HA4 6 postcode sector in the HA4 district

HA4 6 is a sector of the HA4 district: every postcode that starts HA4 6. It has 225 postcodes in use, 4 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 6 sector, by flood risk

Map of every postcode in the HA4 6 sector, by flood risk Of the 225 postcodes in the HA4 6 sector that ONS places, 11 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 199 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: South Ruislip, Ruislip Manor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. HA4 6AA: not on the flood risk listHA4 6AB: not on the flood risk listHA4 6AD: not on the flood risk listHA4 6AE: not on the flood risk listHA4 6AF: not on the flood risk listHA4 6AG: not on the flood risk listHA4 6AH: not on the flood risk listHA4 6AJ: not on the flood risk listHA4 6AL: not on the flood risk listHA4 6AN: not on the flood risk listHA4 6AP: not on the flood risk listHA4 6AQ: not on the flood risk listHA4 6AS: not on the flood risk listHA4 6AT: not on the flood risk listHA4 6AU: not on the flood risk listHA4 6AW: not on the flood risk listHA4 6AX: not on the flood risk listHA4 6AY: not on the flood risk listHA4 6AZ: not on the flood risk listHA4 6BA: not on the flood risk listHA4 6BB: not on the flood risk listHA4 6BP: not on the flood risk listHA4 6BS: not on the flood risk listHA4 6BT: not on the flood risk listHA4 6BU: not on the flood risk listHA4 6BX: not on the flood risk listHA4 6BY: not on the flood risk listHA4 6BZ: not on the flood risk listHA4 6DA: not on the flood risk listHA4 6DB: not on the flood risk listHA4 6DD: not on the flood risk listHA4 6DE: not on the flood risk listHA4 6DF: not on the flood risk listHA4 6DG: not on the flood risk listHA4 6DH: not on the flood risk listHA4 6DL: not on the flood risk listHA4 6DQ: not on the flood risk listHA4 6DR: not on the flood risk listHA4 6DS: not on the flood risk listHA4 6DT: not on the flood risk listHA4 6DU: not on the flood risk listHA4 6DX: not on the flood risk listHA4 6DZ: not on the flood risk listHA4 6EB: not on the flood risk listHA4 6ED: not on the flood risk listHA4 6EE: not on the flood risk listHA4 6EF: not on the flood risk listHA4 6EG: not on the flood risk listHA4 6EH: not on the flood risk listHA4 6EJ: not on the flood risk listHA4 6EL: not on the flood risk listHA4 6EN: not on the flood risk listHA4 6EQ: not on the flood risk listHA4 6ER: not on the flood risk listHA4 6ES: not on the flood risk listHA4 6ET: not on the flood risk listHA4 6EU: not on the flood risk listHA4 6EW: not on the flood risk listHA4 6EX: not on the flood risk listHA4 6EY: not on the flood risk listHA4 6EZ: not on the flood risk listHA4 6HA: not on the flood risk listHA4 6HB: not on the flood risk listHA4 6HD: not on the flood risk listHA4 6HE: not on the flood risk listHA4 6HF: not on the flood risk listHA4 6HG: not on the flood risk listHA4 6HH: not on the flood risk listHA4 6HJ: not on the flood risk listHA4 6HL: not on the flood risk listHA4 6HN: not on the flood risk listHA4 6HP: not on the flood risk listHA4 6HQ: not on the flood risk listHA4 6HR: not on the flood risk listHA4 6HS: not on the flood risk listHA4 6HW: not on the flood risk listHA4 6JA: not on the flood risk listHA4 6JB: not on the flood risk listHA4 6JE: not on the flood risk listHA4 6JG: not on the flood risk listHA4 6JJ: not on the flood risk listHA4 6JL: not on the flood risk listHA4 6JN: not on the flood risk listHA4 6JP: not on the flood risk listHA4 6JQ: not on the flood risk listHA4 6JR: not on the flood risk listHA4 6JS: not on the flood risk listHA4 6JT: not on the flood risk listHA4 6JU: not on the flood risk listHA4 6JW: not on the flood risk listHA4 6JX: not on the flood risk listHA4 6JY: not on the flood risk listHA4 6JZ: not on the flood risk listHA4 6LA: not on the flood risk listHA4 6LB: not on the flood risk listHA4 6LD: not on the flood risk listHA4 6LE: not on the flood risk listHA4 6LF: not on the flood risk listHA4 6LG: not on the flood risk listHA4 6LL: not on the flood risk listHA4 6LN: not on the flood risk listHA4 6LQ: not on the flood risk listHA4 6LW: not on the flood risk listHA4 6LZ: not on the flood risk listHA4 6ND: not on the flood risk listHA4 6NJ: not on the flood risk listHA4 6NL: not on the flood risk listHA4 6NN: not on the flood risk listHA4 6NP: not on the flood risk listHA4 6NR: not on the flood risk listHA4 6NS: not on the flood risk listHA4 6NW: not on the flood risk listHA4 6PB: not on the flood risk listHA4 6PD: not on the flood risk listHA4 6PF: not on the flood risk listHA4 6PG: not on the flood risk listHA4 6PH: not on the flood risk listHA4 6PJ: not on the flood risk listHA4 6PL: not on the flood risk listHA4 6PQ: not on the flood risk listHA4 6PY: not on the