HA4 8 postcode sector in the HA4 district

HA4 8 is a sector of the HA4 district: every postcode that starts HA4 8. It has 221 postcodes in use, 6 of them large-user postcodes. 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 HA4 8 sector, by flood risk

Map of every postcode in the HA4 8 sector, by flood risk Of the 221 postcodes in the HA4 8 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 6 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: 6 postcodes at high or medium risk. Places named: Ruislip, Eastcote. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HA4 8AJ: not on the flood risk listHA4 8AL: not on the flood risk listHA4 8AN: not on the flood risk listHA4 8AT: not on the flood risk listHA4 8AW: not on the flood risk listHA4 8AX: not on the flood risk listHA4 8AZ: not on the flood risk listHA4 8BD: not on the flood risk listHA4 8BE: not on the flood risk listHA4 8BG: not on the flood risk listHA4 8BH: not on the flood risk listHA4 8BJ: not on the flood risk listHA4 8BL: not on the flood risk listHA4 8BP: not on the flood risk listHA4 8BQ: not on the flood risk listHA4 8BT: not on the flood risk listHA4 8BU: not on the flood risk listHA4 8DG: not on the flood risk listHA4 8DH: not on the flood risk listHA4 8DL: not on the flood risk listHA4 8DN: not on the flood risk listHA4 8DP: not on the flood risk listHA4 8DQ: not on the flood risk listHA4 8DR: not on the flood risk listHA4 8DS: not on the flood risk listHA4 8DT: not on the flood risk listHA4 8DU: not on the flood risk listHA4 8DW: not on the flood risk listHA4 8DX: not on the flood risk listHA4 8DY: not on the flood risk listHA4 8DZ: not on the flood risk listHA4 8EA: not on the flood risk listHA4 8EB: not on the flood risk listHA4 8ED: not on the flood risk listHA4 8EE: not on the flood risk listHA4 8EF: not on the flood risk listHA4 8EG: not on the flood risk listHA4 8EH: not on the flood risk listHA4 8EJ: not on the flood risk listHA4 8EL: not on the flood risk listHA4 8EP: not on the flood risk listHA4 8EQ: not on the flood risk listHA4 8ER: not on the flood risk listHA4 8ES: not on the flood risk listHA4 8ET: not on the flood risk listHA4 8EU: not on the flood risk listHA4 8EW: not on the flood risk listHA4 8EX: not on the flood risk listHA4 8EY: not on the flood risk listHA4 8EZ: not on the flood risk listHA4 8FA: not on the flood risk listHA4 8FB: not on the flood risk listHA4 8FD: not on the flood risk listHA4 8FF: not on the flood risk listHA4 8FG: not on the flood risk listHA4 8FH: not on the flood risk listHA4 8FJ: not on the flood risk listHA4 8FL: not on the flood risk listHA4 8FN: not on the flood risk listHA4 8FP: not on the flood risk listHA4 8FQ: not on the flood risk listHA4 8FR: not on the flood risk listHA4 8FS: not on the flood risk listHA4 8FT: not on the flood risk listHA4 8FU: not on the flood risk listHA4 8FW: not on the flood risk listHA4 8FX: not on the flood risk listHA4 8FY: not on the flood risk listHA4 8FZ: not on the flood risk listHA4 8GA: not on the flood risk listHA4 8GB: not on the flood risk listHA4 8GD: not on the flood risk listHA4 8GE: not on the flood risk listHA4 8GF: not on the flood risk listHA4 8GG: not on the flood risk listHA4 8GH: not on the flood risk listHA4 8GJ: not on the flood risk listHA4 8GL: not on the flood risk listHA4 8GN: not on the flood risk listHA4 8GP: not on the flood risk listHA4 8GR: not on the flood risk listHA4 8GS: not on the flood risk listHA4 8GT: not on the flood risk listHA4 8GU: not on the flood risk listHA4 8GW: not on the flood risk listHA4 8GX: not on the flood risk listHA4 8GY: not on the flood risk listHA4 8HA: not on the flood risk listHA4 8HB: not on the flood risk listHA4 8HD: not on the flood risk listHA4 8HE: not on the flood risk listHA4 8HF: not on the flood risk listHA4 8HG: not on the flood risk listHA4 8HJ: not on the flood risk listHA4 8HL: not on the flood risk listHA4 8HP: not on the flood risk listHA4 8HQ: not on the flood risk listHA4 8HR: not on the flood risk listHA4 8HS: not on the flood risk listHA4 8HW: not on the flood risk listHA4 8JB: not on the flood risk listHA4 8JE: not on the flood risk listHA4 8JN: not on the flood risk listHA4 8JR: not on the flood risk listHA4 8JS: not on the flood risk listHA4 8JT: not on the flood risk listHA4 8JU: not on the flood risk listHA4 8JX: not on the flood risk listHA4 8JY: not on the flood risk listHA4 8LB: not on the flood risk listHA4 8LD: not on the flood risk listHA4 8LG: not on the flood