HA1 postcode district: Harrow and around

HA1 is a postcode district in England, with 960 postcodes in use in 5 sectors. It has postcodes in Harrow and Brent. It is split between 2 councils: Harrow (915 postcodes) and Brent (45).

Postcodes in use
960
Sectors
5
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 HA1, by flood risk

Map of every postcode in HA1, by flood risk Of the 960 postcodes in HA1 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst and 956 are not on the Environment Agency's at-risk list. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. HA1 1AA: not on the flood risk listHA1 1AF: not on the flood risk listHA1 1AR: not on the flood risk listHA1 1AS: not on the flood risk listHA1 1AT: not on the flood risk listHA1 1AY: not on the flood risk listHA1 1BA: not on the flood risk listHA1 1BB: not on the flood risk listHA1 1BD: not on the flood risk listHA1 1BE: not on the flood risk listHA1 1BH: not on the flood risk listHA1 1BQ: not on the flood risk listHA1 1BW: not on the flood risk listHA1 1DR: not on the flood risk listHA1 1DZ: not on the flood risk listHA1 1EH: not on the flood risk listHA1 1EP: not on the flood risk listHA1 1EQ: not on the flood risk listHA1 1ER: not on the flood risk listHA1 1FD: not on the flood risk listHA1 1GN: not on the flood risk listHA1 1GS: not on the flood risk listHA1 1GU: not on the flood risk listHA1 1GW: not on the flood risk listHA1 1GX: not on the flood risk listHA1 1GZ: not on the flood risk listHA1 1HE: not on the flood risk listHA1 1HN: not on the flood risk listHA1 1HP: not on the flood risk listHA1 1HQ: not on the flood risk listHA1 1HS: not on the flood risk listHA1 1JN: not on the flood risk listHA1 1JP: not on the flood risk listHA1 1JR: not on the flood risk listHA1 1JS: not on the flood risk listHA1 1JU: not on the flood risk listHA1 1JY: not on the flood risk listHA1 1JZ: not on the flood risk listHA1 1LA: not on the flood risk listHA1 1LD: not on the flood risk listHA1 1LE: not on the flood risk listHA1 1LF: not on the flood risk listHA1 1LG: not on the flood risk listHA1 1LH: not on the flood risk listHA1 1LQ: not on the flood risk listHA1 1NB: not on the flood risk listHA1 1NL: not on the flood risk listHA1 1NP: not on the flood risk listHA1 1NR: not on the flood risk listHA1 1NS: not on the flood risk listHA1 1NT: not on the flood risk listHA1 1NU: not on the flood risk listHA1 1NX: not on the flood risk listHA1 1NY: not on the flood risk listHA1 1NZ: not on the flood risk listHA1 1PA: not on the flood risk listHA1 1PB: not on the flood risk listHA1 1PD: not on the flood risk listHA1 1PE: not on the flood risk listHA1 1PF: not on the flood risk listHA1 1PG: not on the flood risk listHA1 1PQ: not on the flood risk listHA1 1PS: not on the flood risk listHA1 1PY: not on the flood risk listHA1 1QA: not on the flood risk listHA1 1QB: not on the flood risk listHA1 1QD: not on the flood risk listHA1 1QF: not on the flood risk listHA1 1QJ: not on the flood risk listHA1 1QL: not on the flood risk listHA1 1QN: not on the flood risk listHA1 1QP: not on the flood risk listHA1 1QQ: not on the flood risk listHA1 1QR: not on the flood risk listHA1 1QS: not on the flood risk listHA1 1QT: not on the flood risk listHA1 1QU: not on the flood risk listHA1 1QW: not on the flood risk listHA1 1RA: not on the flood risk listHA1 1RB: not on the flood risk listHA1 1RD: not on the flood risk listHA1 1RE: not on the flood risk listHA1 1RF: not on the flood risk listHA1 1RG: not on the flood risk listHA1 1RH: not on the flood risk listHA1 1RJ: not on the flood risk listHA1 1RN: not on the flood risk listHA1 1RP: not on the flood risk listHA1 1RQ: not on the flood risk listHA1 1RR: not on the flood risk listHA1 1RS: not on the flood risk listHA1 1RT: not on the flood risk listHA1 1RU: not on the flood risk listHA1 1RW: not on the flood risk listHA1 1RX: not on the flood risk listHA1 1RY: not on the flood risk listHA1 1RZ: not on the flood risk listHA1 1SA: not on the flood risk listHA1 1SB: not on the flood risk listHA1 1SD: not on the flood risk listHA1 1SE: not on the flood risk listHA1 1SF: not on the flood risk listHA1 1SG: not on the flood risk listHA1 1SH: not on the flood risk listHA1 1SJ: not on the flood risk listHA1 1SL: not on the flood risk listHA1 1SP: not on the flood risk listHA1 1SQ: not on the flood risk listHA1 1SR: not on the flood risk listHA1 1SS: not on the flood risk listHA1 1SU: not on the flood risk listHA1 