk listSS1 2SE: not on the flood risk listSS1 2SF: not on the flood risk listSS1 2SG: not on the flood risk listSS1 2SH: not on the flood risk listSS1 2SJ: not on the flood risk listSS1 2SL: not on the flood risk listSS1 2SN: not on the flood risk listSS1 2SP: not on the flood risk listSS1 2SQ: not on the flood risk listSS1 2ST: not on the flood risk listSS1 2SU: not on the flood risk listSS1 2SW: not on the flood risk listSS1 2SZ: not on the flood risk listSS1 2TA: not on the flood risk listSS1 2TB: not on the flood risk listSS1 2TD: not on the flood risk listSS1 2TE: not on the flood risk listSS1 2TX: not on the flood risk listSS1 2TY: not on the flood risk listSS1 2TZ: not on the flood risk listSS1 2UB: not on the flood risk listSS1 2UD: not on the flood risk listSS1 2UE: not on the flood risk listSS1 2UF: not on the flood risk listSS1 2UG: not on the flood risk listSS1 2UH: not on the flood risk listSS1 2UJ: not on the flood risk listSS1 2UL: not on the flood risk listSS1 2UN: not on the flood risk listSS1 2UQ: not on the flood risk listSS1 2UR: not on the flood risk listSS1 2UT: not on the flood risk listSS1 2UW: not on the flood risk listSS1 2UX: not on the flood risk listSS1 2UY: not on the flood risk listSS1 2UZ: not on the flood risk listSS1 2WS: not on the flood risk listSS1 2WU: not on the flood risk listSS1 2XF: not on the flood risk listSS1 2XG: not on the flood risk listSS1 2XL: not on the flood risk listSS1 2XN: not on the flood risk listSS1 2XP: not on the flood risk listSS1 2XR: not on the flood risk listSS1 2XS: not on the flood risk listSS1 2XT: not on the flood risk listSS1 2XW: not on the flood risk listSS1 2XY: not on the flood risk listSS1 2YJ: not on the flood risk listSS1 2YX: not on the flood risk listSS1 3AE: not on the flood risk listSS1 3AP: not on the flood risk listSS1 3AR: not on the flood risk listSS1 3AS: not on the flood risk listSS1 3AU: not on the flood risk listSS1 3AX: not on the flood risk listSS1 3AY: not on the flood risk listSS1 3AZ: not on the flood risk listSS1 3BA: not on the flood risk listSS1 3BB: not on the flood risk listSS1 3BD: not on the flood risk listSS1 3BE: not on the flood risk listSS1 3BJ: not on the flood risk listSS1 3BL: not on the flood risk listSS1 3BQ: not on the flood risk listSS1 3BT: not on the flood risk listSS1 3DA: not on the flood risk listSS1 3DB: not on the flood risk listSS1 3DD: not on the flood risk listSS1 3DJ: not on the flood risk listSS1 3DP: not on the flood risk listSS1 3DR: not on the flood risk listSS1 3DS: not on the flood risk listSS1 3DT: not on the flood risk listSS1 3DU: not on the flood risk listSS1 3DW: not on the flood risk listSS1 3DY: not on the flood risk listSS1 3DZ: not on the flood risk listSS1 3EA: not on the flood risk listSS1 3EB: not on the flood risk listSS1 3ED: not on the flood risk listSS1 3EE: not on the flood risk listSS1 3EG: not on the flood risk listSS1 3EH: not on the flood risk listSS1 3EP: not on the flood risk listSS1 3EQ: not on the flood risk listSS1 3ES: not on the flood risk listSS1 3EU: not on the flood risk listSS1 3EX: not on the flood risk listSS1 3EY: not on the flood risk listSS1 3EZ: not on the flood risk listSS1 3FW: not on the flood risk listSS1 3HA: not on the flood risk listSS1 3HB: not on the flood risk listSS1 3HD: not on the flood risk listSS1 3HE: not on the flood risk listSS1 3HF: not on the flood risk listSS1 3HG: not on the flood risk listSS1 3HH: not on the flood risk listSS1 3HJ: not on the flood risk listSS1 3HQ: not on the flood risk listSS1 3HT: not on the flood risk listSS1 3HU: not on the flood risk listSS1 3HX: not on the flood risk listSS1 3HY: not on the flood risk listSS1 3HZ: not on the flood risk listSS1 3JA: not on the flood risk listSS1 3JB: not on the flood risk listSS1 3JD: not on the flood risk listSS1 3JE: not on the flood risk listSS1 3JF: not on the flood risk listSS1 3JG: not on the flood risk listSS1 3JH: not on the flood risk listSS1 3JJ: not on the