W4 postcode district: Hounslow and around

W4 is a postcode district in England, with 1,024 postcodes in use in 6 sectors. It has postcodes in Hounslow, Ealing and Hammersmith and Fulham. It is split between 3 councils: Hounslow (776 postcodes), Ealing (245) and Hammersmith and Fulham (3).

Postcodes in use
1,024
Sectors
6
Councils
3 councils
Places
3 places

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

Every postcode in W4, by flood risk

Map of every postcode in W4, by flood risk Of the 1,024 postcodes in W4 that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst, 190 are at very low risk only and 822 are not on the Environment Agency's at-risk list. Places named: Chiswick Gunnersbury, Chiswick Homefields. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A316A205 W4 1AA: not on the flood risk listW4 1AB: not on the flood risk listW4 1AD: not on the flood risk listW4 1AE: not on the flood risk listW4 1AF: not on the flood risk listW4 1AG: not on the flood risk listW4 1AH: not on the flood risk listW4 1AJ: not on the flood risk listW4 1AL: not on the flood risk listW4 1AN: not on the flood risk listW4 1AP: not on the flood risk listW4 1AQ: not on the flood risk listW4 1AR: not on the flood risk listW4 1AS: not on the flood risk listW4 1AT: not on the flood risk listW4 1AU: not on the flood risk listW4 1AW: not on the flood risk listW4 1AX: not on the flood risk listW4 1AY: not on the flood risk listW4 1AZ: not on the flood risk listW4 1BA: not on the flood risk listW4 1BB: not on the flood risk listW4 1BD: not on the flood risk listW4 1BH: not on the flood risk listW4 1BJ: not on the flood risk listW4 1BL: not on the flood risk listW4 1BN: not on the flood risk listW4 1BP: not on the flood risk listW4 1BS: not on the flood risk listW4 1BU: not on the flood risk listW4 1BW: not on the flood risk listW4 1BX: not on the flood risk listW4 1BY: not on the flood risk listW4 1BZ: not on the flood risk listW4 1DA: not on the flood risk listW4 1DB: not on the flood risk listW4 1DD: not on the flood risk listW4 1DE: not on the flood risk listW4 1DF: not on the flood risk listW4 1DG: not on the flood risk listW4 1DH: not on the flood risk listW4 1DJ: not on the flood risk listW4 1DL: not on the flood risk listW4 1DP: not on the flood risk listW4 1DQ: not on the flood risk listW4 1DR: not on the flood risk listW4 1DS: not on the flood risk listW4 1DT: not on the flood risk listW4 1DU: not on the flood risk listW4 1DX: not on the flood risk listW4 1DY: not on the flood risk listW4 1DZ: not on the flood risk listW4 1EA: not on the flood risk listW4 1EB: not on the flood risk listW4 1ED: not on the flood risk listW4 1EE: not on the flood risk listW4 1EF: not on the flood risk listW4 1EG: not on the flood risk listW4 1EL: not on the flood risk listW4 1EN: not on the flood risk listW4 1EP: not on the flood risk listW4 1EQ: not on the flood risk listW4 1ER: not on the flood risk listW4 1ET: not on the flood risk listW4 1EU: not on the flood risk listW4 1EW: not on the flood risk listW4 1EX: not on the flood risk listW4 1EY: not on the flood risk listW4 1GX: not on the flood risk listW4 1HA: not on the flood risk listW4 1HB: not on the flood risk listW4 1HD: not on the flood risk listW4 1HE: not on the flood risk listW4 1HF: not on the flood risk listW4 1HG: not on the flood risk listW4 1HJ: not on the flood risk listW4 1HL: not on the flood risk listW4 1HN: not on the flood risk listW4 1HP: not on the flood risk listW4 1HQ: not on the flood risk listW4 1HR: not on the flood risk listW4 1HS: not on the flood risk listW4 1HT: not on the flood risk listW4 1HU: not on the flood risk listW4 1HW: not on the flood risk listW4 1HX: not on the flood risk listW4 1JA: not on the flood risk listW4 1JB: not on the flood risk listW4 1JD: not on the flood risk listW4 1JE: not on the flood risk listW4 1JF: not on the flood risk listW4 1JG: not on the flood risk listW4 1JH: not on the flood risk listW4 1JJ: not on the flood risk listW4 1JN: not on the flood risk listW4 1JQ: not on the flood risk listW4 1JR: not on the flood risk listW4 1JS: not on the flood risk listW4 1JT: not on the flood risk listW4 1JU: not on the flood risk listW4 1JW: not on the flood risk listW4 1JX: not on the flood risk listW4 1JY: not on the flood risk listW4 1JZ: not on the flood risk listW4 1LA: not on the flood risk listW4 1LB: not on the flood risk listW4 1LD: not on the flood risk listW4 1LH: not on the flood risk listW4 1LJ: not on the flood risk listW4 1LL: not on the flood risk listW4 1LR: not on the flood risk listW4 1LS: not on the flood risk listW4 1LU: not on the flood risk listW4 1LW: not on the flood risk listW4 1LY: not on the flood risk listW4 1NA: not on the flood risk listW4 1NB: not on the flood risk listW4 1ND: not on the flood risk listW4 1NE: not on the flood risk listW4 1NF: not on the flood risk listW4 1NG: not on the flood risk listW4 