1SX: not on the flood risk listHA1 1SY: not on the flood risk listHA1 1SZ: not on the flood risk listHA1 1TA: not on the flood risk listHA1 1TB: not on the flood risk listHA1 1TD: not on the flood risk listHA1 1TE: not on the flood risk listHA1 1TG: not on the flood risk listHA1 1TH: not on the flood risk listHA1 1TJ: not on the flood risk listHA1 1TL: not on the flood risk listHA1 1TN: not on the flood risk listHA1 1TQ: not on the flood risk listHA1 1TX: not on the flood risk listHA1 1TY: not on the flood risk listHA1 1TZ: not on the flood risk listHA1 1UA: not on the flood risk listHA1 1UB: not on the flood risk listHA1 1UD: not on the flood risk listHA1 1UE: not on the flood risk listHA1 1UF: not on the flood risk listHA1 1UG: not on the flood risk listHA1 1UH: not on the flood risk listHA1 1UJ: not on the flood risk listHA1 1UL: not on the flood risk listHA1 1UN: not on the flood risk listHA1 1UP: not on the flood risk listHA1 1UQ: not on the flood risk listHA1 1UR: not on the flood risk listHA1 1UT: not on the flood risk listHA1 1UU: not on the flood risk listHA1 1UW: not on the flood risk listHA1 1UX: not on the flood risk listHA1 1XD: not on the flood risk listHA1 1XE: not on the flood risk listHA1 1XF: not on the flood risk listHA1 1XH: not on the flood risk listHA1 1XJ: not on the flood risk listHA1 1XL: not on the flood risk listHA1 1XN: not on the flood risk listHA1 1XP: not on the flood risk listHA1 1XR: not on the flood risk listHA1 1XS: not on the flood risk listHA1 1XT: not on the flood risk listHA1 1XU: not on the flood risk listHA1 1XW: not on the flood risk listHA1 1XX: not on the flood risk listHA1 1XY: not on the flood risk listHA1 1XZ: not on the flood risk listHA1 1YB: not on the flood risk listHA1 2AB: not on the flood risk listHA1 2AD: not on the flood risk listHA1 2AF: not on the flood risk listHA1 2AG: not on the flood risk listHA1 2AL: not on the flood risk listHA1 2AP: not on the flood risk listHA1 2AQ: not on the flood risk listHA1 2AR: not on the flood risk listHA1 2AT: not on the flood risk listHA1 2AW: not on the flood risk listHA1 2AX: not on the flood risk listHA1 2AY: not on the flood risk listHA1 2AZ: not on the flood risk listHA1 2BA: not on the flood risk listHA1 2BE: not on the flood risk listHA1 2BF: not on the flood risk listHA1 2BG: not on the flood risk listHA1 2BH: not on the flood risk listHA1 2BL: not on the flood risk listHA1 2BN: not on the flood risk listHA1 2BP: not on the flood risk listHA1 2BQ: not on the flood risk listHA1 2BT: not on the flood risk listHA1 2BU: not on the flood risk listHA1 2BW: not on the flood risk listHA1 2BX: not on the flood risk listHA1 2BY: not on the flood risk listHA1 2DA: not on the flood risk listHA1 2DB: not on the flood risk listHA1 2DD: not on the flood risk listHA1 2DE: not on the flood risk listHA1 2DF: not on the flood risk listHA1 2DH: not on the flood risk listHA1 2DJ: not on the flood risk listHA1 2DL: not on the flood risk listHA1 2DP: not on the flood risk listHA1 2DQ: not on the flood risk listHA1 2DR: not on the flood risk listHA1 2DS: not on the flood risk listHA1 2DW: not on the flood risk listHA1 2DX: not on the flood risk listHA1 2EA: not on the flood risk listHA1 2EB: not on the flood risk listHA1 2EE: not on the flood risk listHA1 2EH: not on the flood risk listHA1 2EJ: not on the flood risk listHA1 2ER: not on the flood risk listHA1 2ES: not on the flood risk listHA1 2ET: not on the flood risk listHA1 2EW: not on the flood risk listHA1 2EX: not on the flood risk listHA1 2EY: not on the flood risk listHA1 2FA: not on the flood risk listHA1 2FB: not on the flood risk listHA1 2FH: not on the flood risk listHA1 2FJ: not on the flood risk listHA1 2FL: not on the flood risk listHA1 2FN: not on the flood risk listHA1 2FS: not on the flood risk listHA1 2FW: not on the flood risk listHA1 2HA: not on the flood risk listHA1 2HB: not on the flood risk listHA1 2HD: not on the flood risk listHA1 2HE: not on the flood risk listHA1 2HF: not on the flood risk listHA1 2HJ: not on the flood risk listHA1 2HN: not on the flood risk listHA1 2HP: not on the flood risk listHA1 2HQ: not on the flood risk listHA1 2HS: not on the flood risk listHA1 2HT: not on the flood risk listHA1 2HU: not on the flood risk listHA1 2HX: not on the flood risk listHA1 2HZ: not on the flood risk listHA1 2JA: not on the flood risk listHA1 2JB: not on the flood risk listHA1 2JE: not on the flood risk listHA1 2JF: not on