HA3 postcode district: Harrow and around

HA3 is a postcode district in England, with 1,262 postcodes in use in 7 sectors. It has postcodes in Harrow and Brent. It is split between 2 councils: Harrow (974 postcodes) and Brent (288).

Postcodes in use
1,262
Sectors
7
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 HA3, by flood risk

Map of every postcode in HA3, by flood risk Of the 1,262 postcodes in HA3 that ONS places, 4 have a home or business at high risk, 10 are at medium risk at worst, 39 are at low risk at worst and 1,209 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. HA3 0AA: not on the flood risk listHA3 0AB: not on the flood risk listHA3 0AD: not on the flood risk listHA3 0AG: not on the flood risk listHA3 0AH: not on the flood risk listHA3 0AN: not on the flood risk listHA3 0AP: not on the flood risk listHA3 0AQ: not on the flood risk listHA3 0AR: not on the flood risk listHA3 0AS: not on the flood risk listHA3 0AT: not on the flood risk listHA3 0AU: not on the flood risk listHA3 0AW: not on the flood risk listHA3 0AX: not on the flood risk listHA3 0AZ: not on the flood risk listHA3 0BL: not on the flood risk listHA3 0BN: not on the flood risk listHA3 0BP: not on the flood risk listHA3 0BQ: not on the flood risk listHA3 0BS: not on the flood risk listHA3 0BT: not on the flood risk listHA3 0BU: not on the flood risk listHA3 0BW: not on the flood risk listHA3 0BX: not on the flood risk listHA3 0BY: not on the flood risk listHA3 0BZ: not on the flood risk listHA3 0DA: not on the flood risk listHA3 0DB: not on the flood risk listHA3 0DD: not on the flood risk listHA3 0DG: not on the flood risk listHA3 0DL: not on the flood risk listHA3 0DN: not on the flood risk listHA3 0DP: not on the flood risk listHA3 0DR: not on the flood risk listHA3 0DS: not on the flood risk listHA3 0DT: not on the flood risk listHA3 0DU: not on the flood risk listHA3 0DW: not on the flood risk listHA3 0DX: not on the flood risk listHA3 0DY: not on the flood risk listHA3 0DZ: not on the flood risk listHA3 0EA: not on the flood risk listHA3 0EB: not on the flood risk listHA3 0ED: not on the flood risk listHA3 0EE: not on the flood risk listHA3 0EF: not on the flood risk listHA3 0EG: not on the flood risk listHA3 0EH: not on the flood risk listHA3 0EJ: not on the flood risk listHA3 0EL: not on the flood risk listHA3 0EQ: not on the flood risk listHA3 0HD: not on the flood risk listHA3 0HL: not on the flood risk listHA3 0HN: not on the flood risk listHA3 0HP: not on the flood risk listHA3 0HQ: not on the flood risk listHA3 0HS: not on the flood risk listHA3 0HT: not on the flood risk listHA3 0HW: not on the flood risk listHA3 0JA: not on the flood risk listHA3 0JD: not on the flood risk listHA3 0JE: not on the flood risk listHA3 0JF: not on the flood risk listHA3 0JH: not on the flood risk listHA3 0JJ: not on the flood risk listHA3 0JL: not on the flood risk listHA3 0JN: not on the flood risk listHA3 0JP: not on the flood risk listHA3 0JR: not on the flood risk listHA3 0JT: not on the flood risk listHA3 0JU: not on the flood risk listHA3 0JX: not on the flood risk listHA3 0JY: not on the flood risk listHA3 0JZ: not on the flood risk listHA3 0LH: not on the flood risk listHA3 0LJ: not on the flood risk listHA3 0LL: not on the flood risk listHA3 0LN: not on the flood risk listHA3 0LP: not on the flood risk listHA3 0LR: not on the flood risk listHA3 0LS: not on the flood risk listHA3 0LT: not on the flood risk listHA3 0LU: not on the flood risk listHA3 0LW: not on the flood risk listHA3 0LY: not on the flood risk listHA3 0LZ: not on the flood risk listHA3 0NA: not on the flood risk listHA3 0NB: not on the flood risk listHA3 0NG: not on the flood risk listHA3 0NH: not on the flood risk listHA3 0NJ: not on the flood risk listHA3 0NS: not on the flood risk listHA3 0NU: not on the flood risk listHA3 0NW: not on the flood risk listHA3 0NX: not on the flood risk listHA3 0NY: not on the flood risk listHA3 0NZ: not on the flood risk listHA3 0PA: not on the flood risk listHA3 0PB: not on the flood risk listHA3 0PD: not on the flood risk listHA3 0PE: not on the flood risk listHA3 0PF: not on the flood risk listHA3 0PG: not on the flood risk listHA3 0PH: not on the flood risk listHA3 0PJ: not on the flood risk listHA3 0PN: not on the flood risk listHA3 0PP: not on the flood risk listHA3 0PQ: not on the flood risk listHA3 0PR: not on the flood risk listHA3 0PS: not on the flood risk listHA3 0PU: not on the flood risk listHA3 0PW: not on the flood risk listHA3 0PY: not on the flood risk listHA3 0QA: not on the flood risk listHA3 0QB: not on the flood risk listHA3 0QG: not on the flood risk listHA3 0QH: not on the flood risk listHA3 0QJ: not on the flood risk listHA3 0QQ: not on the flood risk listHA3 0QR: not on the flood risk listHA3 0QS: not on the flood risk listHA3 0QT: not on the flood risk listHA3 0QU: not on the flood risk listHA3 0QW: not on the flood risk listHA3 0QX: not on the flood risk listHA3 0QY: not on the flood risk listHA3 0QZ: not on the flood risk listHA3 0RA: not on the flood risk listHA3 0RB: not on the flood risk listHA3 0RE: not on the flood risk listHA3 0RF: not on the flood risk listHA3 0RG: not on the flood risk listHA3 0RH: not on the flood risk listHA3 0RJ: not on the flood risk listHA3 0RL: not on the flood risk listHA3 0RN: not on the flood risk listHA3 0RQ: not on the flood risk listHA3 0RX: not on the flood risk listHA3 0RZ: not on the flood risk listHA3 0SA: not on the flood risk listHA3 0SB: not on the flood risk listHA3 0SD: not on the flood risk listHA3 0SE: not on the flood risk listHA3 0SF: not on the flood risk listHA3 0SG: not on the flood risk listHA3 0SH: not on the flood risk listHA3 0SJ: not on the flood risk listHA3 0SL: not on the flood risk listHA3 0SN: not on the flood risk listHA3 0SP: not on the flood risk listHA3 0ST: not on the flood risk listHA3 0TA: not on the flood risk listHA3 0TB: not on the flood risk listHA3 0TD: not on the flood risk listHA3 0TF: not on the flood risk listHA3 0TG: not on the flood risk listHA3 0TH: not on the flood risk listHA3 0TQ: not on the flood risk listHA3 0TS: not on the flood risk listHA3 0TT: not on the flood risk listHA3 0TU: not on the flood risk listHA3 0UF: not on the flood risk listHA3 0UG: not on the flood risk listHA3 0UH: not on the flood risk listHA3 0UJ: not on the flood risk listHA3 0UL: not on the flood risk listHA3 0UN: not on the flood risk listHA3 0UP: not on the flood risk listHA3 0UQ: not on the flood risk listHA3 0UR: not on the flood risk listHA3 0UW: not on the flood risk listHA3 0UZ: not on the flood risk listHA3 0WD: not on the flood risk listHA3 0XF: not on the flood risk listHA3 0XQ: not on the flood risk listHA3 0XT: not on the flood risk listHA3 0XX: not on the flood risk listHA3 0XY: not on the flood risk listHA3 0XZ: not on the flood risk listHA3 0YA: not on the flood risk listHA3 0YB: not on the flood risk listHA3 0YD: not on the flood risk listHA3 0YE: not on the flood risk listHA3 0YG: not on the flood risk listHA3 5AA: not on the flood risk listHA3 5AB: not on the flood risk listHA3 5AE: not on the flood risk listHA3 5AH: not on the flood risk listHA3 5AN: not on the flood risk listHA3 5AR: not on the flood risk listHA3 5AS: not on the flood risk listHA3 5AT: not on the flood risk listHA3 5AX: not on the flood risk listHA3 5AY: not on the flood risk listHA3 5AZ: not on the flood risk listHA3 5BA: not on the flood risk listHA3 5BB: not on the flood risk listHA3 5BD: not on the flood risk listHA3 5BJ: not on the flood risk listHA3 5BU: not on the flood risk listHA3 5BY: not on the flood risk listHA3 5DB: not on the flood risk listHA3 5DF: not on the flood risk listHA3 5DL: not on the flood risk listHA3 5DQ: not on the flood risk listHA3 5DS: not on the flood risk listHA3 5DT: not on the flood risk listHA3 5DU: not on the flood risk listHA3 5DX: not on the flood risk listHA3 5DY: not on the flood risk listHA3 5DZ: not on the flood risk listHA3 5EA: not on the flood risk listHA3 5EE: not on the flood risk listHA3 5EG: not on the flood risk listHA3 5EL: not on the flood risk listHA3 5EQ: not on the flood risk listHA3 5ES: not on the flood risk listHA3 5EU: not on the flood risk listHA3 5EX: not on the flood risk listHA3 5EY: not on the flood risk listHA3 5EZ: not on the flood risk listHA3 5FB: not on the flood risk listHA3 5FD: not on the flood risk listHA3 5FH: not on the flood risk listHA3 5GA: not on the flood risk listHA3 5HA: not on the flood risk listHA3 5HB: not on the flood risk listHA3 5HD: not on the flood risk listHA3 5HE: not on the flood risk listHA3 5HF: not on the flood risk listHA3 5HG: not on the flood risk listHA3 5HH: not on the flood risk listHA3 5HJ: not on the flood risk listHA3 5HN: not on the flood risk listHA3 5HP: not on the flood risk listHA3 5HQ: not on the flood risk listHA3 5HR: not on the flood risk listHA3 5HS: not on the flood risk listHA3 5HT: not on the flood risk listHA3 5HU: not on the flood risk listHA3 5HW: not on the flood risk listHA3 5HX: not on the flood risk listHA3 5HY: not on the flood risk listHA3 5HZ: not on the flood risk listHA3 5JA: not on the flood risk listHA3 5JD: not on the flood risk listHA3 5JF: not on the flood risk listHA3 5JH: not on the flood risk listHA3 5JJ: not on the flood risk listHA3 5JL: not on the flood risk listHA3 5JN: not on the flood risk listHA3 5JP: not on the flood risk listHA3 5JQ: not on the flood risk listHA3 5JR: not on the flood risk listHA3 5JS: not on the flood risk listHA3 5JT: not on the flood risk listHA3 5JU: not on the flood risk listHA3 5JW: not on the flood risk listHA3 5JX: not on the flood risk listHA3 5JY: not on the flood risk listHA3 5JZ: not on the flood risk listHA3 5LA: not on the flood risk listHA3 5LB: not on the flood risk listHA3 5LD: not on the flood risk listHA3 5LE: not on the flood risk listHA3 5LF: not on the flood risk listHA3 5LG: not on the flood risk listHA3 5LP: not on the flood risk listHA3 5LR: not on the flood risk listHA3 5LS: not on the flood risk listHA3 5LT: not on the flood risk listHA3 5LU: not on the flood risk listHA3 5LX: not on the flood risk listHA3 5LY: not on the flood risk listHA3 5LZ: not on the flood risk listHA3 5NA: not on the flood risk listHA3 5NB: not on the flood risk listHA3 5ND: not on the flood risk listHA3 5NE: not on the flood risk listHA3 5NF: not on the flood risk listHA3 5NG: not on the flood risk listHA3 5NH: not on the flood risk listHA3 5NJ: not on the flood risk listHA3 5NL: not on the flood risk listHA3 5NN: not on the flood risk listHA3 5NP: not on the flood risk listHA3 5NQ: not on the flood risk listHA3 5NR: not on the flood risk listHA3 5NS: not on the flood risk listHA3 5NT: not on the flood risk listHA3 5NU: not on the flood risk listHA3 5NW: not on the flood risk listHA3 5NX: not on the flood risk listHA3 5NY: not on the flood risk listHA3 5PA: not on the flood risk listHA3 5PB: not on the flood risk listHA3 5PE: not on the flood risk listHA3 5PH: not on the flood risk listHA3 5PJ: not on the flood risk listHA3 5PL: not on the flood risk listHA3 5PN: not on the flood risk listHA3 5PP: not on the flood risk listHA3 5PQ: not on the flood risk listHA3 5PR: not on the flood risk listHA3 5PS: not on the flood risk listHA3 5PT: not on the flood risk listHA3 5PU: not on the flood risk listHA3 5PX: not on the flood risk listHA3 5PY: not on the flood risk listHA3 5PZ: not on the flood risk listHA3 5QA: not on the flood risk listHA3 5QB: not on the flood risk listHA3 5QH: not on the flood risk listHA3 5QL: not on the flood risk listHA3 5QU: not on the flood risk listHA3 5QX: not on the flood risk listHA3 5QY: not on the flood risk listHA3 5RA: not on the flood risk listHA3 5RB: not on the flood risk listHA3 5RE: not on the flood risk listHA3 5RF: not on the flood risk listHA3 5RG: not on