HA7 3 postcode sector in the HA7 district

HA7 3 is a sector of the HA7 district: every postcode that starts HA7 3. It has 237 postcodes in use, one of them a large-user postcode. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the HA7 3 sector, by flood risk

Map of every postcode in the HA7 3 sector, by flood risk Of the 237 postcodes in the HA7 3 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 8 are at low risk at worst and 208 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 16 postcodes at high or medium risk. Places named: Stanmore. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A409 HA7 3AA: not on the flood risk listHA7 3AB: not on the flood risk listHA7 3AD: not on the flood risk listHA7 3AE: not on the flood risk listHA7 3AF: not on the flood risk listHA7 3AG: not on the flood risk listHA7 3AH: not on the flood risk listHA7 3AJ: not on the flood risk listHA7 3AL: not on the flood risk listHA7 3AN: not on the flood risk listHA7 3AP: not on the flood risk listHA7 3AQ: not on the flood risk listHA7 3AR: not on the flood risk listHA7 3AS: not on the flood risk listHA7 3AT: not on the flood risk listHA7 3AU: not on the flood risk listHA7 3AW: not on the flood risk listHA7 3AX: not on the flood risk listHA7 3AY: not on the flood risk listHA7 3AZ: not on the flood risk listHA7 3BA: not on the flood risk listHA7 3BE: not on the flood risk listHA7 3BG: not on the flood risk listHA7 3BJ: not on the flood risk listHA7 3BL: not on the flood risk listHA7 3BN: not on the flood risk listHA7 3BP: not on the flood risk listHA7 3BQ: not on the flood risk listHA7 3BS: not on the flood risk listHA7 3BT: not on the flood risk listHA7 3BU: not on the flood risk listHA7 3BW: not on the flood risk listHA7 3BX: not on the flood risk listHA7 3BY: not on the flood risk listHA7 3BZ: not on the flood risk listHA7 3DA: not on the flood risk listHA7 3DB: not on the flood risk listHA7 3DD: not on the flood risk listHA7 3DE: not on the flood risk listHA7 3DF: not on the flood risk listHA7 3DG: not on the flood risk listHA7 3DJ: not on the flood risk listHA7 3DP: not on the flood risk listHA7 3DQ: not on the flood risk listHA7 3DR: not on the flood risk listHA7 3DS: not on the flood risk listHA7 3DT: not on the flood risk listHA7 3DU: not on the flood risk listHA7 3DX: not on the flood risk listHA7 3DY: not on the flood risk listHA7 3DZ: not on the flood risk listHA7 3EA: not on the flood risk listHA7 3EB: not on the flood risk listHA7 3ED: not on the flood risk listHA7 3EE: not on the flood risk listHA7 3EF: not on the flood risk listHA7 3EG: not on the flood risk listHA7 3EH: not on the flood risk listHA7 3EJ: not on the flood risk listHA7 3EL: not on the flood risk listHA7 3EN: not on the flood risk listHA7 3EP: not on the flood risk listHA7 3EQ: not on the flood risk listHA7 3ER: not on the flood risk listHA7 3ES: not on the flood risk listHA7 3EW: not on the flood risk listHA7 3EX: not on the flood risk listHA7 3FB: not on the flood risk listHA7 3FD: not on the flood risk listHA7 3FN: not on the flood risk listHA7 3FP: not on the flood risk listHA7 3FQ: not on the flood risk listHA7 3FR: not on the flood risk listHA7 3FS: not on the flood risk listHA7 3FT: not on the flood risk