1NH: not on the flood risk listW4 1NJ: not on the flood risk listW4 1NL: not on the flood risk listW4 1NN: not on the flood risk listW4 1NP: not on the flood risk listW4 1NQ: not on the flood risk listW4 1NU: not on the flood risk listW4 1NX: not on the flood risk listW4 1NY: not on the flood risk listW4 1PD: not on the flood risk listW4 1PE: not on the flood risk listW4 1PF: not on the flood risk listW4 1PG: not on the flood risk listW4 1PJ: not on the flood risk listW4 1PL: not on the flood risk listW4 1PN: not on the flood risk listW4 1PP: not on the flood risk listW4 1PQ: not on the flood risk listW4 1PR: not on the flood risk listW4 1PU: not on the flood risk listW4 1PW: not on the flood risk listW4 1QE: not on the flood risk listW4 1QF: not on the flood risk listW4 1QG: not on the flood risk listW4 1QH: not on the flood risk listW4 1QN: not on the flood risk listW4 1QP: not on the flood risk listW4 1QQ: not on the flood risk listW4 1QU: not on the flood risk listW4 1QZ: not on the flood risk listW4 1RG: not on the flood risk listW4 1RJ: not on the flood risk listW4 1RN: not on the flood risk listW4 1RP: not on the flood risk listW4 1RR: not on the flood risk listW4 1RS: not on the flood risk listW4 1RT: not on the flood risk listW4 1RW: not on the flood risk listW4 1RX: not on the flood risk listW4 1RZ: not on the flood risk listW4 1SA: not on the flood risk listW4 1SD: not on the flood risk listW4 1SE: not on the flood risk listW4 1SF: not on the flood risk listW4 1SH: not on the flood risk listW4 1SN: not on the flood risk listW4 1SP: not on the flood risk listW4 1SY: not on the flood risk listW4 1SZ: not on the flood risk listW4 1TA: not on the flood risk listW4 1TD: not on the flood risk listW4 1TF: not on the flood risk listW4 1TH: not on the flood risk listW4 1TN: not on the flood risk listW4 1TQ: not on the flood risk listW4 1TR: not on the flood risk listW4 1TT: not on the flood risk listW4 1TU: not on the flood risk listW4 1TW: not on the flood risk listW4 1TX: not on the flood risk listW4 1TY: not on the flood risk listW4 1TZ: not on the flood risk listW4 1UA: not on the flood risk listW4 1UB: not on the flood risk listW4 1UD: not on the flood risk listW4 1UE: not on the flood risk listW4 1UF: not on the flood risk listW4 1UH: not on the flood risk listW4 1YA: not on the flood risk listW4 2AA: not on the flood risk listW4 2AB: not on the flood risk listW4 2AE: not on the flood risk listW4 2AF: not on the flood risk listW4 2AG: not on the flood risk listW4 2AH: not on the flood risk listW4 2AJ: not on the flood risk listW4 2AL: not on the flood risk listW4 2AN: not on the flood risk listW4 2AP: not on the flood risk listW4 2AQ: not on the flood risk listW4 2AR: not on the flood risk listW4 2AS: not on the flood risk listW4 2AT: not on the flood risk listW4 2AU: not on the flood risk listW4 2AW: not on the flood risk listW4 2AX: not on the flood risk listW4 2AY: not on the flood risk listW4 2AZ: not on the flood risk listW4 2BA: not on the flood risk listW4 2BB: not on the flood risk listW4 2BD: not on the flood risk listW4 2BE: not on the flood risk listW4 2BG: not on the flood risk listW4 2BH: not on the flood risk listW4 2BJ: not on the flood risk listW4 2BL: not on the flood risk listW4 2BN: not on the flood risk listW4 2BP: not on the flood risk listW4 2BQ: not on the flood risk listW4 2BS: not on the flood risk listW4 2BT: not on the flood risk listW4 2BU: not on the flood risk listW4 2BW: not on the flood risk listW4 2BX: not on the flood risk listW4 2BY: not on the flood risk listW4 2BZ: not on the flood risk listW4 2DA: not on the flood risk listW4 2DB: not on the flood risk listW4 2DD: not on the flood risk listW4 2DE: not on the flood risk listW4 2DF: not on the flood risk listW4 2DG: not on the flood risk listW4 2DH: not on the flood risk listW4 2DR: not on the flood risk listW4 2DS: not on the flood risk listW4 2DT: not on the flood risk listW4 2DU: not on the flood risk listW4 2DW: not on the flood risk listW4 2DY: not on the flood risk listW4 2DZ: not on the flood risk listW4 2ED: not on the flood risk listW4 2EE: not on the flood risk listW4 2EF: not on the flood risk listW4 2EG: not on the flood risk listW4 2EH: not on the flood risk listW4 2EJ: not on the flood risk listW4 2EL: not on the flood risk listW4 2EN: not on the flood risk listW4 2EP: not on the flood risk listW4 2EQ: not on the flood risk listW4 2ER: not on the flood risk listW4 2EU: not on the flood risk listW4 2EW: not on the flood risk listW4 2EX: not on the flood risk listW4 2EY: not on the flood risk listW4 2EZ: not on the flood risk listW4 2HA: not on the flood risk listW4 2HB: not on the flood risk listW4 2HD: not on the flood risk listW4 2HE: not on the flood risk listW4 2HF: not on the flood risk listW4 2HG: not on the flood risk listW4 2HH: not on the flood risk listW4 2HJ: not on the flood risk listW4 2HL: not on the