the flood risk listHA1 2JG: not on the flood risk listHA1 2JH: not on the flood risk listHA1 2JJ: not on the flood risk listHA1 2JL: not on the flood risk listHA1 2JN: not on the flood risk listHA1 2JP: not on the flood risk listHA1 2JQ: not on the flood risk listHA1 2JS: not on the flood risk listHA1 2JU: not on the flood risk listHA1 2JW: not on the flood risk listHA1 2JX: not on the flood risk listHA1 2JZ: not on the flood risk listHA1 2LA: not on the flood risk listHA1 2LB: not on the flood risk listHA1 2LD: not on the flood risk listHA1 2LE: not on the flood risk listHA1 2LF: not on the flood risk listHA1 2LG: not on the flood risk listHA1 2LH: not on the flood risk listHA1 2LJ: not on the flood risk listHA1 2LQ: not on the flood risk listHA1 2LR: not on the flood risk listHA1 2LS: not on the flood risk listHA1 2LT: not on the flood risk listHA1 2LU: not on the flood risk listHA1 2LW: not on the flood risk listHA1 2LX: not on the flood risk listHA1 2LY: not on the flood risk listHA1 2LZ: not on the flood risk listHA1 2NA: not on the flood risk listHA1 2NB: not on the flood risk listHA1 2ND: not on the flood risk listHA1 2NE: not on the flood risk listHA1 2NG: not on the flood risk listHA1 2NH: not on the flood risk listHA1 2NQ: not on the flood risk listHA1 2NU: not on the flood risk listHA1 2NY: not on the flood risk listHA1 2NZ: not on the flood risk listHA1 2PA: not on the flood risk listHA1 2PB: not on the flood risk listHA1 2PD: not on the flood risk listHA1 2PE: not on the flood risk listHA1 2PF: not on the flood risk listHA1 2PG: not on the flood risk listHA1 2PH: not on the flood risk listHA1 2PJ: not on the flood risk listHA1 2PL: not on the flood risk listHA1 2PN: not on the flood risk listHA1 2PP: not on the flood risk listHA1 2PQ: not on the flood risk listHA1 2PR: not on the flood risk listHA1 2PW: not on the flood risk listHA1 2QD: not on the flood risk listHA1 2QH: not on the flood risk listHA1 2QJ: not on the flood risk listHA1 2QL: not on the flood risk listHA1 2QN: not on the flood risk listHA1 2QP: not on the flood risk listHA1 2QQ: not on the flood risk listHA1 2QR: not on the flood risk listHA1 2QS: not on the flood risk listHA1 2QT: not on the flood risk listHA1 2QU: not on the flood risk listHA1 2QW: not on the flood risk listHA1 2QX: not on the flood risk listHA1 2QY: not on the flood risk listHA1 2QZ: not on the flood risk listHA1 2RA: not on the flood risk listHA1 2RB: not on the flood risk listHA1 2RD: not on the flood risk listHA1 2RE: not on the flood risk listHA1 2RF: not on the flood risk listHA1 2RG: not on the flood risk listHA1 2RH: not on the flood risk listHA1 2RP: not on the flood risk listHA1 2RS: not on the flood risk listHA1 2RT: not on the flood risk listHA1 2RU: not on the flood risk listHA1 2RW: not on the flood risk listHA1 2RX: not on the flood risk listHA1 2RY: not on the flood risk listHA1 2RZ: not on the flood risk listHA1 2SA: not on the flood risk listHA1 2SB: not on the flood risk listHA1 2SF: not on the flood risk listHA1 2SG: not on the flood risk listHA1 2SL: not on the flood risk listHA1 2SP: not on the flood risk listHA1 2SQ: not on the flood risk listHA1 2SU: not on the flood risk listHA1 2SX: not on the flood risk listHA1 2SZ: not on the flood risk listHA1 2TA: not on the flood risk listHA1 2TB: not on the flood risk listHA1 2TE: not on the flood risk listHA1 2TJ: not on the flood risk listHA1 2TL: not on the flood risk listHA1 2TN: not on the flood risk listHA1 2TP: not on the flood risk listHA1 2TR: not on the flood risk listHA1 2TS: not on the flood risk listHA1 2TU: not on the flood risk listHA1 2TX: not on the flood risk listHA1 2TY: not on the flood risk listHA1 2UA: not on the flood risk listHA1 2WY: not on the flood risk listHA1 2XY: not on the flood risk listHA1 2YD: not on the flood risk listHA1 2YS: not on the flood risk listHA1 2ZB: not on the flood risk listHA1 3AA: not on the flood risk listHA1 3AB: not on the flood risk listHA1 3AF: not on the flood risk listHA1 3AH: not on the flood risk listHA1 3AJ: not on the flood risk listHA1 3AL: not on the flood risk listHA1 3AN: not on the flood risk listHA1 3AP: not on the flood risk listHA1 3AQ: not on the flood risk listHA1 3AR: not on the flood risk listHA1 3AT: not on the flood risk listHA1 3AW: not on the flood risk listHA1 3AX: not on the flood risk listHA1 3AY: not on the flood risk listHA1 3AZ: not on the flood risk listHA1 3BA: not on the flood risk