listHA7 3FU: not on the flood risk listHA7 3FW: not on the flood risk listHA7 3FY: not on the flood risk listHA7 3GA: not on the flood risk listHA7 3GB: not on the flood risk listHA7 3GD: not on the flood risk listHA7 3GE: not on the flood risk listHA7 3GF: not on the flood risk listHA7 3GG: not on the flood risk listHA7 3GH: not on the flood risk listHA7 3GL: not on the flood risk listHA7 3HA: not on the flood risk listHA7 3HD: not on the flood risk listHA7 3HF: not on the flood risk listHA7 3HG: not on the flood risk listHA7 3HJ: not on the flood risk listHA7 3HL: not on the flood risk listHA7 3HN: not on the flood risk listHA7 3HP: not on the flood risk listHA7 3HQ: not on the flood risk listHA7 3HR: not on the flood risk listHA7 3HS: not on the flood risk listHA7 3HT: not on the flood risk listHA7 3HU: not on the flood risk listHA7 3HW: not on the flood risk listHA7 3HX: not on the flood risk listHA7 3HZ: not on the flood risk listHA7 3JA: not on the flood risk listHA7 3JB: not on the flood risk listHA7 3JD: not on the flood risk listHA7 3JF: not on the flood risk listHA7 3JG: not on the flood risk listHA7 3JJ: not on the flood risk listHA7 3JL: not on the flood risk listHA7 3JP: not on the flood risk listHA7 3JQ: not on the flood risk listHA7 3JR: not on the flood risk listHA7 3JS: not on the flood risk listHA7 3JW: not on the flood risk listHA7 3JY: not on the flood risk listHA7 3LA: not on the flood risk listHA7 3LB: not on the flood risk listHA7 3LD: not on the flood risk listHA7 3LE: not on the flood risk listHA7 3LF: not on the flood risk listHA7 3LJ: not on the flood risk listHA7 3LL: not on the flood risk listHA7 3LN: not on the flood risk listHA7 3LP: not on the flood risk listHA7 3LS: not on the flood risk listHA7 3LT: not on the flood risk listHA7 3LU: not on the flood risk listHA7 3LW: not on the flood risk listHA7 3NA: not on the flood risk listHA7 3NB: not on the flood risk listHA7 3ND: not on the flood risk listHA7 3NE: not on the flood risk listHA7 3NF: not on the flood risk listHA7 3NG: not on the flood risk listHA7 3NH: not on the flood risk listHA7 3NJ: not on the flood risk listHA7 3NL: not on the flood risk listHA7 3NN: not on the flood risk listHA7 3NP: not on the flood risk listHA7 3NQ: not on the flood risk listHA7 3NR: not on the flood risk listHA7 3NU: not on the flood risk listHA7 3NW: not on the flood risk listHA7 3NX: not on the flood risk listHA7 3NY: not on the flood risk listHA7 3NZ: not on the flood risk listHA7 3PA: not on the flood risk listHA7 3PB: not on the flood risk listHA7 3PD: not on the flood risk listHA7 3PE: not on the flood risk listHA7 3PF: not on the flood risk listHA7 3PG: not on the flood risk listHA7 3PH: not on the flood risk listHA7 3PJ: not on the flood risk listHA7 3PL: not on the flood risk listHA7 3PN: not on the flood risk listHA7 3PP: not on the flood risk listHA7 3PQ: not on the flood risk listHA7 3PR: not on the flood risk listHA7 3PS: not on the flood risk listHA7 3PT: not on the flood risk listHA7 3PW: not on the flood risk listHA7 3PY: not on the flood risk listHA7 3PZ: not on the flood risk listHA7 3QG: not on the flood risk listHA7 3QH: not on the flood risk listHA7 3QJ: not on the flood risk listHA7 3QL: not on the flood risk listHA7 3QN: not on the flood risk listHA7 3QP: not on the flood risk listHA7 3QQ: not on the flood risk listHA7 3QR: not on the flood risk listHA7 3QS: not on the flood risk listHA7 3QT: not on the flood risk listHA7 3QU: not on the flood risk listHA7 3QW: not on the flood risk listHA7 3QX: not on the flood risk listHA7 3QY: not on the flood risk listHA7 3QZ: not on the flood risk listHA7 3RA: not on the flood risk listHA7 3RB: not on the flood risk listHA7 3RD: not on the flood risk listHA7 3RE: not on the flood risk listHA7 3RF: not on the flood risk listHA7 3RH: not on the flood risk listHA7 3RJ: not on the flood risk listHA7 3RL: not on the flood risk listHA7 3RN: not on the flood risk listHA7 3RQ: not on the flood risk listHA7 3RS: not on the flood risk listHA7 3RT: not on the flood risk listHA7 3RU: not on the flood risk listHA7 3RX: not on the flood risk listHA7 3RY: not on the flood risk listHA7 3RZ: not on the flood risk listHA7 3SA: not on the flood risk listHA7 3SB: not on the flood risk listHA7 3SD: not on the flood risk listHA7 3SL: not on the flood risk listHA7 3SN: not on the flood risk listHA7 3ST: not on the flood risk listHA7 3SU: not on the flood risk listHA7 3SY: not on the flood risk listHA7 3TA: not on the flood risk listHA7 3TJ: not on the flood risk listHA7 3TL: not on the flood risk listHA7 3TN: not on the flood risk listHA7 3UH: not on the flood risk listHA7 3FA: low flood risk at worstHA7 3LH: low flood risk at worstHA7 3LY: low flood risk at worstHA7 3LZ: low flood risk at worstHA7 3NS: low flood risk at worstHA7 3QF: low flood risk at worstHA7 3SJ: low flood risk at worstHA7 3SW: low flood risk at worstHA7 3FL: medium flood risk at worstHA7 3JT: medium flood risk at worstHA7 3LX: medium flood risk at worstHA7 3QA: medium flood risk at worstHA7 3SQ: medium flood risk at worstHA7 3SZ: medium flood risk at worstHA7 3FE: high flood riskHA7 3FF: high flood riskHA7 3FJ: high flood riskHA7 3LG: high flood riskHA7 3LQ: high flood riskHA7 3QD: high flood riskHA7 3QE: high flood riskHA7 3RG: high flood riskHA7 3RP: high flood riskHA7 3RR: high flood riskHA7 3SE: high flood riskHA7 3SF: high flood riskHA7 3SH: high flood riskHA7 3SR: high flood riskHA7 3SS: high flood risk Stanmore 16 postcodes at high or medium risk, outlined: this goes to HA7 3SF, the one with most homes and businesses at high risk16 postcodes at high or medium risk Map of every postcode in the HA7 3 sector, by flood risk Of the 237 postcodes in the HA7 3 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 8 are at low risk at worst and 208 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 16 postcodes at high or medium risk. Places named: Stanmore. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Stanmore
  • A home or business at high risk: 15
  • At medium risk at worst: 6
  • At low risk at worst: 8
  • At very low risk only: 0
  • Not on the at-risk list: 208
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 237 postcodes in the HA7 3 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 8 are at low risk at worst and 208 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. Names in italics are council wards: we hold no town or village names here.

