HA5 3 postcode sector in the HA5 district

HA5 3 is a sector of the HA5 district: every postcode that starts HA5 3. It has 266 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 HA5 3 sector, by flood risk

Map of every postcode in the HA5 3 sector, by flood risk Of the 266 postcodes in the HA5 3 sector that ONS places, 9 have a home or business at high risk, 9 are at medium risk at worst, 7 are at low risk at worst, 2 are at very low risk only and 239 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 7 postcodes at high or medium risk. Places named: Pinner. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A404 HA5 3AA: not on the flood risk listHA5 3AB: not on the flood risk listHA5 3AD: not on the flood risk listHA5 3AE: not on the flood risk listHA5 3AF: not on the flood risk listHA5 3AG: not on the flood risk listHA5 3AH: not on the flood risk listHA5 3AJ: not on the flood risk listHA5 3AL: not on the flood risk listHA5 3AN: not on the flood risk listHA5 3AP: not on the flood risk listHA5 3AQ: not on the flood risk listHA5 3AR: not on the flood risk listHA5 3AS: not on the flood risk listHA5 3AT: not on the flood risk listHA5 3AW: not on the flood risk listHA5 3AX: not on the flood risk listHA5 3BA: not on the flood risk listHA5 3BB: not on the flood risk listHA5 3BD: not on the flood risk listHA5 3BE: not on the flood risk listHA5 3BG: not on the flood risk listHA5 3BH: not on the flood risk listHA5 3BJ: not on the flood risk listHA5 3BL: not on the flood risk listHA5 3BN: not on the flood risk listHA5 3BP: not on the flood risk listHA5 3BQ: not on the flood risk listHA5 3BS: not on the flood risk listHA5 3BU: not on the flood risk listHA5 3DA: not on the flood risk listHA5 3DB: not on the flood risk listHA5 3DD: not on the flood risk listHA5 3DE: not on the flood risk listHA5 3DF: not on the flood risk listHA5 3DG: not on the flood risk listHA5 3DH: not on the flood risk listHA5 3DJ: not on the flood risk listHA5 3DL: not on the flood risk listHA5 3DN: not on the flood risk listHA5 3DP: not on the flood risk listHA5 3DQ: not on the flood risk listHA5 3DR: not on the flood risk listHA5 3DT: not on the flood risk listHA5 3DW: not on the flood risk listHA5 3DY: not on the flood risk listHA5 3DZ: not on the flood risk listHA5 3EA: not on the flood risk listHA5 3ED: not on the flood risk listHA5 3EF: not on the flood risk listHA5 3EH: not on the flood risk listHA5 3EJ: not on the flood risk listHA5 3EL: not on the flood risk listHA5 3EN: not on the flood risk listHA5 3EP: not on the flood risk listHA5 3EU: not on the flood risk listHA5 3EW: not on the flood risk listHA5 3EX: not on the flood risk listHA5 3EY: not on the flood risk listHA5 3FF: not on the flood risk listHA5 3FG: not on the flood risk listHA5 3FQ: not on the flood risk listHA5 3GY: not on the flood risk listHA5 3HE: not on the flood risk listHA5 3HG: not on the flood risk listHA5 3HH: not on the flood risk listHA5 3HJ: not on the flood risk listHA5 3HN: not on the flood risk listHA5 3HX: not on the flood risk listHA5 3HZ: not on the flood risk listHA5 3JA: not on the flood risk listHA5 3JB: not on the flood risk listHA5 3JF: not on the flood risk listHA5 3JL: not on the flood risk listHA5 3JS: not on the flood risk listHA5 3JT: not on the flood risk listHA5 3JU: not on the flood risk listHA5 3LA: not on the flood risk listHA5 3LD: not on the flood risk listHA5 3LE: not on the flood risk listHA5 3LF: not on the flood risk listHA5 3LG: not on the flood risk listHA5 3LH: not on the flood risk listHA5 3LJ: not on the flood risk listHA5 3LL: not on the flood risk listHA5 3LN: not on the flood risk listHA5 3LP: not on the flood risk listHA5 3LQ: not on the flood risk listHA5 