flood risk listW4 2HN: not on the flood risk listW4 2HP: not on the flood risk listW4 2HQ: not on the flood risk listW4 2HR: not on the flood risk listW4 2HS: not on the flood risk listW4 2HT: not on the flood risk listW4 2HU: not on the flood risk listW4 2HW: not on the flood risk listW4 2HX: not on the flood risk listW4 2HY: not on the flood risk listW4 2JD: not on the flood risk listW4 2JE: not on the flood risk listW4 2JF: not on the flood risk listW4 2JG: not on the flood risk listW4 2JH: not on the flood risk listW4 2JJ: not on the flood risk listW4 2JL: not on the flood risk listW4 2JN: not on the flood risk listW4 2JP: not on the flood risk listW4 2JQ: not on the flood risk listW4 2JR: not on the flood risk listW4 2JS: not on the flood risk listW4 2JT: not on the flood risk listW4 2JU: not on the flood risk listW4 2JW: not on the flood risk listW4 2JX: not on the flood risk listW4 2JY: not on the flood risk listW4 2JZ: not on the flood risk listW4 2LA: not on the flood risk listW4 2LB: not on the flood risk listW4 2LD: not on the flood risk listW4 2LH: not on the flood risk listW4 2LJ: not on the flood risk listW4 2LL: not on the flood risk listW4 2LN: not on the flood risk listW4 2LP: not on the flood risk listW4 2LR: not on the flood risk listW4 2LS: not on the flood risk listW4 2LT: not on the flood risk listW4 2LU: not on the flood risk listW4 2LW: not on the flood risk listW4 2NB: not on the flood risk listW4 2NN: not on the flood risk listW4 2NW: not on the flood risk listW4 2PA: not on the flood risk listW4 2PD: not on the flood risk listW4 2PT: not on the flood risk listW4 2PX: not on the flood risk listW4 2PY: not on the flood risk listW4 2PZ: not on the flood risk listW4 2QA: not on the flood risk listW4 2QE: not on the flood risk listW4 2QG: not on the flood risk listW4 2QJ: not on the flood risk listW4 2QL: not on the flood risk listW4 2QN: not on the flood risk listW4 2QR: not on the flood risk listW4 2QS: not on the flood risk listW4 2QT: not on the flood risk listW4 2QU: not on the flood risk listW4 2QX: not on the flood risk listW4 2RH: not on the flood risk listW4 2RN: not on the flood risk listW4 2RP: not on the flood risk listW4 2RR: not on the flood risk listW4 2SJ: not on the flood risk listW4 2TH: not on the flood risk listW4 3AA: not on the flood risk listW4 3AD: not on the flood risk listW4 3AE: not on the flood risk listW4 3AF: not on the flood risk listW4 3AG: not on the flood risk listW4 3AH: not on the flood risk listW4 3AL: not on the flood risk listW4 3AP: not on the flood risk listW4 3AQ: not on the flood risk listW4 3AR: not on the flood risk listW4 3AS: not on the flood risk listW4 3AT: not on the flood risk listW4 3AU: not on the flood risk listW4 3AW: not on the flood risk listW4 3AY: not on the flood risk listW4 3AZ: not on the flood risk listW4 3BB: not on the flood risk listW4 3BD: not on the flood risk listW4 3BE: not on the flood risk listW4 3BF: not on the flood risk listW4 3BG: not on the flood risk listW4 3BH: not on the flood risk listW4 3BJ: not on the flood risk listW4 3BL: not on the flood risk listW4 3BN: not on the flood risk listW4 3BP: not on the flood risk listW4 3BQ: not on the flood risk listW4 3BS: not on the flood risk listW4 3BT: not on the flood risk listW4 3BU: not on the flood risk listW4 3BW: not on the flood risk listW4 3DA: not on the flood risk listW4 3DB: not on the flood risk listW4 3DD: not on the flood risk listW4 3DE: not on the flood risk listW4 3DH: not on the flood risk listW4 3DJ: not on the flood risk listW4 3DL: not on the flood risk listW4 3DN: not on the flood risk listW4 3DU: not on the flood risk listW4 3EA: not on the flood risk listW4 3ED: not on the flood risk listW4 3EH: not on the flood risk listW4 3EL: not on the flood risk listW4 3EP: not on the flood risk listW4 3EW: not on the flood risk listW4 3EX: not on the flood risk listW4 3HD: not on the flood risk listW4 3HJ: not on the flood risk listW4 3HN: not on the flood risk listW4 3HP: not on the flood risk listW4 3HR: not on the flood risk listW4 3HS: not on the flood risk listW4 3HT: not on the flood risk listW4 3HU: not on the flood risk listW4 3HW: not on the flood risk listW4 3HX: not on the flood risk listW4 3JD: not on the flood risk listW4 3JE: not on the flood risk listW4 3JG: not on the flood risk listW4 3JH: not on the flood risk listW4 3JJ: not on the flood risk listW4 3JN: not on the flood risk listW4 3JQ: not on the flood risk listW4 3JU: not on the flood risk listW4 3JX: not on the flood risk listW4 3LA: not on the flood risk listW4 3LB: not on the flood risk listW4 3LD: not on the flood risk listW4 3LQ: not on the flood risk listW4 3LW: not on the flood risk listW4 3NG: not on the flood risk listW4 3NH: not on the flood risk listW4 3NJ: not on the flood risk listW4 3NL: not on the flood risk listW4 3NN: not on the flood risk listW4 3NQ: not on the flood risk