listHA1 3BB: not on the flood risk listHA1 3BD: not on the flood risk listHA1 3BE: not on the flood risk listHA1 3BF: not on the flood risk listHA1 3BG: not on the flood risk listHA1 3BH: not on the flood risk listHA1 3BJ: not on the flood risk listHA1 3BL: not on the flood risk listHA1 3BN: not on the flood risk listHA1 3BQ: not on the flood risk listHA1 3BS: not on the flood risk listHA1 3BT: not on the flood risk listHA1 3BU: not on the flood risk listHA1 3BX: not on the flood risk listHA1 3BY: not on the flood risk listHA1 3BZ: not on the flood risk listHA1 3DA: not on the flood risk listHA1 3DB: not on the flood risk listHA1 3DD: not on the flood risk listHA1 3DE: not on the flood risk listHA1 3DF: not on the flood risk listHA1 3DG: not on the flood risk listHA1 3DH: not on the flood risk listHA1 3DJ: not on the flood risk listHA1 3DL: not on the flood risk listHA1 3DN: not on the flood risk listHA1 3DP: not on the flood risk listHA1 3DQ: not on the flood risk listHA1 3DR: not on the flood risk listHA1 3DS: not on the flood risk listHA1 3DU: not on the flood risk listHA1 3DW: not on the flood risk listHA1 3DX: not on the flood risk listHA1 3DY: not on the flood risk listHA1 3DZ: not on the flood risk listHA1 3EA: not on the flood risk listHA1 3ED: not on the flood risk listHA1 3EF: not on the flood risk listHA1 3EG: not on the flood risk listHA1 3EH: not on the flood risk listHA1 3EJ: not on the flood risk listHA1 3EL: not on the flood risk listHA1 3EP: not on the flood risk listHA1 3ER: not on the flood risk listHA1 3ES: not on the flood risk listHA1 3ET: not on the flood risk listHA1 3EU: not on the flood risk listHA1 3EW: not on the flood risk listHA1 3EX: not on the flood risk listHA1 3EY: not on the flood risk listHA1 3EZ: not on the flood risk listHA1 3FE: not on the flood risk listHA1 3GE: not on the flood risk listHA1 3GF: not on the flood risk listHA1 3GH: not on the flood risk listHA1 3GJ: not on the flood risk listHA1 3GL: not on the flood risk listHA1 3GN: not on the flood risk listHA1 3GP: not on the flood risk listHA1 3GQ: not on the flood risk listHA1 3GS: not on the flood risk listHA1 3GT: not on the flood risk listHA1 3GW: not on the flood risk listHA1 3GX: not on the flood risk listHA1 3GY: not on the flood risk listHA1 3GZ: not on the flood risk listHA1 3HD: not on the flood risk listHA1 3HE: not on the flood risk listHA1 3HF: not on the flood risk listHA1 3HG: not on the flood risk listHA1 3HJ: not on the flood risk listHA1 3HL: not on the flood risk listHA1 3HN: not on the flood risk listHA1 3HP: not on the flood risk listHA1 3HQ: not on the flood risk listHA1 3HR: not on the flood risk listHA1 3HS: not on the flood risk listHA1 3HT: not on the flood risk listHA1 3HX: not on the flood risk listHA1 3JA: not on the flood risk listHA1 3JB: not on the flood risk listHA1 3JD: not on the flood risk listHA1 3JE: not on the flood risk listHA1 3JF: not on the flood risk listHA1 3JG: not on the flood risk listHA1 3JH: not on the flood risk listHA1 3JJ: not on the flood risk listHA1 3JL: not on the flood risk listHA1 3JN: not on the flood risk listHA1 3JP: not on the flood risk listHA1 3JR: not on the flood risk listHA1 3JS: not on the flood risk listHA1 3JT: not on the flood risk listHA1 3JU: not on the flood risk listHA1 3JW: not on the flood risk listHA1 3JX: not on the flood risk listHA1 3JY: not on the flood risk listHA1 3JZ: not on the flood risk listHA1 3LA: not on the flood risk listHA1 3LB: not on the flood risk listHA1 3LD: not on the flood risk listHA1 3LE: not on the flood risk listHA1 3LF: not on the flood risk listHA1 3LH: not on the flood risk listHA1 3LJ: not on the flood risk listHA1 3LL: not on the flood risk listHA1 3LN: not on the flood risk listHA1 3LP: not on the flood risk listHA1 3LS: not on the flood risk listHA1 3LT: not on the flood risk listHA1 3LU: not on the flood risk listHA1 3LW: not on the flood risk listHA1 3LY: not on the flood risk listHA1 3LZ: not on the flood risk listHA1 3NA: not on the flood risk listHA1 3NB: not on the flood risk listHA1 3ND: not on the flood risk listHA1 3NE: not on the flood risk listHA1 3NF: not on the flood risk listHA1 3NG: not on the flood risk listHA1 3NH: not on the flood risk listHA1 3NJ: not on the flood risk listHA1 3NP: not on the flood risk listHA1 3NT: not on the flood risk listHA1 3NU: not on the flood risk listHA1 3NX: not on the flood risk listHA1 3NY: not on the flood risk listHA1 3NZ: not on