the flood risk listHA3 5RJ: not on the flood risk listHA3 5RL: not on the flood risk listHA3 5RN: not on the flood risk listHA3 5RP: not on the flood risk listHA3 5RQ: not on the flood risk listHA3 5RS: not on the flood risk listHA3 5RT: not on the flood risk listHA3 5RU: not on the flood risk listHA3 5RX: not on the flood risk listHA3 5RY: not on the flood risk listHA3 5RZ: not on the flood risk listHA3 5SA: not on the flood risk listHA3 5SB: not on the flood risk listHA3 5SD: not on the flood risk listHA3 5SH: not on the flood risk listHA3 5TJ: not on the flood risk listHA3 5UB: not on the flood risk listHA3 6AA: not on the flood risk listHA3 6AB: not on the flood risk listHA3 6AD: not on the flood risk listHA3 6AE: not on the flood risk listHA3 6AF: not on the flood risk listHA3 6AG: not on the flood risk listHA3 6AH: not on the flood risk listHA3 6AJ: not on the flood risk listHA3 6AL: not on the flood risk listHA3 6AN: not on the flood risk listHA3 6AP: not on the flood risk listHA3 6AQ: not on the flood risk listHA3 6AR: not on the flood risk listHA3 6AS: not on the flood risk listHA3 6AT: not on the flood risk listHA3 6AU: not on the flood risk listHA3 6AW: not on the flood risk listHA3 6AX: not on the flood risk listHA3 6AY: not on the flood risk listHA3 6BA: not on the flood risk listHA3 6BB: not on the flood risk listHA3 6BD: not on the flood risk listHA3 6BE: not on the flood risk listHA3 6BF: not on the flood risk listHA3 6BG: not on the flood risk listHA3 6BH: not on the flood risk listHA3 6BJ: not on the flood risk listHA3 6BN: not on the flood risk listHA3 6BP: not on the flood risk listHA3 6BQ: not on the flood risk listHA3 6BS: not on the flood risk listHA3 6BT: not on the flood risk listHA3 6BU: not on the flood risk listHA3 6BW: not on the flood risk listHA3 6BX: not on the flood risk listHA3 6DD: not on the flood risk listHA3 6DE: not on the flood risk listHA3 6DF: not on the flood risk listHA3 6DG: not on the flood risk listHA3 6DH: not on the flood risk listHA3 6DJ: not on the flood risk listHA3 6DL: not on the flood risk listHA3 6DN: not on the flood risk listHA3 6DP: not on the flood risk listHA3 6DQ: not on the flood risk listHA3 6DR: not on the flood risk listHA3 6DS: not on the flood risk listHA3 6DT: not on the flood risk listHA3 6DW: not on the flood risk listHA3 6DY: not on the flood risk listHA3 6EA: not on the flood risk listHA3 6EB: not on the flood risk listHA3 6ED: not on the flood risk listHA3 6EG: not on the flood risk listHA3 6EH: not on the flood risk listHA3 6EJ: not on the flood risk listHA3 6EL: not on the flood risk listHA3 6EP: not on the flood risk listHA3 6EQ: not on the flood risk listHA3 6ER: not on the flood risk listHA3 6ES: not on the flood risk listHA3 6ET: not on the flood risk listHA3 6EU: not on the flood risk listHA3 6EW: not on the flood risk listHA3 6EX: not on the flood risk listHA3 6EY: not on the flood risk listHA3 6EZ: not on the flood risk listHA3 6FB: not on the flood risk listHA3 6FD: not on the flood risk listHA3 6HA: not on the flood risk listHA3 6HB: not on the flood risk listHA3 6HD: not on the flood risk listHA3 6HE: not on the flood risk listHA3 6HF: not on the flood risk listHA3 6HH: not on the flood risk listHA3 6HJ: not on the flood risk listHA3 6HL: not on the flood risk listHA3 6HP: not on the flood risk listHA3 6HQ: not on the flood risk listHA3 6HS: not on the flood risk listHA3 6HT: not on the flood risk listHA3 6HU: not on the flood risk listHA3 6HW: not on the flood risk listHA3 6HY: not on the flood risk listHA3 6JA: not on the flood risk listHA3 6JB: not on the flood risk listHA3 6JD: not on the flood risk listHA3 6JE: not on the flood risk listHA3 6JF: not on the flood risk listHA3 6JG: not on the flood risk listHA3 6JH: not on the flood risk listHA3 6JJ: not on the flood risk listHA3 6JL: not on the flood risk listHA3 6JN: not on the flood risk listHA3 6JP: not on the flood risk listHA3 6JQ: not on the flood risk listHA3 6JR: not on the flood risk listHA3 6JT: not on the flood risk listHA3 6JU: not on the flood risk listHA3 6JW: not on the flood risk listHA3 6JX: not on the flood risk listHA3 6JY: not on the flood risk listHA3 6LE: not on the flood risk listHA3 6LF: not on the flood risk listHA3 6LG: not on the flood risk listHA3 6LH: not on the flood risk listHA3 6LJ: not on the flood risk listHA3 6LL: not on the flood risk listHA3 6LN: not on the flood risk listHA3 6LP: not on the flood risk listHA3 6LQ: not on the flood risk listHA3 6LR: not on the flood risk listHA3 6LS: not on the flood risk listHA3 6LT: not on the flood risk listHA3 6LU: not on the flood risk listHA3 6LW: not on the flood risk listHA3 6LX: not on the flood risk listHA3 6LY: not on the flood risk listHA3 6LZ: not on the flood risk listHA3 6NA: not on the flood risk listHA3 6NB: not on the flood risk listHA3 6ND: not on the flood risk listHA3 6NF: not on the flood risk listHA3 6NP: not on the flood risk listHA3 6NR: not on the flood risk listHA3 6NS: not on the flood risk listHA3 6NW: not on the flood risk listHA3 6NX: not on the flood risk listHA3 6NY: not on the flood risk listHA3 6PD: not on the flood risk listHA3 6PG: not on the flood risk listHA3 6PH: not on the flood risk listHA3 6PJ: not on the flood risk listHA3 6PL: not on the flood risk listHA3 6PN: not on the flood risk listHA3 6PP: not on the flood risk listHA3 6PQ: not on the flood risk listHA3 6PR: not on the flood risk listHA3 6PT: not on the flood risk listHA3 6PW: not on the flood risk listHA3 6QH: not on the flood risk listHA3 6QJ: not on the flood risk listHA3 6QL: not on the flood risk listHA3 6QN: not on the flood risk listHA3 6QP: not on the flood risk listHA3 6QR: not on the flood risk listHA3 6QS: not on the flood risk listHA3 6QT: not on the flood risk listHA3 6QW: not on the flood risk listHA3 6QX: not on the flood risk listHA3 6QY: not on the flood risk listHA3 6QZ: not on the flood