listW4 3NR: not on the flood risk listW4 3NS: not on the flood risk listW4 3NT: not on the flood risk listW4 3NX: not on the flood risk listW4 3PG: not on the flood risk listW4 3PR: not on the flood risk listW4 3PT: not on the flood risk listW4 3PW: not on the flood risk listW4 3RE: not on the flood risk listW4 3RJ: not on the flood risk listW4 3RN: not on the flood risk listW4 3RQ: not on the flood risk listW4 3RR: not on the flood risk listW4 3RT: not on the flood risk listW4 3RU: not on the flood risk listW4 3RY: not on the flood risk listW4 3RZ: not on the flood risk listW4 3SA: not on the flood risk listW4 3SB: not on the flood risk listW4 3SD: not on the flood risk listW4 3SE: not on the flood risk listW4 3SF: not on the flood risk listW4 3SG: not on the flood risk listW4 3SH: not on the flood risk listW4 3SQ: not on the flood risk listW4 3TA: not on the flood risk listW4 3TH: not on the flood risk listW4 3TL: not on the flood risk listW4 3TQ: not on the flood risk listW4 3TT: not on the flood risk listW4 3TX: not on the flood risk listW4 3UA: not on the flood risk listW4 3UB: not on the flood risk listW4 3UE: not on the flood risk listW4 3UF: not on the flood risk listW4 3UG: not on the flood risk listW4 3UQ: not on the flood risk listW4 4AA: not on the flood risk listW4 4AB: not on the flood risk listW4 4AD: not on the flood risk listW4 4AG: not on the flood risk listW4 4AH: not on the flood risk listW4 4AJ: not on the flood risk listW4 4AN: not on the flood risk listW4 4AR: not on the flood risk listW4 4AU: not on the flood risk listW4 4AZ: not on the flood risk listW4 4BA: not on the flood risk listW4 4BD: not on the flood risk listW4 4BE: not on the flood risk listW4 4BF: not on the flood risk listW4 4BG: not on the flood risk listW4 4BJ: not on the flood risk listW4 4BL: not on the flood risk listW4 4BN: not on the flood risk listW4 4BQ: not on the flood risk listW4 4BS: not on the flood risk listW4 4BT: not on the flood risk listW4 4BU: not on the flood risk listW4 4BX: not on the flood risk listW4 4BZ: not on the flood risk listW4 4DA: not on the flood risk listW4 4DB: not on the flood risk listW4 4DD: not on the flood risk listW4 4DE: not on the flood risk listW4 4DF: not on the flood risk listW4 4DG: not on the flood risk listW4 4DH: not on the flood risk listW4 4DJ: not on the flood risk listW4 4DL: not on the flood risk listW4 4DN: not on the flood risk listW4 4DP: not on the flood risk listW4 4DQ: not on the flood risk listW4 4DR: not on the flood risk listW4 4DS: not on the flood risk listW4 4DT: not on the flood risk listW4 4DU: not on the flood risk listW4 4DW: not on the flood risk listW4 4DX: not on the flood risk listW4 4EA: not on the flood risk listW4 4EB: not on the flood risk listW4 4ED: not on the flood risk listW4 4EE: not on the flood risk listW4 4EF: not on the flood risk listW4 4EG: not on the flood risk listW4 4EH: not on the flood risk listW4 4EJ: not on the flood risk listW4 4EL: not on the flood risk listW4 4EN: not on the flood risk listW4 4EQ: not on the flood risk listW4 4ET: not on the flood risk listW4 4EU: not on the flood risk listW4 4EW: not on the flood risk listW4 4EY: not on the flood risk listW4 4EZ: not on the flood risk listW4 4HA: not on the flood risk listW4 4HB: not on the flood risk listW4 4HD: not on the flood risk listW4 4HE: not on the flood risk listW4 4HF: not on the flood risk listW4 4HG: not on the flood risk listW4 4HH: not on the flood risk listW4 4HJ: not on the flood risk listW4 4HS: not on the flood risk listW4 4HT: not on the flood risk listW4 4JA: not on the flood risk listW4 4JB: not on the flood risk listW4 4JD: not on the flood risk listW4 4JE: not on the flood risk listW4 4JN: not on the flood risk listW4 4JP: not on the flood risk listW4 4JQ: not on the flood risk listW4 4JR: not on the flood risk listW4 4JS: not on the flood risk listW4 4JT: not on the flood risk listW4 4JU: not on the flood risk listW4 4JW: not on the flood risk listW4 4JX: not on the flood risk listW4 4JY: not on the flood risk listW4 4LA: not on the flood risk listW4 4LB: not on the flood risk listW4 4LD: not on the flood risk listW4 4LE: not on the flood risk listW4 4LG: not on the flood risk listW4 4LP: not on the flood risk listW4 4LQ: not on the flood risk listW4 4LR: not on the flood risk listW4 4LS: not on the flood risk listW4 4LT: not on the flood risk listW4 4LZ: not on the flood risk listW4 4NA: not on the flood risk listW4 4NB: not on the flood risk listW4 4ND: not on the flood risk listW4 4NE: not on the flood risk listW4 4NF: not on the flood risk listW4 4NG: not on the flood risk listW4 4NH: not on the flood risk listW4 4NJ: not on the flood risk listW4 4NL: not on the flood risk listW4 4NN: not on the flood risk listW4 4NP: not on the flood risk listW4 4NR: not on the flood risk listW4 4NS: not on the flood risk listW4 4NT: not on the flood risk listW4 4NU: not