flood risk listHA4 6QD: not on the flood risk listHA4 6QE: not on the flood risk listHA4 6QG: not on the flood risk listHA4 6QH: not on the flood risk listHA4 6QJ: not on the flood risk listHA4 6QL: not on the flood risk listHA4 6QN: not on the flood risk listHA4 6QP: not on the flood risk listHA4 6QQ: not on the flood risk listHA4 6QR: not on the flood risk listHA4 6QS: not on the flood risk listHA4 6QT: not on the flood risk listHA4 6QW: not on the flood risk listHA4 6QZ: not on the flood risk listHA4 6RA: not on the flood risk listHA4 6RB: not on the flood risk listHA4 6RD: not on the flood risk listHA4 6RE: not on the flood risk listHA4 6RF: not on the flood risk listHA4 6RG: not on the flood risk listHA4 6RJ: not on the flood risk listHA4 6RQ: not on the flood risk listHA4 6RS: not on the flood risk listHA4 6RT: not on the flood risk listHA4 6RU: not on the flood risk listHA4 6RW: not on the flood risk listHA4 6RX: not on the flood risk listHA4 6RY: not on the flood risk listHA4 6RZ: not on the flood risk listHA4 6SA: not on the flood risk listHA4 6SB: not on the flood risk listHA4 6SD: not on the flood risk listHA4 6SE: not on the flood risk listHA4 6SL: not on the flood risk listHA4 6SP: not on the flood risk listHA4 6SR: not on the flood risk listHA4 6SS: not on the flood risk listHA4 6ST: not on the flood risk listHA4 6SU: not on the flood risk listHA4 6SW: not on the flood risk listHA4 6SX: not on the flood risk listHA4 6SY: not on the flood risk listHA4 6SZ: not on the flood risk listHA4 6TA: not on the flood risk listHA4 6TD: not on the flood risk listHA4 6TE: not on the flood risk listHA4 6TF: not on the flood risk listHA4 6TJ: not on the flood risk listHA4 6TP: not on the flood risk listHA4 6TR: not on the flood risk listHA4 6TS: not on the flood risk listHA4 6TT: not on the flood risk listHA4 6TU: not on the flood risk listHA4 6TX: not on the flood risk listHA4 6TY: not on the flood risk listHA4 6TZ: not on the flood risk listHA4 6UA: not on the flood risk listHA4 6UB: not on the flood risk listHA4 6UD: not on the flood risk listHA4 6UE: not on the flood risk listHA4 6UF: not on the flood risk listHA4 6UG: not on the flood risk listHA4 6UH: not on the flood risk listHA4 6UJ: not on the flood risk listHA4 6UL: not on the flood risk listHA4 6UN: not on the flood risk listHA4 6UP: not on the flood risk listHA4 6UQ: not on the flood risk listHA4 6UT: not on the flood risk listHA4 6UW: not on the flood risk listHA4 6UX: not on the flood risk listHA4 6UY: not on the flood risk listHA4 6UZ: not on the flood risk listHA4 6XA: not on the flood risk listHA4 6XB: not on the flood risk listHA4 6XD: not on the flood risk listHA4 6XE: not on the flood risk listHA4 6DY: low flood risk at worstHA4 6EA: low flood risk at worstHA4 6LP: low flood risk at worstHA4 6LR: low flood risk at worstHA4 6LS: low flood risk at worstHA4 6NG: low flood risk at worstHA4 6PE: low flood risk at worstHA4 6QU: low flood risk at worstHA4 6QX: low flood risk at worstHA4 6RH: low flood risk at worstHA4 6LY: medium flood risk at worstHA4 6NA: medium flood risk at worstHA4 6NB: medium flood risk at worstHA4 6PP: medium flood risk at worstHA4 6PR: medium flood risk at worstHA4 6LT: high flood riskHA4 6LU: high flood riskHA4 6LX: high flood riskHA4 6NE: high flood riskHA4 6PA: high flood riskHA4 6PN: high flood riskHA4 6PS: high flood riskHA4 6PT: high flood riskHA4 6PU: high flood riskHA4 6PW: high flood riskHA4 6PX: high flood risk South RuislipRuislip Manor 16 postcodes at high or medium risk, outlined: this goes to HA4 6PS, the one with most homes and businesses at high risk16 postcodes at high or medium risk Map of every postcode in the HA4 6 sector, by flood risk Of the 225 postcodes in the HA4 6 sector that ONS places, 11 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 199 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: South Ruislip, Ruislip Manor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. South RuislipRuislip Manor
  • A home or business at high risk: 11
  • At medium risk at worst: 5
  • At low risk at worst: 10
  • At very low risk only: 0
  • Not on the at-risk list: 199
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 225 postcodes in the HA4 6 sector that ONS places, 11 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 199 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 6PS40 at high riskHA4 6PX30 at high riskHA4 6PN28 at high riskHA4 6LX19 at high riskHA4 6PU19 at high riskHA4 6NE14 at high riskHA4 6LU10 at high riskHA4 6PT9 at high riskHA4 6PA8 at high riskHA4 6PW7 at high riskHA4 6LT4 at high risk

Where the postcodes at high or medium risk lie together

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

What do homes sell for in HA4 6?