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

15 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

HA7 3SF28 at high riskHA7 3RP19 at high riskHA7 3SS17 at high riskHA7 3QE14 at high riskHA7 3SE14 at high riskHA7 3FF12 at high riskHA7 3LG12 at high riskHA7 3SR12 at high riskHA7 3RR10 at high riskHA7 3FJ10 at high riskHA7 3RG8 at high riskHA7 3SH6 at high risk

Where the postcodes at high or medium risk lie together

  • 16 postcodes at high or medium risk, outlined on the map. HA7 3SF, is the one with most homes and businesses at high risk.

What do homes sell for in HA7 3?

Homes in HA7 3 sold for a typical £747,500 in the 12 months to August 2026, across 68 sales, up 12.4% on the 12 months before, HM Land Registry's figures show.

£747,500 typical price, the 12 months to August 2026
£665,000 12 months to August 2025
▲ up 12.4% on the 12 months before
  • Detached £1,075,000 26 sales
  • Semi-detached £645,000 20 sales
  • Terraced £672,500 9 sales
  • Flat or maisonette £425,000 13 sales

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

Standard sales of homes at market value at the postcodes that start HA7 3. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 HA7 3

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

HA7 3AAHA7 3ABHA7 3ADHA7 3AEHA7 3AFHA7 3AGHA7 3AHHA7 3AJHA7 3ALHA7 3ANHA7 3APHA7 3AQHA7 3ARHA7 3ASHA7 3ATHA7 3AUHA7 3AWHA7 3AXHA7 3AYHA7 3AZHA7 3BAHA7 3BEHA7 3BGHA7 3BJHA7 3BLHA7 3BNHA7 3BPHA7 3BQHA7 3BSHA7 3BTHA7 3BUHA7 3BWHA7 3BXHA7 3BYHA7 3BZHA7 3DAHA7 3DBHA7 3DDHA7 3DEHA7 3DFHA7 3DGHA7 3DJHA7 3DPHA7 3DQHA7 3DRHA7 3DSHA7 3DTHA7 3DUHA7 3DXHA7 3DYHA7 3DZHA7 3EAHA7 3EBHA7 3EDHA7 3EEHA7 3EFHA7 3EGHA7 3EHHA7 3EJHA7 3ELHA7 3ENHA7 3EPHA7 3EQHA7 3ERHA7 3ESHA7 3EWHA7 3EXHA7 3FAHA7 3FBHA7 3FDHA7 3FEHA7 3FFHA7 3FJHA7 3FLHA7 3FNHA7 3FPHA7 3FQHA7 3FRHA7 3FSHA7 3FTHA7 3FUHA7 3FWHA7 3FYHA7 3GAHA7 3GBHA7 3GDHA7 3GEHA7 3GFHA7 3GGHA7 3GHHA7 3GLHA7 3HAHA7 3HDHA7 3HFHA7 3HGHA7 3HJHA7 3HLHA7 3HNHA7 3HPHA7 3HQHA7 3HRHA7 3HSHA7 3HTHA7 3HUHA7 3HWHA7 3HXHA7 3HZHA7 3JAHA7 3JBHA7 3JDHA7 3JFHA7 3JGHA7 3JJHA7 3JLHA7 3JPHA7 3JQHA7 3JRHA7 3JSHA7 3JTHA7 3JWHA7 3JYHA7 3LAHA7 3LBHA7 3LDHA7 3LEHA7 3LFHA7 3LGHA7 3LHHA7 3LJHA7 3LLHA7 3LNHA7 3LPHA7 3LQHA7 3LSHA7 3LTHA7 3LUHA7 3LWHA7 3LXHA7 3LYHA7 3LZHA7 3NAHA7 3NBHA7 3NDHA7 3NEHA7 3NFHA7 3NGHA7 3NHHA7 3NJHA7 3NLHA7 3NNHA7 3NPHA7 3NQHA7 3NRHA7 3NSHA7 3NUHA7 3NWHA7 3NXHA7 3NYHA7 3NZHA7 3PAHA7 3PBHA7 3PDHA7 3PEHA7 3PFHA7 3PGHA7 3PHHA7 3PJHA7 3PLHA7 3PNHA7 3PPHA7 3PQHA7 3PRHA7 3PSHA7 3PTHA7 3PWHA7 3PYHA7 3PZHA7 3QAHA7 3QDHA7 3QEHA7 3QFHA7 3QGHA7 3QHHA7 3QJHA7 3QLHA7 3QNHA7 3QPHA7 3QQHA7 3QRHA7 3QSHA7 3QTHA7 3QUHA7 3QWHA7 3QXHA7 3QYHA7 3QZHA7 3RAHA7 3RBHA7 3RDHA7 3REHA7 3RFHA7 3RGHA7 3RHHA7 3RJHA7 3RLHA7 3RNHA7 3RPHA7 3RQHA7 3RRHA7 3RSHA7 3RTHA7 3RUHA7 3RXHA7 3RYHA7 3RZHA7 3SAHA7 3SBHA7 3SDHA7 3SEHA7 3SFHA7 3SHHA7 3SJHA7 3SLHA7 3SNHA7 3SQHA7 3SRHA7 3SSHA7 3STHA7 3SUHA7 3SWHA7 3SYHA7 3SZHA7 3TAHA7 3TJHA7 3TLHA7 3TNHA7 3UH

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

Check a postcode

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