the flood risk listHA1 3PA: not on the flood risk listHA1 3PB: not on the flood risk listHA1 3PD: not on the flood risk listHA1 3PE: not on the flood risk listHA1 3PF: not on the flood risk listHA1 3PG: not on the flood risk listHA1 3PH: not on the flood risk listHA1 3PJ: not on the flood risk listHA1 3PL: not on the flood risk listHA1 3PN: not on the flood risk listHA1 3PP: not on the flood risk listHA1 3PQ: not on the flood risk listHA1 3PR: not on the flood risk listHA1 3PS: not on the flood risk listHA1 3PT: not on the flood risk listHA1 3PU: not on the flood risk listHA1 3PW: not on the flood risk listHA1 3PX: not on the flood risk listHA1 3PY: not on the flood risk listHA1 3PZ: not on the flood risk listHA1 3QA: not on the flood risk listHA1 3QB: not on the flood risk listHA1 3QD: not on the flood risk listHA1 3QE: not on the flood risk listHA1 3QF: not on the flood risk listHA1 3QG: not on the flood risk listHA1 3QH: not on the flood risk listHA1 3QJ: not on the flood risk listHA1 3QL: not on the flood risk listHA1 3QN: not on the flood risk listHA1 3QP: not on the flood risk listHA1 3QQ: not on the flood risk listHA1 3QS: not on the flood risk listHA1 3QT: not on the flood risk listHA1 3QX: not on the flood risk listHA1 3RA: not on the flood risk listHA1 3RD: not on the flood risk listHA1 3RE: not on the flood risk listHA1 3RF: not on the flood risk listHA1 3RG: not on the flood risk listHA1 3RH: not on the flood risk listHA1 3RJ: not on the flood risk listHA1 3RL: not on the flood risk listHA1 3RN: not on the flood risk listHA1 3RQ: not on the flood risk listHA1 3RR: not on the flood risk listHA1 3RS: not on the flood risk listHA1 3RT: not on the flood risk listHA1 3RU: not on the flood risk listHA1 3RW: not on the flood risk listHA1 3RX: not on the flood risk listHA1 3SB: not on the flood risk listHA1 3SD: not on the flood risk listHA1 3SE: not on the flood risk listHA1 3SF: not on the flood risk listHA1 3SG: not on the flood risk listHA1 3SH: not on the flood risk listHA1 3SJ: not on the flood risk listHA1 3SN: not on the flood risk listHA1 3SQ: not on the flood risk listHA1 3SS: not on the flood risk listHA1 3ST: not on the flood risk listHA1 3SU: not on the flood risk listHA1 3SW: not on the flood risk listHA1 3SX: not on the flood risk listHA1 3SY: not on the flood risk listHA1 3SZ: not on the flood risk listHA1 3TA: not on the flood risk listHA1 3TB: not on the flood risk listHA1 3TD: not on the flood risk listHA1 3TE: not on the flood risk listHA1 3TF: not on the flood risk listHA1 3TG: not on the flood risk listHA1 3TH: not on the flood risk listHA1 3TL: not on the flood risk listHA1 3TN: not on the flood risk listHA1 3TP: not on the flood risk listHA1 3TS: not on the flood risk listHA1 3TT: not on the flood risk listHA1 3TU: not on the flood risk listHA1 3TX: not on the flood risk listHA1 3TY: not on the flood risk listHA1 3TZ: not on the flood risk listHA1 3UA: not on the flood risk listHA1 3UB: not on the flood risk listHA1 3UD: not on the flood risk listHA1 3UE: not on the flood risk listHA1 3UF: not on the flood risk listHA1 3UG: not on the flood risk listHA1 3UH: not on the flood risk listHA1 3UJ: not on the flood risk listHA1 3UQ: not on the flood risk listHA1 3UX: not on the flood risk listHA1 3WP: not on the flood risk listHA1 3XD: not on the flood risk listHA1 3XH: not on the flood risk listHA1 3XJ: not on the flood risk listHA1 3YG: not on the flood risk listHA1 3YH: not on the flood risk listHA1 3YL: not on the flood risk listHA1 3YP: not on the flood risk listHA1 3YQ: not on the flood risk listHA1 4AB: not on the flood risk listHA1 4AD: not on the flood risk listHA1 4AE: not on the flood risk listHA1 4AF: not on the flood risk listHA1 4AG: not on the flood risk listHA1 4AH: not on the flood risk listHA1 4AJ: not on the flood risk listHA1 4AL: not on the flood risk listHA1 4AN: not on the flood risk listHA1 4AP: not on the flood risk listHA1 4AQ: not on the flood risk listHA1 4AR: not on the flood risk listHA1 4AS: not on the flood risk listHA1 4AW: not on the flood risk listHA1 4AX: not on the flood risk listHA1 4AY: not on the flood risk listHA1 4AZ: not on the flood risk listHA1 4BD: not on the flood risk listHA1 4BE: not on the flood risk listHA1 4BF: not on the flood risk listHA1 4BH: not on the flood risk listHA1 4BJ: not on the flood risk listHA1 4BL: not on the flood risk listHA1 4BN: not on the flood risk listHA1 4BP: not on the flood risk