risk listHA3 6RA: not on the flood risk listHA3 6RB: not on the flood risk listHA3 6RD: not on the flood risk listHA3 6RN: not on the flood risk listHA3 6RP: not on the flood risk listHA3 6RR: not on the flood risk listHA3 6RS: not on the flood risk listHA3 6RT: not on the flood risk listHA3 6RU: not on the flood risk listHA3 6RW: not on the flood risk listHA3 6RX: not on the flood risk listHA3 6RY: not on the flood risk listHA3 6RZ: not on the flood risk listHA3 6SA: not on the flood risk listHA3 6SB: not on the flood risk listHA3 6SD: not on the flood risk listHA3 6SE: not on the flood risk listHA3 6SF: not on the flood risk listHA3 6SH: not on the flood risk listHA3 6SL: not on the flood risk listHA3 6SN: not on the flood risk listHA3 6SP: not on the flood risk listHA3 6SQ: not on the flood risk listHA3 6SR: not on the flood risk listHA3 6SS: not on the flood risk listHA3 6ST: not on the flood risk listHA3 6SU: not on the flood risk listHA3 6SX: not on the flood risk listHA3 6TF: not on the flood risk listHA3 6TG: not on the flood risk listHA3 6TH: not on the flood risk listHA3 6TL: not on the flood risk listHA3 6TN: not on the flood risk listHA3 6TP: not on the flood risk listHA3 6TQ: not on the flood risk listHA3 6TR: not on the flood risk listHA3 6TS: not on the flood risk listHA3 6TT: not on the flood risk listHA3 6TU: not on the flood risk listHA3 6TW: not on the flood risk listHA3 6TX: not on the flood risk listHA3 6TY: not on the flood risk listHA3 6TZ: not on the flood risk listHA3 6UA: not on the flood risk listHA3 6UB: not on the flood risk listHA3 7AB: not on the flood risk listHA3 7AD: not on the flood risk listHA3 7AF: not on the flood risk listHA3 7AH: not on the flood risk listHA3 7AL: not on the flood risk listHA3 7AN: not on the flood risk listHA3 7AP: not on the flood risk listHA3 7AR: not on the flood risk listHA3 7AS: not on the flood risk listHA3 7AT: not on the flood risk listHA3 7AU: not on the flood risk listHA3 7AW: not on the flood risk listHA3 7AX: not on the flood risk listHA3 7AY: not on the flood risk listHA3 7BA: not on the flood risk listHA3 7BB: not on the flood risk listHA3 7BD: not on the flood risk listHA3 7BG: not on the flood risk listHA3 7BN: not on the flood risk listHA3 7BP: not on the flood risk listHA3 7BS: not on the flood risk listHA3 7BT: not on the flood risk listHA3 7BU: not on the flood risk listHA3 7BW: not on the flood risk listHA3 7BX: not on the flood risk listHA3 7BY: not on the flood risk listHA3 7BZ: not on the flood risk listHA3 7DA: not on the flood risk listHA3 7DB: not on the flood risk listHA3 7DD: not on the flood risk listHA3 7DE: not on the flood risk listHA3 7DF: not on the flood risk listHA3 7DG: not on the flood risk listHA3 7DH: not on the flood risk listHA3 7DJ: not on the flood risk listHA3 7DL: not on the flood risk listHA3 7DN: not on the flood risk listHA3 7DP: not on the flood risk listHA3 7DQ: not on the flood risk listHA3 7DU: not on the flood risk listHA3 7DY: not on the flood risk listHA3 7EA: not on the flood risk listHA3 7EB: not on the flood risk listHA3 7ED: not on the flood risk listHA3 7EE: not on the flood risk listHA3 7EG: not on the flood risk listHA3 7EH: not on the flood risk listHA3 7EJ: not on the flood risk listHA3 7EL: not on the flood risk listHA3 7EP: not on the flood risk listHA3 7EQ: not on the flood risk listHA3 7ER: not on the flood risk listHA3 7ET: not on the flood risk listHA3 7EU: not on the flood risk listHA3 7EY: not on the flood risk listHA3 7EZ: not on the flood risk listHA3 7FB: not on the flood risk listHA3 7FD: not on the flood risk listHA3 7FE: not on the flood risk listHA3 7FF: not on the flood risk listHA3 7FG: not on the flood risk listHA3 7FJ: not on the flood risk listHA3 7FL: not on the flood risk listHA3 7HB: not on the flood risk listHA3 7HD: not on the flood risk listHA3 7HE: not on the flood risk listHA3 7HF: not on the flood risk listHA3 7HG: not on the flood risk listHA3 7HH: not on the flood risk listHA3 7HL: not on the flood risk listHA3 7HN: not on the flood risk listHA3 7HP: not on the flood risk listHA3 7HQ: not on the flood risk listHA3 7HR: not on the flood risk listHA3 7HS: not on the flood risk listHA3 7HT: not on the flood risk listHA3 7HU: not on the flood risk listHA3 7HW: not on the flood risk listHA3 7HX: not on the flood risk listHA3 7HY: not on the flood risk listHA3 7HZ: not on the flood risk listHA3 7JA: not on the flood risk listHA3 7JB: not on the flood risk listHA3 7JD: not on the flood risk listHA3 7JE: not on the flood risk listHA3 7JF: not on the flood risk listHA3 7JG: not on the flood risk listHA3 7JJ: not on the flood risk listHA3 7JN: not on the flood risk listHA3 7JP: not on the flood risk listHA3 7JQ: not on the flood risk listHA3 7JS: not on the flood risk listHA3 7JT: not on the flood risk listHA3 7JU: not on the flood risk listHA3 7JW: not on the flood risk listHA3 7JX: not on the flood risk listHA3 7JY: not on the flood risk listHA3 7JZ: not on the flood risk listHA3 7LA: not on the flood risk listHA3 7LB: not on the flood risk listHA3 7LD: not on the flood risk listHA3 7LE: not on the flood risk listHA3 7LF: not on the flood risk listHA3 7LG: not on the flood risk listHA3 7LH: not on the flood risk listHA3 7LJ: not on the flood risk listHA3 7LL: not on the flood risk listHA3 7LP: not on the flood risk listHA3 7LQ: not on the flood risk listHA3 7LR: not on the flood risk listHA3 7LS: not on the flood risk listHA3 7LX: not on the flood risk listHA3 7LY: not on the flood risk listHA3 7NA: not on the flood risk listHA3 7NB: not on the flood risk listHA3 7ND: not on the flood risk listHA3 7NE: not on the flood risk listHA3 7NF: not on the flood risk listHA3 7NG: not on the flood risk listHA3 7NH: not on the flood risk listHA3 7NJ: not on the flood risk listHA3 7NL: not on the flood risk listHA3 7NN: not on the flood risk listHA3 7NP: not on the flood risk