on the flood risk listW4 4NX: not on the flood risk listW4 4NY: not on the flood risk listW4 4PA: not on the flood risk listW4 4PB: not on the flood risk listW4 4PD: not on the flood risk listW4 4PH: not on the flood risk listW4 4PU: not on the flood risk listW4 4QE: not on the flood risk listW4 4QF: not on the flood risk listW4 4QG: not on the flood risk listW4 4QH: not on the flood risk listW4 4QJ: not on the flood risk listW4 4QL: not on the flood risk listW4 4QN: not on the flood risk listW4 4QP: not on the flood risk listW4 4QQ: not on the flood risk listW4 4QR: not on the flood risk listW4 4QS: not on the flood risk listW4 4QT: not on the flood risk listW4 4QU: not on the flood risk listW4 4QX: not on the flood risk listW4 4QY: not on the flood risk listW4 5AA: not on the flood risk listW4 5AB: not on the flood risk listW4 5AD: not on the flood risk listW4 5AE: not on the flood risk listW4 5AF: not on the flood risk listW4 5AG: not on the flood risk listW4 5AH: not on the flood risk listW4 5AJ: not on the flood risk listW4 5AL: not on the flood risk listW4 5AN: not on the flood risk listW4 5AP: not on the flood risk listW4 5AQ: not on the flood risk listW4 5AR: not on the flood risk listW4 5AS: not on the flood risk listW4 5AT: not on the flood risk listW4 5AU: not on the flood risk listW4 5AW: not on the flood risk listW4 5AX: not on the flood risk listW4 5AY: not on the flood risk listW4 5AZ: not on the flood risk listW4 5BA: not on the flood risk listW4 5BB: not on the flood risk listW4 5BD: not on the flood risk listW4 5BF: not on the flood risk listW4 5BG: not on the flood risk listW4 5BH: not on the flood risk listW4 5BJ: not on the flood risk listW4 5BL: not on the flood risk listW4 5BN: not on the flood risk listW4 5BP: not on the flood risk listW4 5BS: not on the flood risk listW4 5BT: not on the flood risk listW4 5BU: not on the flood risk listW4 5BW: not on the flood risk listW4 5DA: not on the flood risk listW4 5DB: not on the flood risk listW4 5DD: not on the flood risk listW4 5DE: not on the flood risk listW4 5DF: not on the flood risk listW4 5DG: not on the flood risk listW4 5DH: not on the flood risk listW4 5DJ: not on the flood risk listW4 5DL: not on the flood risk listW4 5DN: not on the flood risk listW4 5DP: not on the flood risk listW4 5DQ: not on the flood risk listW4 5DR: not on the flood risk listW4 5DS: not on the flood risk listW4 5DT: not on the flood risk listW4 5DU: not on the flood risk listW4 5DW: not on the flood risk listW4 5DX: not on the flood risk listW4 5DY: not on the flood risk listW4 5EA: not on the flood risk listW4 5EB: not on the flood risk listW4 5ED: not on the flood risk listW4 5EE: not on the flood risk listW4 5EF: not on the flood risk listW4 5EG: not on the flood risk listW4 5EH: not on the flood risk listW4 5EJ: not on the flood risk listW4 5EL: not on the flood risk listW4 5EN: not on the flood risk listW4 5EP: not on the flood risk listW4 5EQ: not on the flood risk listW4 5ER: not on the flood risk listW4 5ES: not on the flood risk listW4 5ET: not on the flood risk listW4 5EU: not on the flood risk listW4 5EW: not on the flood risk listW4 5EY: not on the flood risk listW4 5EZ: not on the flood risk listW4 5FU: not on the flood risk listW4 5GW: not on the flood risk listW4 5HA: not on the flood risk listW4 5HB: not on the flood risk listW4 5HE: not on the flood risk listW4 5HG: not on the flood risk listW4 5HH: not on the flood risk listW4 5HJ: not on the flood risk listW4 5HL: not on the flood risk listW4 5HN: not on the flood risk listW4 5HP: not on the flood risk listW4 5HQ: not on the flood risk listW4 5HR: not on the flood risk listW4 5HS: not on the flood risk listW4 5HT: not on the flood risk listW4 5HU: not on the flood risk listW4 5HW: not on the flood risk listW4 5HY: not on the flood risk listW4 5HZ: not on the flood risk listW4 5JA: not on the flood risk listW4 5JB: not on the flood risk listW4 5JD: not on the flood risk listW4 5JE: not on the flood risk listW4 5JF: not on the flood risk listW4 5JH: not on the flood risk listW4 5JJ: not on the flood risk listW4 5JL: not on the flood risk listW4 5JN: not on the flood risk listW4 5JP: not on the flood risk listW4 5JQ: not on the flood risk listW4 5JR: not on the flood risk listW4 5JS: not on the flood risk listW4 5JT: not on the flood risk listW4 5JU: not on the flood risk listW4 5LA: not on the flood risk listW4 5LB: not on the flood risk listW4 5LD: not on the flood risk listW4 5LE: not on the flood risk listW4 5LF: not on the flood risk listW4 5LG: not on the flood risk listW4 5LH: not on the flood risk listW4 5LJ: not on the flood risk listW4 5LL: not on the flood risk listW4 5LN: not on the flood risk listW4 5LP: not on the flood risk listW4 5LR: not on the flood risk listW4 5LS: not on the flood risk listW4 5LT: not on the flood risk listW4 5LU: not on the flood risk listW4 5LW: not on the flood