risk listHA4 8LJ: not on the flood risk listHA4 8LL: not on the flood risk listHA4 8LS: not on the flood risk listHA4 8ND: not on the flood risk listHA4 8NE: not on the flood risk listHA4 8NF: not on the flood risk listHA4 8NH: not on the flood risk listHA4 8NL: not on the flood risk listHA4 8NN: not on the flood risk listHA4 8NP: not on the flood risk listHA4 8NQ: not on the flood risk listHA4 8NR: not on the flood risk listHA4 8NS: not on the flood risk listHA4 8NU: not on the flood risk listHA4 8NW: not on the flood risk listHA4 8NY: not on the flood risk listHA4 8NZ: not on the flood risk listHA4 8PA: not on the flood risk listHA4 8PB: not on the flood risk listHA4 8PD: not on the flood risk listHA4 8PE: not on the flood risk listHA4 8PG: not on the flood risk listHA4 8PH: not on the flood risk listHA4 8PJ: not on the flood risk listHA4 8PP: not on the flood risk listHA4 8PQ: not on the flood risk listHA4 8PR: not on the flood risk listHA4 8PT: not on the flood risk listHA4 8PU: not on the flood risk listHA4 8PX: not on the flood risk listHA4 8PY: not on the flood risk listHA4 8QE: not on the flood risk listHA4 8QF: not on the flood risk listHA4 8QG: not on the flood risk listHA4 8QH: not on the flood risk listHA4 8QJ: not on the flood risk listHA4 8QL: not on the flood risk listHA4 8QN: not on the flood risk listHA4 8QP: not on the flood risk listHA4 8QQ: not on the flood risk listHA4 8QR: not on the flood risk listHA4 8QS: not on the flood risk listHA4 8QT: not on the flood risk listHA4 8QU: not on the flood risk listHA4 8QW: not on the flood risk listHA4 8QX: not on the flood risk listHA4 8QY: not on the flood risk listHA4 8RG: not on the flood risk listHA4 8RH: not on the flood risk listHA4 8RJ: not on the flood risk listHA4 8RL: not on the flood risk listHA4 8RN: not on the flood risk listHA4 8RQ: not on the flood risk listHA4 8RW: not on the flood risk listHA4 8RX: not on the flood risk listHA4 8RY: not on the flood risk listHA4 8RZ: not on the flood risk listHA4 8SA: not on the flood risk listHA4 8SB: not on the flood risk listHA4 8SD: not on the flood risk listHA4 8SL: not on the flood risk listHA4 8SN: not on the flood risk listHA4 8SP: not on the flood risk listHA4 8SR: not on the flood risk listHA4 8SS: not on the flood risk listHA4 8ST: not on the flood risk listHA4 8SU: not on the flood risk listHA4 8SW: not on the flood risk listHA4 8SX: not on the flood risk listHA4 8SY: not on the flood risk listHA4 8SZ: not on the flood risk listHA4 8TA: not on the flood risk listHA4 8TB: not on the flood risk listHA4 8TD: not on the flood risk listHA4 8TE: not on the flood risk listHA4 8TN: not on the flood risk listHA4 8TP: not on the flood risk listHA4 8TR: not on the flood risk listHA4 8TS: not on the flood risk listHA4 8TT: not on the flood risk listHA4 8TU: not on the flood risk listHA4 8TW: not on the flood risk listHA4 8TX: not on the flood risk listHA4 8TY: not on the flood risk listHA4 8TZ: not on the flood risk listHA4 8UA: not on the flood risk listHA4 8UB: not on the flood risk listHA4 8UD: not on the flood risk listHA4 8UE: not on the flood risk listHA4 8UF: not on the flood risk listHA4 8UG: not on the flood risk listHA4 8UH: not on the flood risk listHA4 8UQ: not on the flood risk listHA4 8AH: low flood risk at worstHA4 8AQ: low flood risk at worstHA4 8AR: low flood risk at worstHA4 8AS: low flood risk at worstHA4 8BN: low flood risk at worstHA4 8BW: low flood risk at worstHA4 8AD: medium flood risk at worstHA4 8AA: high flood riskHA4 8AB: high flood riskHA4 8AE: high flood riskHA4 8AF: high flood riskHA4 8AG: high flood riskHA4 8AP: high flood risk RuislipEastcote 6 postcodes at high or medium risk, outlined: this goes to HA4 8AG, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in the HA4 8 sector, by flood risk Of the 221 postcodes in the HA4 8 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 6 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: 6 postcodes at high or medium risk. Places named: Ruislip, Eastcote. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. RuislipEastcote
  • A home or business at high risk: 6
  • At medium risk at worst: 1
  • At low risk at worst: 6
  • 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 221 postcodes in the HA4 8 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 6 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. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

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.