listHA3 7NQ: not on the flood risk listHA3 7NR: not on the flood risk listHA3 7NS: not on the flood risk listHA3 7NT: not on the flood risk listHA3 7NU: not on the flood risk listHA3 7NW: not on the flood risk listHA3 7NX: not on the flood risk listHA3 7NY: not on the flood risk listHA3 7PA: not on the flood risk listHA3 7PB: not on the flood risk listHA3 7PJ: not on the flood risk listHA3 7PL: not on the flood risk listHA3 7PN: not on the flood risk listHA3 7PP: not on the flood risk listHA3 7PR: not on the flood risk listHA3 7PS: not on the flood risk listHA3 7PT: not on the flood risk listHA3 7PU: not on the flood risk listHA3 7PW: not on the flood risk listHA3 7PX: not on the flood risk listHA3 7PY: not on the flood risk listHA3 7PZ: not on the flood risk listHA3 7QA: not on the flood risk listHA3 7QB: not on the flood risk listHA3 7QD: not on the flood risk listHA3 7QE: not on the flood risk listHA3 7QF: not on the flood risk listHA3 7QG: not on the flood risk listHA3 7QQ: not on the flood risk listHA3 7QR: not on the flood risk listHA3 7QS: not on the flood risk listHA3 7QT: not on the flood risk listHA3 7QX: not on the flood risk listHA3 7QZ: not on the flood risk listHA3 7RA: not on the flood risk listHA3 7RB: not on the flood risk listHA3 7RE: not on the flood risk listHA3 7RG: not on the flood risk listHA3 7RH: not on the flood risk listHA3 7RL: not on the flood risk listHA3 7RN: not on the flood risk listHA3 7RR: not on the flood risk listHA3 7RT: not on the flood risk listHA3 7RU: not on the flood risk listHA3 7RW: not on the flood risk listHA3 7RX: not on the flood risk listHA3 7SA: not on the flood risk listHA3 7SB: not on the flood risk listHA3 7SE: not on the flood risk listHA3 7SF: not on the flood risk listHA3 7SG: not on the flood risk listHA3 7SH: not on the flood risk listHA3 7SJ: not on the flood risk listHA3 7SL: not on the flood risk listHA3 7SN: not on the flood risk listHA3 7SP: not on the flood risk listHA3 7SQ: not on the flood risk listHA3 7SR: not on the flood risk listHA3 7SW: not on the flood risk listHA3 7SX: not on the flood risk listHA3 7SY: not on the flood risk listHA3 7SZ: not on the flood risk listHA3 7TB: not on the flood risk listHA3 7TD: not on the flood risk listHA3 7TF: not on the flood risk listHA3 7TG: not on the flood risk listHA3 7TQ: not on the flood risk listHA3 7TU: not on the flood risk listHA3 7UA: not on the flood risk listHA3 7UB: not on the flood risk listHA3 8AA: not on the flood risk listHA3 8AB: not on the flood risk listHA3 8AE: not on the flood risk listHA3 8AF: not on the flood risk listHA3 8AG: not on the flood risk listHA3 8AH: not on the flood risk listHA3 8AJ: not on the flood risk listHA3 8AL: not on the flood risk listHA3 8AP: not on the flood risk listHA3 8AQ: not on the flood risk listHA3 8AT: not on the flood risk listHA3 8AX: not on the flood risk listHA3 8AY: not on the flood risk listHA3 8AZ: not on the flood risk listHA3 8BB: not on the flood risk listHA3 8BT: not on the flood risk listHA3 8BX: not on the flood risk listHA3 8BY: not on the flood risk listHA3 8DB: not on the flood risk listHA3 8DD: not on the flood risk listHA3 8DN: not on the flood risk listHA3 8DP: not on the flood risk listHA3 8DS: not on the flood risk listHA3 8DT: not on the flood risk listHA3 8DU: not on the flood risk listHA3 8DX: not on the flood risk listHA3 8DY: not on the flood risk listHA3 8ED: not on the flood risk listHA3 8EJ: not on the flood risk listHA3 8EN: not on the flood risk listHA3 8EP: not on the flood risk listHA3 8ER: not on the flood risk listHA3 8ES: not on the flood risk listHA3 8ET: not on the flood risk listHA3 8EU: not on the flood risk listHA3 8EW: not on the flood risk listHA3 8EX: not on the flood risk listHA3 8EY: not on the flood risk listHA3 8EZ: not on the flood risk listHA3 8FA: not on the flood risk listHA3 8FE: not on the flood risk listHA3 8FF: not on the flood risk listHA3 8FG: not on the flood risk listHA3 8FH: not on the flood risk listHA3 8FJ: not on the flood risk listHA3 8FL: not on the flood risk listHA3 8HA: not on the flood risk listHA3 8HB: not on the flood risk listHA3 8HD: not on the flood risk listHA3 8HR: not on the flood risk listHA3 8HS: not on the flood risk listHA3 8HT: not on the flood risk listHA3 8HU: not on the flood risk listHA3 8HW: not on the flood risk listHA3 8HX: not on the flood risk listHA3 8HY: not on the flood risk listHA3 8HZ: not on the flood risk listHA3 8JA: not on the flood risk listHA3 8JB: not on the flood risk listHA3 8JD: not on the flood risk listHA3 8JE: not on the flood risk listHA3 8JP: not on the flood risk listHA3 8JR: not on the flood risk listHA3 8JS: not on the flood risk listHA3 8JT: not on the flood risk listHA3 8JU: not on the flood risk listHA3 8JX: not on the flood risk listHA3 8JY: not on the flood risk listHA3 8JZ: not on the flood risk listHA3 8LA: not on the flood risk listHA3 8LB: not on the flood risk listHA3 8LD: not on the flood risk listHA3 8LE: not on the flood risk listHA3 8LF: not on the flood risk listHA3 8LG: not on the flood risk listHA3 8LH: not on the flood risk listHA3 8LJ: not on the flood risk listHA3 8LL: not on the flood risk listHA3 8LU: not on the flood risk listHA3 8LX: not on the flood risk listHA3 8LY: not on the flood risk listHA3 8LZ: not on the flood risk listHA3 8NA: not on the flood risk listHA3 8NB: not on the flood risk listHA3 8ND: not on the flood risk listHA3 8NE: not on the flood risk listHA3 8NF: not on the flood risk listHA3 8NH: not on the flood risk listHA3 8NJ: not on the flood risk listHA3 8NL: not on the flood risk listHA3 8NN: not on the flood risk listHA3 8NP: not on the flood risk listHA3 8NQ: not on the flood risk listHA3 8NS: not on the flood risk listHA3 8NT: not on the flood risk listHA3 8NW: not on the flood risk listHA3 8NX: not on the flood risk listHA3 8PA: not on the flood risk listHA3 8PB: not on the flood risk listHA3 8PD: not on the flood risk listHA3 8PE: not on the flood risk listHA3 8PF: not on the flood risk listHA3 8PG: not on the flood risk listHA3 8PH: not on the flood risk listHA3 8PJ: not on the flood risk listHA3 8PL: not on the flood risk listHA3 8PN: not on the flood risk listHA3 8PP: not on the flood risk listHA3 8PQ: not on the flood risk listHA3 8PR: not on the flood risk listHA3 8PS: not on the flood risk listHA3 8PT: not on the flood risk listHA3 8PU: not on the flood risk listHA3 8PW: not on the flood risk listHA3 8QB: not on the flood risk listHA3 8QD: not on the flood risk listHA3 8QE: not on the flood risk listHA3 8QF: not on the flood risk listHA3 8QG: not on the flood risk listHA3 8QH: not on the flood risk listHA3 8QJ: not on the flood risk listHA3 8QL: not on the flood risk listHA3 8QN: not on the flood risk listHA3 8QP: not on the flood risk listHA3 8QQ: not on the flood risk listHA3 8QS: not on the flood risk listHA3 8QT: not on the flood risk listHA3 8QU: not on the flood risk listHA3 8QW: not on the flood risk listHA3 8RA: not on the flood risk listHA3 8RB: not on the flood risk listHA3 8RD: not on the flood risk listHA3 8RG: not on the flood risk listHA3 8RH: not on the flood risk listHA3 8RJ: not on the flood risk listHA3 8RL: not on the flood risk listHA3 8RN: not on the flood risk listHA3 8RP: not on the flood risk listHA3 8RQ: not on the flood risk listHA3 8RR: not on the flood risk listHA3 8RS: not on the flood risk listHA3 8RT: not on the flood risk listHA3 8RU: not on the flood risk listHA3 8RW: not on the flood risk listHA3 8RX: not on the flood risk listHA3 8RY: not on the flood risk listHA3 8RZ: not on the flood risk listHA3 8SA: not on the flood risk listHA3 8SB: not on the flood risk listHA3 8SP: not on the flood risk listHA3 8SS: not on the flood risk listHA3 8SU: not on the flood risk listHA3 8SX: not on the flood risk listHA3 8SY: not on the flood risk listHA3 8SZ: not on the flood risk listHA3 8TA: not on the flood risk listHA3 8TB: not on the flood risk listHA3 8TD: not on the flood risk listHA3 8TE: not on the flood risk listHA3 8TF: not on the flood risk listHA3 8TG: not on the flood risk listHA3 8TH: not on the flood risk listHA3 8TJ: not on the flood risk listHA3 8TL: not on the flood risk listHA3 8TQ: not on the flood risk listHA3 8TZ: not on the flood risk listHA3 8UA: not on the flood risk listHA3 8UB: not on the flood risk listHA3 8UD: not on the flood risk listHA3 8UE: not on the flood risk listHA3 8UF: not on the flood risk listHA3 8UG: not on the flood risk listHA3 8UH: not on the flood risk listHA3 8UJ: not on the flood risk listHA3 8UQ: not on the flood risk listHA3 8UU: not on the flood risk listHA3 8UX: not on the flood risk listHA3 9AA: not on the flood risk listHA3 9AB: not on the flood risk listHA3 9AD: not on the flood risk listHA3 9AE: not on the flood risk listHA3 9AF: not on the flood risk listHA3 9AG: not on the flood risk listHA3 9AH: not on the flood risk listHA3 9AJ: not on the flood risk listHA3 9AL: not on the flood risk listHA3 9AN: not on the flood risk listHA3 9AP: not on the flood risk listHA3 9AQ: not on the flood risk listHA3 9AR: not on the flood risk listHA3 9AS: not on the flood risk listHA3 9AT: not on the flood risk listHA3 9AU: not on the flood risk listHA3 9AW: not on the flood risk listHA3 9BB: not on the flood risk listHA3 9BD: not on the flood risk listHA3 9BG: not on the flood risk listHA3 9BH: not on the flood risk listHA3 9BL: not on the flood risk listHA3 9BN: not on the flood risk listHA3 9BP: not on the flood risk listHA3 9BQ: not on the flood risk listHA3 9BT: not on the flood risk listHA3 9BU: not on the flood risk listHA3 9BW: not on the flood risk listHA3 9BX: not on the flood risk listHA3 9BY: not on the flood risk listHA3 9BZ: not on the flood risk listHA3 9DA: not on the flood risk listHA3 9DG: not on the flood risk listHA3 9DH: not on the flood risk listHA3 9DJ: not on the flood risk listHA3 9DL: not on the flood risk listHA3 9DN: not on the flood risk listHA3 9DP: not on the flood risk listHA3 9DW: not on the flood risk listHA3 9DX: not on the flood risk listHA3 9EA: not on the flood risk listHA3 9EB: not on the flood risk listHA3 9ED: not on the flood risk listHA3 9EF: not on the flood risk listHA3 9EG: not on the flood risk listHA3 9EH: not on the flood risk listHA3 9EL: not on the flood risk listHA3 9EN: not on the flood risk listHA3 9EP: not on the flood risk listHA3 9EQ: not on the flood risk listHA3 9ER: not on the flood risk listHA3 9ES: not on the flood risk listHA3 9ET: not on the flood risk listHA3 9EU: not on the flood risk listHA3 9EW: not on the flood risk listHA3 9EX: not on the flood risk listHA3 9EY: not on the flood risk listHA3 9EZ: not on the flood risk listHA3 9HH: not on the flood risk listHA3 9HJ: not on the flood risk listHA3 9HL: not on the flood risk listHA3 9HN: not on the flood risk listHA3 9HP: not on the flood risk listHA3 9HR: not on the flood risk listHA3 9HS: not on the flood risk listHA3 9HT: not on the flood risk listHA3 9HW: not on the flood risk listHA3 9HX: not on the flood risk listHA3 9HY: not on the flood risk listHA3 9HZ: not on the flood risk listHA3 9JA: not on the flood risk listHA3 9JB: not on the flood risk listHA3 9JD: not on the flood risk listHA3 9JE: not on the flood risk listHA3 9JF: not on the flood risk listHA3 9JH: not on the flood risk listHA3 9JP: not on the flood risk listHA3 9JR: not on the flood risk listHA3 9JS: not on the flood risk listHA3 9JT: not on the flood risk listHA3 9JU: not on the flood risk listHA3 9JX: not on the flood risk listHA3 9JY: not on the flood risk listHA3 9JZ: not on the flood risk listHA3 9LA: not on the flood risk listHA3 9LB: not on the flood risk listHA3 9LD: not on the flood risk listHA3 9LE: not on the flood risk listHA3 9LF: not on the flood risk listHA3 9LP: not on the flood risk listHA3 9LR: not on the flood risk listHA3 9LS: not on