listHA1 4BQ: not on the flood risk listHA1 4BS: not on the flood risk listHA1 4BT: not on the flood risk listHA1 4BU: not on the flood risk listHA1 4BW: not on the flood risk listHA1 4BX: not on the flood risk listHA1 4BY: not on the flood risk listHA1 4BZ: not on the flood risk listHA1 4DA: not on the flood risk listHA1 4DB: not on the flood risk listHA1 4DD: not on the flood risk listHA1 4DF: not on the flood risk listHA1 4DG: not on the flood risk listHA1 4DH: not on the flood risk listHA1 4DJ: not on the flood risk listHA1 4DL: not on the flood risk listHA1 4DN: not on the flood risk listHA1 4DP: not on the flood risk listHA1 4DQ: not on the flood risk listHA1 4DR: not on the flood risk listHA1 4DS: not on the flood risk listHA1 4DT: not on the flood risk listHA1 4DX: not on the flood risk listHA1 4DY: not on the flood risk listHA1 4DZ: not on the flood risk listHA1 4EA: not on the flood risk listHA1 4EB: not on the flood risk listHA1 4ED: not on the flood risk listHA1 4EE: not on the flood risk listHA1 4EF: not on the flood risk listHA1 4EG: not on the flood risk listHA1 4EH: not on the flood risk listHA1 4EJ: not on the flood risk listHA1 4EL: not on the flood risk listHA1 4EN: not on the flood risk listHA1 4EP: not on the flood risk listHA1 4EQ: not on the flood risk listHA1 4ES: not on the flood risk listHA1 4ET: not on the flood risk listHA1 4EU: not on the flood risk listHA1 4EW: not on the flood risk listHA1 4EX: not on the flood risk listHA1 4EY: not on the flood risk listHA1 4EZ: not on the flood risk listHA1 4FL: not on the flood risk listHA1 4FN: not on the flood risk listHA1 4FP: not on the flood risk listHA1 4FR: not on the flood risk listHA1 4FT: not on the flood risk listHA1 4FU: not on the flood risk listHA1 4FX: not on the flood risk listHA1 4FY: not on the flood risk listHA1 4FZ: not on the flood risk listHA1 4GA: not on the flood risk listHA1 4GB: not on the flood risk listHA1 4GD: not on the flood risk listHA1 4GE: not on the flood risk listHA1 4GF: not on the flood risk listHA1 4GG: not on the flood risk listHA1 4GH: not on the flood risk listHA1 4GJ: not on the flood risk listHA1 4GL: not on the flood risk listHA1 4GN: not on the flood risk listHA1 4GP: not on the flood risk listHA1 4GQ: not on the flood risk listHA1 4GR: not on the flood risk listHA1 4GS: not on the flood risk listHA1 4GT: not on the flood risk listHA1 4GU: not on the flood risk listHA1 4GW: not on the flood risk listHA1 4GY: not on the flood risk listHA1 4GZ: not on the flood risk listHA1 4HA: not on the flood risk listHA1 4HD: not on the flood risk listHA1 4HE: not on the flood risk listHA1 4HF: not on the flood risk listHA1 4HJ: not on the flood risk listHA1 4HL: not on the flood risk listHA1 4HN: not on the flood risk listHA1 4HT: not on the flood risk listHA1 4HU: not on the flood risk listHA1 4HX: not on the flood risk listHA1 4HY: not on the flood risk listHA1 4HZ: not on the flood risk listHA1 4JA: not on the flood risk listHA1 4JD: not on the flood risk listHA1 4JE: not on the flood risk listHA1 4JF: not on the flood risk listHA1 4JG: not on the flood risk listHA1 4JH: not on the flood risk listHA1 4JJ: not on the flood risk listHA1 4JN: not on the flood risk listHA1 4JP: not on the flood risk listHA1 4JQ: not on the flood risk listHA1 4JS: not on the flood risk listHA1 4JT: not on the flood risk listHA1 4JU: not on the flood risk listHA1 4JW: not on the flood risk listHA1 4JX: not on the flood risk listHA1 4JY: not on the flood risk listHA1 4JZ: not on the flood risk listHA1 4LB: not on the flood risk listHA1 4LF: not on the flood risk listHA1 4LN: not on the flood risk listHA1 4LP: not on the flood risk listHA1 4LR: not on the flood risk listHA1 4LS: not on the flood risk listHA1 4LT: not on the flood risk listHA1 4LU: not on the flood risk listHA1 4LX: not on the flood risk listHA1 4LY: not on the flood risk listHA1 4LZ: not on the flood risk listHA1 4NA: not on the flood risk listHA1 4NB: not on the flood risk listHA1 4ND: not on the flood risk listHA1 4NE: not on the flood risk listHA1 4NF: not on the flood risk listHA1 4NG: not on the flood risk listHA1 4NH: not on the flood risk listHA1 4NJ: not on the flood risk listHA1 4NL: not on the flood risk listHA1 4NN: not on the flood risk listHA1 4NQ: not on the flood risk listHA1 4PA: not on the flood risk listHA1 4PB: not on the flood risk listHA1 4PF: not on the flood risk listHA1 4PG: not on the flood risk listHA1 4PH: not on