flood risk listSS1 3JL: not on the flood risk listSS1 3JN: not on the flood risk listSS1 3JP: not on the flood risk listSS1 3JQ: not on the flood risk listSS1 3JS: not on the flood risk listSS1 3JT: not on the flood risk listSS1 3JU: not on the flood risk listSS1 3JW: not on the flood risk listSS1 3JX: not on the flood risk listSS1 3JZ: not on the flood risk listSS1 3LA: not on the flood risk listSS1 3LB: not on the flood risk listSS1 3LD: not on the flood risk listSS1 3LE: not on the flood risk listSS1 3LF: not on the flood risk listSS1 3LG: not on the flood risk listSS1 3LH: not on the flood risk listSS1 3LJ: not on the flood risk listSS1 3LL: not on the flood risk listSS1 3LN: not on the flood risk listSS1 3LQ: not on the flood risk listSS1 3LR: not on the flood risk listSS1 3LU: not on the flood risk listSS1 3LW: not on the flood risk listSS1 3LX: not on the flood risk listSS1 3NA: not on the flood risk listSS1 3NB: not on the flood risk listSS1 3ND: not on the flood risk listSS1 3NE: not on the flood risk listSS1 3NF: not on the flood risk listSS1 3NG: not on the flood risk listSS1 3NH: not on the flood risk listSS1 3NJ: not on the flood risk listSS1 3NL: not on the flood risk listSS1 3NN: not on the flood risk listSS1 3NP: not on the flood risk listSS1 3NQ: not on the flood risk listSS1 3NR: not on the flood risk listSS1 3NS: not on the flood risk listSS1 3NT: not on the flood risk listSS1 3NU: not on the flood risk listSS1 3NW: not on the flood risk listSS1 3NX: not on the flood risk listSS1 3NY: not on the flood risk listSS1 3NZ: not on the flood risk listSS1 3PA: not on the flood risk listSS1 3PB: not on the flood risk listSS1 3PD: not on the flood risk listSS1 3PE: not on the flood risk listSS1 3PF: not on the flood risk listSS1 3PG: not on the flood risk listSS1 3PH: not on the flood risk listSS1 3PJ: not on the flood risk listSS1 3PL: not on the flood risk listSS1 3PN: not on the flood risk listSS1 3PP: not on the flood risk listSS1 3PQ: not on the flood risk listSS1 3PR: not on the flood risk listSS1 3PS: not on the flood risk listSS1 3PT: not on the flood risk listSS1 3PU: not on the flood risk listSS1 3PW: not on the flood risk listSS1 3PX: not on the flood risk listSS1 3PY: not on the flood risk listSS1 3PZ: not on the flood risk listSS1 3QA: not on the flood risk listSS1 3QB: not on the flood risk listSS1 3QD: not on the flood risk listSS1 3QE: not on the flood risk listSS1 3QF: not on the flood risk listSS1 3QG: not on the flood risk listSS1 3QH: not on the flood risk listSS1 3QP: not on the flood risk listSS1 3QQ: not on the flood risk listSS1 3QR: not on the flood risk listSS1 3QS: not on the flood risk listSS1 3QT: not on the flood risk listSS1 3QU: not on the flood risk listSS1 3QX: not on the flood risk listSS1 3QY: not on the flood risk listSS1 3QZ: not on the flood risk listSS1 3RA: not on the flood risk listSS1 3RB: not on the flood risk listSS1 3RD: not on the flood risk listSS1 3RE: not on the flood risk listSS1 3RG: not on the flood risk listSS1 3RJ: not on the flood risk listSS1 3RL: not on the flood risk listSS1 3RN: not on the flood risk listSS1 3RP: not on the flood risk listSS1 3RQ: not on the flood risk listSS1 3RR: not on the flood risk listSS1 3RS: not on the flood risk listSS1 3RW: not on the flood risk listSS1 3SB: not on the flood risk listSS1 3SD: not on the flood risk listSS1 3SE: not on the flood risk listSS1 3SF: not on the flood risk listSS1 3SG: not on the flood risk listSS1 3SH: not on the flood risk listSS1 3SJ: not on the flood risk listSS1 3SL: not on the flood risk listSS1 3SN: not on the flood risk listSS1 3SP: not on the flood risk listSS1 3SQ: not on the flood risk listSS1 3SR: not on the flood risk listSS1 3SS: not on the flood risk listSS1 3ST: not on the flood risk listSS1 3SU: not on the flood risk listSS1 3SW: not on the flood risk listSS1 3SX: not on the flood risk listSS1 3SY: not on the flood risk listSS1 3SZ: not on the flood risk listSS1 3TA: not on the flood risk listSS1 3TS: not on the flood risk listSS1 3TT: not on the flood risk listSS1 3TX: not on the flood risk listSS1 3TY: not on the flood risk listSS1 3TZ: not on the flood risk listSS1 3UE: not on the flood risk listSS1 9ER: not on the flood risk listSS1 2AF: very low flood risk onlySS1 2AG: very low flood risk onlySS1 2EW: very low flood risk onlySS1 2HS: very low flood risk onlySS1 2SY: very low flood risk onlySS1 2TF: very low flood risk onlySS1 2TJ: very low flood risk onlySS1 2TP: very low flood risk onlySS1 2TS: very low flood risk onlySS1 2TU: very low flood risk onlySS1 2UA: very low flood risk onlySS1 2XA: very low flood risk onlySS1 2XB: very low flood risk onlySS1 2XD: very low flood risk onlySS1 2XE: very low flood risk onlySS1 2XH: very low flood risk onlySS1 2XJ: very low flood risk onlySS1 2XQ: very low flood risk onlySS1 2XU: very low flood risk onlySS1 2ZG: very low flood risk onlySS1 2ZS: very low flood risk onlySS1 3AJ: very low flood risk onlySS1 3AL: very low flood risk onlySS1 3AQ: very low flood risk onlySS1 3AT: very low flood risk onlySS1 3BH: very low flood risk onlySS1 3BN: very low flood risk onlySS1 3BP: very low flood risk onlySS1 3BS: very low flood risk onlySS1 3BW: very low flood risk onlySS1 3BX: very low flood risk onlySS1 3DE: very low flood risk onlySS1 3DF: very low flood risk onlySS1 3DG: very low flood risk onlySS1 3DH: very low flood risk onlySS1 3DN: very low flood risk onlySS1 3DQ: very low flood risk onlySS1 3EF: very low flood risk onlySS1 3EJ: very low flood risk onlySS1 3EL: very low flood risk onlySS1 2AE: low flood risk at worstSS1 2AQ: low flood risk at worstSS1 2EL: low flood risk at worstSS1 2EN: low flood risk at worstSS1 2SR: low flood risk at worstSS1 2SX: low flood risk at worstSS1 2TH: low flood risk at worstSS1 2TQ: low flood risk at worstSS1 2TR: low flood risk at worstSS1 2TW: low flood risk at worstSS1 2YS: low flood risk at worstSS1 2YU: low flood risk at worstSS1 2YW: low flood risk at worstSS1 2EJ: medium flood risk at worstSS1 3HL: medium flood risk at worstSS1 1DT: high flood riskSS1 1EE: high flood riskSS1 2YT: high flood riskSS1 2ER: high flood riskSS1 2ES: high flood riskSS1 2YR: high flood riskSS1 2TL: high flood riskSS1 2TN: high flood riskSS1 2YB: high flood riskSS1 2YA: high flood riskSS1 2YD: high flood riskSS1 2YE: high flood riskSS1 2YF: high flood riskSS1 2YG: high flood riskSS1 2YH: high flood riskSS1 2YL: high flood riskSS1 2YN: high flood riskSS1 2YP: high flood riskSS1 2YQ: high flood riskSS1 3AA: high flood riskSS1 3AD: high flood riskSS1 3AG: high flood riskSS1 3AH: high flood riskSS1 3AN: high flood riskSS1 3AW: high flood riskSS1 3BG: high flood risk Southend-on-Sea 19 postcodes at high or medium risk, outlined: this goes to SS1 2YH, the one with most homes and businesses at high risk19 postcodes at high or medium risk Map of every postcode in SS1, by flood risk Of the 692 postcodes in SS1 that ONS places, 26 have a home or business at high risk, 2 are at medium risk at worst, 13 are at low risk at worst, 42 are at very low risk only and 609 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 19 postcodes at high or medium risk. Places named: Southend-on-Sea. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1159 Southend-on-Sea 19 postcodes at high or medium risk, outlined: this goes to SS1 2YH, the one with most homes and businesses at high risk19 postcodes at high or medium risk
  • A home or business at high risk: 26
  • At medium risk at worst: 2
  • At low risk at worst: 13
  • At very low risk only: 42
  • Not on the at-risk list: 609
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 692 postcodes in SS1 that ONS places, 26 have a home or business at high risk, 2 are at medium risk at worst, 13 are at low risk at worst, 42 are at very low risk only and 609 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 51.5375, longitude 0.7313. 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