risk listW4 5LX: not on the flood risk listW4 5LY: not on the flood risk listW4 5LZ: not on the flood risk listW4 5NB: not on the flood risk listW4 5NG: not on the flood risk listW4 5NH: not on the flood risk listW4 5NJ: not on the flood risk listW4 5NL: not on the flood risk listW4 5NN: not on the flood risk listW4 5NP: not on the flood risk listW4 5NQ: not on the flood risk listW4 5NR: not on the flood risk listW4 5NS: not on the flood risk listW4 5NT: not on the flood risk listW4 5NW: not on the flood risk listW4 5NY: not on the flood risk listW4 5NZ: not on the flood risk listW4 5PR: not on the flood risk listW4 5PS: not on the flood risk listW4 5PY: not on the flood risk listW4 5QB: not on the flood risk listW4 5QJ: not on the flood risk listW4 5QL: not on the flood risk listW4 5RA: not on the flood risk listW4 5RB: not on the flood risk listW4 5RE: not on the flood risk listW4 5RF: not on the flood risk listW4 5RG: not on the flood risk listW4 5RH: not on the flood risk listW4 5RL: not on the flood risk listW4 5RP: not on the flood risk listW4 5RR: not on the flood risk listW4 5RT: not on the flood risk listW4 5RU: not on the flood risk listW4 5RY: not on the flood risk listW4 5SB: not on the flood risk listW4 5SD: not on the flood risk listW4 5SE: not on the flood risk listW4 5SF: not on the flood risk listW4 5SN: not on the flood risk listW4 5SP: not on the flood risk listW4 5SR: not on the flood risk listW4 5SS: not on the flood risk listW4 5ST: not on the flood risk listW4 5SU: not on the flood risk listW4 5SW: not on the flood risk listW4 5SX: not on the flood risk listW4 5SY: not on the flood risk listW4 5SZ: not on the flood risk listW4 5TA: not on the flood risk listW4 5TD: not on the flood risk listW4 5TF: not on the flood risk listW4 5TG: not on the flood risk listW4 5TH: not on the flood risk listW4 5TT: not on the flood risk listW4 5TZ: not on the flood risk listW4 5UD: not on the flood risk listW4 5UF: not on the flood risk listW4 5UG: not on the flood risk listW4 5UH: not on the flood risk listW4 5UJ: not on the flood risk listW4 5UN: not on the flood risk listW4 5UP: not on the flood risk listW4 5UQ: not on the flood risk listW4 5UR: not on the flood risk listW4 5UT: not on the flood risk listW4 5UU: not on the flood risk listW4 5UW: not on the flood risk listW4 5UX: not on the flood risk listW4 5UY: not on the flood risk listW4 5XA: not on the flood risk listW4 5XB: not on the flood risk listW4 5XD: not on the flood risk listW4 5XF: not on the flood risk listW4 5XL: not on the flood risk listW4 5XS: not on the flood risk listW4 5XT: not on the flood risk listW4 5XU: not on the flood risk listW4 5YA: not on the flood risk listW4 5YB: not on the flood risk listW4 5YE: not on the flood risk listW4 5YF: not on the flood risk listW4 5YG: not on the flood risk listW4 5YS: not on the flood risk listW4 5YT: not on the flood risk listW4 1TE: very low flood risk onlyW4 1TG: very low flood risk onlyW4 1TP: very low flood risk onlyW4 1TS: very low flood risk onlyW4 2ND: very low flood risk onlyW4 2NA: very low flood risk onlyW4 2NJ: very low flood risk onlyW4 2NL: very low flood risk onlyW4 2NR: very low flood risk onlyW4 2NS: very low flood risk onlyW4 2NT: very low flood risk onlyW4 2NU: very low flood risk onlyW4 2NX: very low flood risk onlyW4 2PF: very low flood risk onlyW4 2PH: very low flood risk onlyW4 2PN: very low flood risk onlyW4 2PP: very low flood risk onlyW4 2PR: very low flood risk onlyW4 2PS: very low flood risk onlyW4 2PU: very low flood risk onlyW4 2QY: very low flood risk onlyW4 2QZ: very low flood risk onlyW4 2RA: very low flood risk onlyW4 2RB: very low flood risk onlyW4 2RD: very low flood risk onlyW4 2RE: very low flood risk onlyW4 2RF: very low flood risk onlyW4 2RG: very low flood risk onlyW4 2RJ: very low flood risk onlyW4 2RL: very low flood risk onlyW4 2RQ: very low flood risk onlyW4 2RS: very low flood risk onlyW4 2RT: very low flood risk onlyW4 2RU: very low flood risk onlyW4 2RX: very low flood risk onlyW4 2RY: very low flood risk onlyW4 2RZ: very low flood risk onlyW4 2SA: very low flood risk onlyW4 2SD: very low flood risk onlyW4 2SE: very low flood risk onlyW4 2SF: very low flood risk onlyW4 2SG: very low flood risk onlyW4 2SH: very low flood risk onlyW4 2SL: very low flood risk onlyW4 2SN: very low flood risk onlyW4 2SP: very low flood risk onlyW4 2SQ: very low flood risk onlyW4 2SR: very low flood risk onlyW4 2ST: very low flood risk onlyW4 2SW: very low flood risk onlyW4 2SX: very low flood risk onlyW4 2SY: very low flood risk onlyW4 2TA: very low flood risk onlyW4 2TB: very low flood risk onlyW4 2TD: very low flood risk onlyW4 2TE: very low flood risk onlyW4 2TF: very low flood risk onlyW4 2TL: very low flood risk onlyW4 2TN: very low flood risk onlyW4 2TP: very low flood risk onlyW4 2TR: very low flood risk onlyW4 2TS: very low flood risk onlyW4 2TT: very low flood risk