the flood risk listHA1 4PL: not on the flood risk listHA1 4PN: not on the flood risk listHA1 4PP: not on the flood risk listHA1 4PQ: not on the flood risk listHA1 4PU: not on the flood risk listHA1 4PW: not on the flood risk listHA1 4QA: not on the flood risk listHA1 4QB: not on the flood risk listHA1 4QD: not on the flood risk listHA1 4QE: not on the flood risk listHA1 4QF: not on the flood risk listHA1 4QG: not on the flood risk listHA1 4QH: not on the flood risk listHA1 4QJ: not on the flood risk listHA1 4QL: not on the flood risk listHA1 4QN: not on the flood risk listHA1 4QP: not on the flood risk listHA1 4QQ: not on the flood risk listHA1 4QR: not on the flood risk listHA1 4QS: not on the flood risk listHA1 4QT: not on the flood risk listHA1 4QU: not on the flood risk listHA1 4QW: not on the flood risk listHA1 4QX: not on the flood risk listHA1 4QY: not on the flood risk listHA1 4QZ: not on the flood risk listHA1 4RA: not on the flood risk listHA1 4RD: not on the flood risk listHA1 4RG: not on the flood risk listHA1 4RH: not on the flood risk listHA1 4RJ: not on the flood risk listHA1 4RL: not on the flood risk listHA1 4RN: not on the flood risk listHA1 4RP: not on the flood risk listHA1 4RQ: not on the flood risk listHA1 4RR: not on the flood risk listHA1 4RS: not on the flood risk listHA1 4RT: not on the flood risk listHA1 4RU: not on the flood risk listHA1 4RW: not on the flood risk listHA1 4RX: not on the flood risk listHA1 4RY: not on the flood risk listHA1 4RZ: not on the flood risk listHA1 4SA: not on the flood risk listHA1 4SB: not on the flood risk listHA1 4SD: not on the flood risk listHA1 4SE: not on the flood risk listHA1 4SF: not on the flood risk listHA1 4SG: not on the flood risk listHA1 4SH: not on the flood risk listHA1 4SQ: not on the flood risk listHA1 4SS: not on the flood risk listHA1 4ST: not on the flood risk listHA1 4SU: not on the flood risk listHA1 4SX: not on the flood risk listHA1 4SY: not on the flood risk listHA1 4SZ: not on the flood risk listHA1 4TA: not on the flood risk listHA1 4TB: not on the flood risk listHA1 4TD: not on the flood risk listHA1 4TE: not on the flood risk listHA1 4TF: not on the flood risk listHA1 4TG: not on the flood risk listHA1 4TH: not on the flood risk listHA1 4TL: not on the flood risk listHA1 4TN: not on the flood risk listHA1 4TP: not on the flood risk listHA1 4TQ: not on the flood risk listHA1 4TR: not on the flood risk listHA1 4TS: not on the flood risk listHA1 4TU: not on the flood risk listHA1 4TW: not on the flood risk listHA1 4TY: not on the flood risk listHA1 4UB: not on the flood risk listHA1 4UD: not on the flood risk listHA1 4UE: not on the flood risk listHA1 4UF: not on the flood risk listHA1 4UG: not on the flood risk listHA1 4UH: not on the flood risk listHA1 4UP: not on the flood risk listHA1 4UQ: not on the flood risk listHA1 4UR: not on the flood risk listHA1 4UT: not on the flood risk listHA1 4UU: not on the flood risk listHA1 4UW: not on the flood risk listHA1 4UX: not on the flood risk listHA1 4UY: not on the flood risk listHA1 4UZ: not on the flood risk listHA1 4WA: not on the flood risk listHA1 4WB: not on the flood risk listHA1 4WF: not on the flood risk listHA1 4WJ: not on the flood risk listHA1 4WL: not on the flood risk listHA1 4WN: not on the flood risk listHA1 4WR: not on the flood risk listHA1 4WS: not on the flood risk listHA1 4WT: not on the flood risk listHA1 4XA: not on the flood risk listHA1 4XB: not on the flood risk listHA1 4XD: not on the flood risk listHA1 4XE: not on the flood risk listHA1 4XF: not on the flood risk listHA1 4XG: not on the flood risk listHA1 4XH: not on the flood risk listHA1 4XJ: not on the flood risk listHA1 4XQ: not on the flood risk listHA1 4YD: not on the flood risk listHA1 4YE: not on the flood risk listHA1 4YL: not on the flood risk listHA1 4YN: not on the flood risk listHA1 4YP: not on the flood risk listHA1 4YW: not on the flood risk listHA1 4PR: low flood risk at worstHA1 4PD: high flood riskHA1 4PE: high flood riskHA1 4PJ: high flood risk Harrow Map of every postcode in HA1, by flood risk Of the 960 postcodes in HA1 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst and 956 are not on the Environment Agency's at-risk list. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A312 Harrow
  • A home or business at high risk: 3
  • At medium risk at worst: 0
  • At low risk at worst: 1
  • At very low risk only: 0
  • Not on the at-risk list: 956