the flood risk listHA3 9LT: not on the flood risk listHA3 9LU: not on the flood risk listHA3 9LX: not on the flood risk listHA3 9LY: not on the flood risk listHA3 9LZ: not on the flood risk listHA3 9NA: not on the flood risk listHA3 9NB: not on the flood risk listHA3 9NE: not on the flood risk listHA3 9NF: not on the flood risk listHA3 9NG: not on the flood risk listHA3 9NP: not on the flood risk listHA3 9NT: not on the flood risk listHA3 9NU: not on the flood risk listHA3 9NX: not on the flood risk listHA3 9NY: not on the flood risk listHA3 9NZ: not on the flood risk listHA3 9PA: not on the flood risk listHA3 9PB: not on the flood risk listHA3 9PD: not on the flood risk listHA3 9PE: not on the flood risk listHA3 9PG: not on the flood risk listHA3 9PQ: not on the flood risk listHA3 9PS: not on the flood risk listHA3 9PT: not on the flood risk listHA3 9PU: not on the flood risk listHA3 9PX: not on the flood risk listHA3 9PY: not on the flood risk listHA3 9PZ: not on the flood risk listHA3 9QA: not on the flood risk listHA3 9QB: not on the flood risk listHA3 9QD: not on the flood risk listHA3 9QE: not on the flood risk listHA3 9QN: not on the flood risk listHA3 9QP: not on the flood risk listHA3 9QR: not on the flood risk listHA3 9QS: not on the flood risk listHA3 9QW: not on the flood risk listHA3 9QX: not on the flood risk listHA3 9QZ: not on the flood risk listHA3 9RA: not on the flood risk listHA3 9RB: not on the flood risk listHA3 9RD: not on the flood risk listHA3 9RE: not on the flood risk listHA3 9RF: not on the flood risk listHA3 9RG: not on the flood risk listHA3 9RH: not on the flood risk listHA3 9RJ: not on the flood risk listHA3 9RQ: not on the flood risk listHA3 9RT: not on the flood risk listHA3 9RW: not on the flood risk listHA3 9RY: not on the flood risk listHA3 9RZ: not on the flood risk listHA3 9SD: not on the flood risk listHA3 9SE: not on the flood risk listHA3 9SF: not on the flood risk listHA3 9SG: not on the flood risk listHA3 9SH: not on the flood risk listHA3 9SJ: not on the flood risk listHA3 9SN: not on the flood risk listHA3 9SP: not on the flood risk listHA3 9SQ: not on the flood risk listHA3 9SR: not on the flood risk listHA3 9SW: not on the flood risk listHA3 9TA: not on the flood risk listHA3 9TB: not on the flood risk listHA3 9TD: not on the flood risk listHA3 9TE: not on the flood risk listHA3 9TF: not on the flood risk listHA3 9TG: not on the flood risk listHA3 9TH: not on the flood risk listHA3 9TJ: not on the flood risk listHA3 9TL: not on the flood risk listHA3 9TN: not on the flood risk listHA3 9TP: not on the flood risk listHA3 9TQ: not on the flood risk listHA3 9TR: not on the flood risk listHA3 9TS: not on the flood risk listHA3 9TT: not on the flood risk listHA3 9TW: not on the flood risk listHA3 9TY: not on the flood risk listHA3 9UD: not on the flood risk listHA3 9UF: not on the flood risk listHA3 9UG: not on the flood risk listHA3 9UJ: not on the flood risk listHA3 9UL: not on the flood risk listHA3 9UP: not on the flood risk listHA3 9UQ: not on the flood risk listHA3 9UT: not on the flood risk listHA3 9UW: not on the flood risk listHA3 9UX: not on the flood risk listHA3 9UY: not on the flood risk listHA3 9XD: not on the flood risk listHA3 9XE: not on the flood risk listHA3 9XF: not on the flood risk listHA3 9XH: not on the flood risk listHA3 9XJ: not on the flood risk listHA3 0JG: low flood risk at worstHA3 0JQ: low flood risk at worstHA3 0RY: low flood risk at worstHA3 0SQ: low flood risk at worstHA3 0TE: low flood risk at worstHA3 0TJ: low flood risk at worstHA3 0TN: low flood risk at worstHA3 0UE: low flood risk at worstHA3 0UX: low flood risk at worstHA3 0XD: low flood risk at worstHA3 0XG: low flood risk at worstHA3 0XH: low flood risk at worstHA3 0XJ: low flood risk at worstHA3 0XN: low flood risk at worstHA3 0XP: low flood risk at worstHA3 0XS: low flood risk at worstHA3 6PF: low flood risk at worstHA3 6PS: low flood risk at worstHA3 6PU: low flood risk at worstHA3 8DE: low flood risk at worstHA3 8DF: low flood risk at worstHA3 8DG: low flood risk at worstHA3 8DQ: low flood risk at worstHA3 8EA: low flood risk at worstHA3 8HL: low flood risk at worstHA3 8HP: low flood risk at worstHA3 8TU: low flood risk at worstHA3 8TX: low flood risk at worstHA3 8TY: low flood risk at worstHA3 9PN: low flood risk at worstHA3 9RS: low flood risk at worstHA3 9TX: low flood risk at worstHA3 9TZ: low flood risk at worstHA3 9UB: low flood risk at worstHA3 9UR: low flood risk at worstHA3 9XA: low flood risk at worstHA3 9XB: low flood risk at worstHA3 9XG: low flood risk at worstHA3 0RD: medium flood risk at worstHA3 0TL: medium flood risk at worstHA3 0TP: medium flood risk at worstHA3 0TW: medium flood risk at worstHA3 0TY: medium flood risk at worstHA3 0UT: medium flood risk at worstHA3 0YF: medium flood risk at worstHA3 9PR: medium flood risk at worstHA3 9UZ: medium flood risk at worstHA3 9XQ: medium flood risk at worstHA3 0TR: high flood riskHA3 8EL: high flood riskHA3 9NR: high flood riskHA3 9NS: high flood risk Harrow 5 postcodes at high or medium risk, outlined: this goes to HA3 0TR, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in HA3, by flood risk Of the 1,262 postcodes in HA3 that ONS places, 4 have a home or business at high risk, 10 are at medium risk at worst, 39 are at low risk at worst and 1,209 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A404A4140A5 Harrow
  • A home or business at high risk: 4
  • At medium risk at worst: 10
  • At low risk at worst: 39
  • At very low risk only: 0
  • Not on the at-risk list: 1,209
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,262 postcodes in HA3 that ONS places, 4 have a home or business at high risk, 10 are at medium risk at worst, 39 are at low risk at worst and 1,209 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 51.5938, longitude -0.3209. 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.