Homes in HA4 6 sold for a typical £535,000 in the 12 months to August 2026, across 99 sales, up 1.9% on the 12 months before, HM Land Registry's figures show.

£535,000 typical price, the 12 months to August 2026
£525,000 12 months to August 2025
▲ up 1.9% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £632,500 38 sales
  • Terraced £541,250 22 sales
  • Flat or maisonette £325,000 35 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 6. 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 6

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 6AAHA4 6ABHA4 6ADHA4 6AEHA4 6AFHA4 6AGHA4 6AHHA4 6AJHA4 6ALHA4 6ANHA4 6APHA4 6AQHA4 6ASHA4 6ATHA4 6AUHA4 6AWHA4 6AXHA4 6AYHA4 6AZHA4 6BAHA4 6BBHA4 6BPHA4 6BSHA4 6BTHA4 6BUHA4 6BXHA4 6BYHA4 6BZHA4 6DAHA4 6DBHA4 6DDHA4 6DEHA4 6DFHA4 6DGHA4 6DHHA4 6DLHA4 6DQHA4 6DRHA4 6DSHA4 6DTHA4 6DUHA4 6DXHA4 6DYHA4 6DZHA4 6EAHA4 6EBHA4 6EDHA4 6EEHA4 6EFHA4 6EGHA4 6EHHA4 6EJHA4 6ELHA4 6ENHA4 6EPHA4 6EQHA4 6ERHA4 6ESHA4 6ETHA4 6EUHA4 6EWHA4 6EXHA4 6EYHA4 6EZHA4 6HAHA4 6HBHA4 6HDHA4 6HEHA4 6HFHA4 6HGHA4 6HHHA4 6HJHA4 6HLHA4 6HNHA4 6HPHA4 6HQHA4 6HRHA4 6HSHA4 6HWHA4 6JAHA4 6JBHA4 6JEHA4 6JGHA4 6JJHA4 6JLHA4 6JNHA4 6JPHA4 6JQHA4 6JRHA4 6JSHA4 6JTHA4 6JUHA4 6JWHA4 6JXHA4 6JYHA4 6JZHA4 6LAHA4 6LBHA4 6LDHA4 6LEHA4 6LFHA4 6LGHA4 6LLHA4 6LNHA4 6LPHA4 6LQHA4 6LRHA4 6LSHA4 6LTHA4 6LUHA4 6LWHA4 6LXHA4 6LYHA4 6LZHA4 6NAHA4 6NBHA4 6NDHA4 6NEHA4 6NGHA4 6NJHA4 6NLHA4 6NNHA4 6NPHA4 6NRHA4 6NSHA4 6NWHA4 6PAHA4 6PBHA4 6PDHA4 6PEHA4 6PFHA4 6PGHA4 6PHHA4 6PJHA4 6PLHA4 6PNHA4 6PPHA4 6PQHA4 6PRHA4 6PSHA4 6PTHA4 6PUHA4 6PWHA4 6PXHA4 6PYHA4 6QDHA4 6QEHA4 6QGHA4 6QHHA4 6QJHA4 6QLHA4 6QNHA4 6QPHA4 6QQHA4 6QRHA4 6QSHA4 6QTHA4 6QUHA4 6QWHA4 6QXHA4 6QZHA4 6RAHA4 6RBHA4 6RDHA4 6REHA4 6RFHA4 6RGHA4 6RHHA4 6RJHA4 6RQHA4 6RSHA4 6RTHA4 6RUHA4 6RWHA4 6RXHA4 6RYHA4 6RZHA4 6SAHA4 6SBHA4 6SDHA4 6SEHA4 6SLHA4 6SPHA4 6SRHA4 6SSHA4 6STHA4 6SUHA4 6SWHA4 6SXHA4 6SYHA4 6SZHA4 6TAHA4 6TDHA4 6TEHA4 6TFHA4 6TJHA4 6TPHA4 6TRHA4 6TSHA4 6TTHA4 6TUHA4 6TXHA4 6TYHA4 6TZHA4 6UAHA4 6UBHA4 6UDHA4 6UEHA4 6UFHA4 6UGHA4 6UHHA4 6UJHA4 6ULHA4 6UNHA4 6UPHA4 6UQHA4 6UTHA4 6UWHA4 6UXHA4 6UYHA4 6UZHA4 6XAHA4 6XBHA4 6XDHA4 6XE

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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