onlyW4 2TU: very low flood risk onlyW4 2TW: very low flood risk onlyW4 2TY: very low flood risk onlyW4 2TZ: very low flood risk onlyW4 2UA: very low flood risk onlyW4 2UB: very low flood risk onlyW4 2UD: very low flood risk onlyW4 2UE: very low flood risk onlyW4 3AB: very low flood risk onlyW4 3AJ: very low flood risk onlyW4 3BA: very low flood risk onlyW4 3BX: very low flood risk onlyW4 3BY: very low flood risk onlyW4 3BZ: very low flood risk onlyW4 3DF: very low flood risk onlyW4 3DG: very low flood risk onlyW4 3DP: very low flood risk onlyW4 3DQ: very low flood risk onlyW4 3DR: very low flood risk onlyW4 3DS: very low flood risk onlyW4 3DT: very low flood risk onlyW4 3DX: very low flood risk onlyW4 3DY: very low flood risk onlyW4 3DZ: very low flood risk onlyW4 3EB: very low flood risk onlyW4 3EE: very low flood risk onlyW4 3EF: very low flood risk onlyW4 3EG: very low flood risk onlyW4 3EJ: very low flood risk onlyW4 3EN: very low flood risk onlyW4 3EQ: very low flood risk onlyW4 3ER: very low flood risk onlyW4 3ES: very low flood risk onlyW4 3ET: very low flood risk onlyW4 3EU: very low flood risk onlyW4 3EY: very low flood risk onlyW4 3HA: very low flood risk onlyW4 3HB: very low flood risk onlyW4 3HF: very low flood risk onlyW4 3HG: very low flood risk onlyW4 3HH: very low flood risk onlyW4 3HL: very low flood risk onlyW4 3HQ: very low flood risk onlyW4 3HY: very low flood risk onlyW4 3HZ: very low flood risk onlyW4 3JA: very low flood risk onlyW4 3JB: very low flood risk onlyW4 3JF: very low flood risk onlyW4 3JL: very low flood risk onlyW4 3JP: very low flood risk onlyW4 3JR: very low flood risk onlyW4 3JT: very low flood risk onlyW4 3JW: very low flood risk onlyW4 3JY: very low flood risk onlyW4 3JZ: very low flood risk onlyW4 3LH: very low flood risk onlyW4 3LJ: very low flood risk onlyW4 3LL: very low flood risk onlyW4 3LN: very low flood risk onlyW4 3LP: very low flood risk onlyW4 3LR: very low flood risk onlyW4 3LS: very low flood risk onlyW4 3LT: very low flood risk onlyW4 3LU: very low flood risk onlyW4 3LX: very low flood risk onlyW4 3LY: very low flood risk onlyW4 3LZ: very low flood risk onlyW4 3NA: very low flood risk onlyW4 3NB: very low flood risk onlyW4 3ND: very low flood risk onlyW4 3NE: very low flood risk onlyW4 3NP: very low flood risk onlyW4 3NU: very low flood risk onlyW4 3NY: very low flood risk onlyW4 3PA: very low flood risk onlyW4 3PB: very low flood risk onlyW4 3PE: very low flood risk onlyW4 3PH: very low flood risk onlyW4 3PJ: very low flood risk onlyW4 3PL: very low flood risk onlyW4 3PN: very low flood risk onlyW4 3PP: very low flood risk onlyW4 3PQ: very low flood risk onlyW4 3PZ: very low flood risk onlyW4 3QD: very low flood risk onlyW4 3QE: very low flood risk onlyW4 3QG: very low flood risk onlyW4 3QH: very low flood risk onlyW4 3QJ: very low flood risk onlyW4 3QL: very low flood risk onlyW4 3QN: very low flood risk onlyW4 3QP: very low flood risk onlyW4 3QR: very low flood risk onlyW4 3QS: very low flood risk onlyW4 3QT: very low flood risk onlyW4 3QU: very low flood risk onlyW4 3QW: very low flood risk onlyW4 3QY: very low flood risk onlyW4 3QZ: very low flood risk onlyW4 3RB: very low flood risk onlyW4 3RD: very low flood risk onlyW4 3RG: very low flood risk onlyW4 3RL: very low flood risk onlyW4 3RP: very low flood risk onlyW4 3SL: very low flood risk onlyW4 3SN: very low flood risk onlyW4 3SP: very low flood risk onlyW4 3SR: very low flood risk onlyW4 3SS: very low flood risk onlyW4 3ST: very low flood risk onlyW4 3SX: very low flood risk onlyW4 3SY: very low flood risk onlyW4 3SZ: very low flood risk onlyW4 3TB: very low flood risk onlyW4 3TD: very low flood risk onlyW4 3TE: very low flood risk onlyW4 3TG: very low flood risk onlyW4 3TN: very low flood risk onlyW4 3TP: very low flood risk onlyW4 3TU: very low flood risk onlyW4 3TW: very low flood risk onlyW4 3UL: very low flood risk onlyW4 3UN: very low flood risk onlyW4 3XH: very low flood risk onlyW4 3XQ: very low flood risk onlyW4 2PW: low flood risk at worstW4 2UG: low flood risk at worstW4 3PF: low flood risk at worstW4 3QA: low flood risk at worstW4 3UR: low flood risk at worstW4 3TS: medium flood risk at worstW4 2PJ: high flood riskW4 2QH: high flood riskW4 2UH: high flood riskW4 3PD: high flood riskW4 3UJ: high flood riskW4 3UP: high flood risk Chiswick GunnersburyChiswick Homefields Map of every postcode in W4, by flood risk Of the 1,024 postcodes in W4 that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst, 190 are at very low risk only and 822 are not on the Environment Agency's at-risk list. Places named: Chiswick Gunnersbury, Chiswick Homefields. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A205 Chiswick GunnersburyChiswick Homefields
  • A home or business at high risk: 6
  • At medium risk at worst: 1
  • At low risk at worst: 5
  • At very low risk only: 190
  • Not on the at-risk list: 822