Of the 960 postcodes in HA1 that ONS places, 3 have a home or business at high risk, 1 are at low risk at worst and 956 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.

The middle of its postcodes: latitude 51.5803, longitude -0.3386. 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.

HA1 4PD7 at high riskHA1 4PE6 at high riskHA1 4PJ1 at high risk

What broadband can you get in HA1?

Ofcom reports on 891 of the 960 postcodes in HA1. At 663 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit663 of 891
Postcodes where every home can get superfast835 of 891

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 HA1 at risk of flooding?

4 of the 960 postcodes in HA1 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 26 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 4 of 960 postcodes High: 14Medium: 12Low: 44

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 HA1?

Homes in HA1 sold for a typical £427,500 in the 12 months to August 2026, across 200 sales, up 0.1% on the 12 months before, HM Land Registry's figures show.

£427,500 typical price, the 12 months to August 2026
£427,280 12 months to August 2025
▲ up 0.1% on the 12 months before
  • Detached £1,200,000 11 sales
  • Semi-detached £625,000 34 sales
  • Terraced £625,000 31 sales
  • Flat or maisonette £342,000 124 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 HA1

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

HA1 1174 postcodesHA1 2209 postcodesHA1 3263 postcodesHA1 4291 postcodesHA1 923 postcodes
UK postcode format explained

Places in HA1

Towns and villages with postcodes in HA1, and how many each has here.

Harrow postcodes,914Brent postcodes,44

Who covers HA1

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

  • Harrow West915
  • Brent West45

Police force areas

  • Metropolitan Police960

Next to HA1

HA0 postcode district HA2 postcode district All HA districts Harrow postcodes

"Next to" is by number: the districts before and after HA1 in the HA area.

Check a postcode

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