HA4 8AG15 at high riskHA4 8AF9 at high riskHA4 8AA8 at high riskHA4 8AB5 at high riskHA4 8AE5 at high riskHA4 8AP4 at high risk

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. HA4 8AG, is the one with most homes and businesses at high risk.

What do homes sell for in HA4 8?

Homes in HA4 8 sold for a typical £630,000 in the 12 months to August 2026, across 75 sales, down 9% on the 12 months before, HM Land Registry's figures show.

£630,000 typical price, the 12 months to August 2026
£692,500 12 months to August 2025
▼ down 9% on the 12 months before
  • Detached £830,000 21 sales
  • Semi-detached £765,000 20 sales
  • Terraced £605,000 7 sales
  • Flat or maisonette £295,000 27 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 HA4 8. 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 HA4 8

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.

HA4 8AAHA4 8ABHA4 8ADHA4 8AEHA4 8AFHA4 8AGHA4 8AHHA4 8AJHA4 8ALHA4 8ANHA4 8APHA4 8AQHA4 8ARHA4 8ASHA4 8ATHA4 8AWHA4 8AXHA4 8AZHA4 8BDHA4 8BEHA4 8BGHA4 8BHHA4 8BJHA4 8BLHA4 8BNHA4 8BPHA4 8BQHA4 8BTHA4 8BUHA4 8BWHA4 8DGHA4 8DHHA4 8DLHA4 8DNHA4 8DPHA4 8DQHA4 8DRHA4 8DSHA4 8DTHA4 8DUHA4 8DWHA4 8DXHA4 8DYHA4 8DZHA4 8EAHA4 8EBHA4 8EDHA4 8EEHA4 8EFHA4 8EGHA4 8EHHA4 8EJHA4 8ELHA4 8EPHA4 8EQHA4 8ERHA4 8ESHA4 8ETHA4 8EUHA4 8EWHA4 8EXHA4 8EYHA4 8EZHA4 8FAHA4 8FBHA4 8FDHA4 8FEHA4 8FFHA4 8FGHA4 8FHHA4 8FJHA4 8FLHA4 8FNHA4 8FPHA4 8FQHA4 8FRHA4 8FSHA4 8FTHA4 8FUHA4 8FWHA4 8FXHA4 8FYHA4 8FZHA4 8GAHA4 8GBHA4 8GDHA4 8GEHA4 8GFHA4 8GGHA4 8GHHA4 8GJHA4 8GLHA4 8GNHA4 8GPHA4 8GRHA4 8GSHA4 8GTHA4 8GUHA4 8GWHA4 8GXHA4 8GYHA4 8HAHA4 8HBHA4 8HDHA4 8HEHA4 8HFHA4 8HGHA4 8HJHA4 8HLHA4 8HPHA4 8HQHA4 8HRHA4 8HSHA4 8HWHA4 8JBHA4 8JEHA4 8JNHA4 8JRHA4 8JSHA4 8JTHA4 8JUHA4 8JXHA4 8JYHA4 8LBHA4 8LDHA4 8LGHA4 8LJHA4 8LLHA4 8LSHA4 8NDHA4 8NEHA4 8NFHA4 8NHHA4 8NJHA4 8NLHA4 8NNHA4 8NPHA4 8NQHA4 8NRHA4 8NSHA4 8NUHA4 8NWHA4 8NYHA4 8NZHA4 8PAHA4 8PBHA4 8PDHA4 8PEHA4 8PGHA4 8PHHA4 8PJHA4 8PPHA4 8PQHA4 8PRHA4 8PTHA4 8PUHA4 8PXHA4 8PYHA4 8QEHA4 8QFHA4 8QGHA4 8QHHA4 8QJHA4 8QLHA4 8QNHA4 8QPHA4 8QQHA4 8QRHA4 8QSHA4 8QTHA4 8QUHA4 8QWHA4 8QXHA4 8QYHA4 8RGHA4 8RHHA4 8RJHA4 8RLHA4 8RNHA4 8RQHA4 8RWHA4 8RXHA4 8RYHA4 8RZHA4 8SAHA4 8SBHA4 8SDHA4 8SLHA4 8SNHA4 8SPHA4 8SRHA4 8SSHA4 8STHA4 8SUHA4 8SWHA4 8SXHA4 8SYHA4 8SZHA4 8TAHA4 8TBHA4 8TDHA4 8TEHA4 8TNHA4 8TPHA4 8TRHA4 8TSHA4 8TTHA4 8TUHA4 8TWHA4 8TXHA4 8TYHA4 8TZHA4 8UAHA4 8UBHA4 8UDHA4 8UEHA4 8UFHA4 8UGHA4 8UHHA4 8UQHA4 8ZN

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.

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