26 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.

SS1 2YH54 at high riskSS1 2YG20 at high riskSS1 2ES12 at high riskSS1 2YP11 at high riskSS1 3AW11 at high riskSS1 1EE10 at high riskSS1 2YT10 at high riskSS1 2TN7 at high riskSS1 2YB7 at high riskSS1 2ER6 at high riskSS1 3AN6 at high riskSS1 2YA6 at high risk

Where the postcodes at high or medium risk lie together

  • 19 postcodes at high or medium risk, outlined on the map. SS1 2YH, is the one with most homes and businesses at high risk.

What broadband can you get in SS1?

Ofcom reports on 602 of the 692 postcodes in SS1. At 529 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit529 of 602
Postcodes where every home can get superfast562 of 602

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 SS1 at risk of flooding?

83 of the 692 postcodes in SS1 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 224 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 83 of 692 postcodes High: 208Medium: 16Low: 252Very low: 1,291

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 SS1?

Homes in SS1 sold for a typical £360,000 in the 12 months to August 2026, across 279 sales, up 3.7% on the 12 months before, HM Land Registry's figures show.

£360,000 typical price, the 12 months to August 2026
£347,000 12 months to August 2025
▲ up 3.7% on the 12 months before
  • Detached £680,000 67 sales
  • Semi-detached £480,000 53 sales
  • Terraced £315,000 53 sales
  • Flat or maisonette £219,000 106 sales

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

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

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

Postcodes in SS1

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

SS1 1131 postcodesSS1 2269 postcodesSS1 3214 postcodesSS1 978 postcodes
UK postcode format explained

Places in SS1

Towns and villages with postcodes in SS1, and how many each has here.

Southend-on-Sea postcodes,690

Who covers SS1

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

  • Southend East and Rochford692

Police force areas

  • Essex692

Next to SS1

SS0 postcode district SS2 postcode district All SS districts Southend-on-Sea postcodes

"Next to" is by number: the districts before and after SS1 in the SS area.

Check a postcode

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