HA3 0TR4 at high riskHA3 9NS4 at high riskHA3 9NR3 at high riskHA3 8EL1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. HA3 0TR, is the one with most homes and businesses at high risk.

What broadband can you get in HA3?

Ofcom reports on 1,224 of the 1,262 postcodes in HA3. At 1,043 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit1,043 of 1,224
Postcodes where every home can get superfast1,207 of 1,224

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is HA3 at risk of flooding?

53 of the 1,262 postcodes in HA3 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 50 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 53 of 1,262 postcodes High: 12Medium: 38Low: 423

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 HA3?

Homes in HA3 sold for a typical £558,000 in the 12 months to August 2026, across 257 sales, up 1.5% on the 12 months before, HM Land Registry's figures show.

£558,000 typical price, the 12 months to August 2026
£550,000 12 months to August 2025
▲ up 1.5% on the 12 months before
  • Detached £822,500 18 sales
  • Semi-detached £600,000 107 sales
  • Terraced £575,000 74 sales
  • Flat or maisonette £319,000 58 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 HA3

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

HA3 0215 postcodesHA3 323 postcodesHA3 5171 postcodesHA3 6212 postcodesHA3 7221 postcodesHA3 8204 postcodesHA3 9216 postcodes
UK postcode format explained

Places in HA3

Towns and villages with postcodes in HA3, and how many each has here.

Harrow postcodes,974Brent postcodes,280

Who covers HA3

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 East609
  • Harrow West340
  • Brent West288
  • Ruislip, Northwood and Pinner25

Police force areas

  • Metropolitan Police1,262

Next to HA3

HA2 postcode district HA4 postcode district All HA districts Harrow postcodes

"Next to" is by number: the districts before and after HA3 in the HA area.

Check a postcode

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