Of the 1,024 postcodes in W4 that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst, 190 are at very low risk only and 822 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 51.4912, longitude -0.2641. 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.

W4 3UP4 at high riskW4 2QH2 at high riskW4 3UJ2 at high riskW4 2PJ1 at high riskW4 2UH1 at high riskW4 3PD1 at high risk

What broadband can you get in W4?

Ofcom reports on 966 of the 1,024 postcodes in W4. At 700 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit700 of 966
Postcodes where every home can get superfast923 of 966

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 W4 at risk of flooding?

202 of the 1,024 postcodes in W4 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 12 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 202 of 1,024 postcodes High: 11Medium: 1Low: 19Very low: 3,236

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 W4?

Homes in W4 sold for a typical £818,588 in the 12 months to August 2026, across 426 sales, down 3.7% on the 12 months before, HM Land Registry's figures show.

£818,588 typical price, the 12 months to August 2026
12 months to August 2025
£850,000
12 months to August 2026
£818,588

▼ down 3.7% on the 12 months before

Detached£2,520,000 11 sales
Semi-detached£1,740,000 58 sales
Terraced£1,192,500 146 sales
Flat or maisonette£515,000 211 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 W4

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

W4 1198 postcodesW4 2219 postcodesW4 3250 postcodesW4 4137 postcodesW4 5212 postcodesW4 98 postcodes
UK postcode format explained

Places in W4

Towns and villages with postcodes in W4, and how many each has here.

Hounslow postcodes,773Ealing postcodes,244Hammersmith and Fulham postcodes,3

Who covers W4

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

  • Hammersmith and Chiswick779
  • Ealing Central and Acton245

Police force areas

  • Metropolitan Police1,024

Next to W4

W3 postcode district W5 postcode district All W districts Hounslow postcodes

"Next to" is by number: the districts before and after W4 in the W area.

Check a postcode

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