3LR: not on the flood risk listHA5 3LT: not on the flood risk listHA5 3LU: not on the flood risk listHA5 3LW: not on the flood risk listHA5 3LX: not on the flood risk listHA5 3LY: not on the flood risk listHA5 3LZ: not on the flood risk listHA5 3NF: not on the flood risk listHA5 3NG: not on the flood risk listHA5 3NH: not on the flood risk listHA5 3NJ: not on the flood risk listHA5 3NL: not on the flood risk listHA5 3NN: not on the flood risk listHA5 3NP: not on the flood risk listHA5 3NQ: not on the flood risk listHA5 3NR: not on the flood risk listHA5 3NS: not on the flood risk listHA5 3NT: not on the flood risk listHA5 3NU: not on the flood risk listHA5 3NW: not on the flood risk listHA5 3NX: not on the flood risk listHA5 3NY: not on the flood risk listHA5 3NZ: not on the flood risk listHA5 3PA: not on the flood risk listHA5 3PB: not on the flood risk listHA5 3PD: not on the flood risk listHA5 3PE: not on the flood risk listHA5 3PF: not on the flood risk listHA5 3PG: not on the flood risk listHA5 3PH: not on the flood risk listHA5 3PJ: not on the flood risk listHA5 3PL: not on the flood risk listHA5 3PQ: not on the flood risk listHA5 3PR: not on the flood risk listHA5 3PS: not on the flood risk listHA5 3PT: not on the flood risk listHA5 3PU: not on the flood risk listHA5 3PY: not on the flood risk listHA5 3PZ: not on the flood risk listHA5 3QA: not on the flood risk listHA5 3QB: not on the flood risk listHA5 3QD: not on the flood risk listHA5 3QE: not on the flood risk listHA5 3QF: not on the flood risk listHA5 3QG: not on the flood risk listHA5 3QH: not on the flood risk listHA5 3QJ: not on the flood risk listHA5 3QL: not on the flood risk listHA5 3QN: not on the flood risk listHA5 3QP: not on the flood risk listHA5 3QQ: not on the flood risk listHA5 3QR: not on the flood risk listHA5 3QS: not on the flood risk listHA5 3QT: not on the flood risk listHA5 3QW: not on the flood risk listHA5 3RA: not on the flood risk listHA5 3RB: not on the flood risk listHA5 3RD: not on the flood risk listHA5 3RE: not on the flood risk listHA5 3RF: not on the flood risk listHA5 3RJ: not on the flood risk listHA5 3RL: not on the flood risk listHA5 3RN: not on the flood risk listHA5 3RP: not on the flood risk listHA5 3RT: not on the flood risk listHA5 3RU: not on the flood risk listHA5 3RW: not on the flood risk listHA5 3RX: not on the flood risk listHA5 3RY: not on the flood risk listHA5 3RZ: not on the flood risk listHA5 3SA: not on the flood risk listHA5 3SB: not on the flood risk listHA5 3SD: not on the flood risk listHA5 3SE: not on the flood risk listHA5 3SG: not on the flood risk listHA5 3SH: not on the flood risk listHA5 3SJ: not on the flood risk listHA5 3SL: not on the flood risk listHA5 3SN: not on the flood risk listHA5 3SP: not on the flood risk listHA5 3SQ: not on the flood risk listHA5 3SR: not on the flood risk listHA5 3SW: not on the flood risk listHA5 3SX: not on the flood risk listHA5 3SY: not on the flood risk listHA5 3SZ: not on the flood risk listHA5 3TA: not on the flood risk listHA5 3TB: not on the flood risk listHA5 3TD: not on the flood risk listHA5 3TE: not on the flood risk listHA5 3TG: not on the flood risk listHA5 3TH: not on the flood risk listHA5 3TJ: not on the flood risk listHA5 3TN: not on the flood risk listHA5 3TP: not on the flood risk listHA5 3TQ: not on the flood risk listHA5 3TW: not on the flood risk listHA5 3TX: not on the flood risk listHA5 3TY: not on the flood risk listHA5 3TZ: not on the flood risk listHA5 3UA: not on the flood risk listHA5 3UB: not on the flood risk listHA5 3UD: not on the flood risk listHA5 3UE: not on the flood risk listHA5 3UF: not on the flood risk listHA5 3UG: not on the flood risk listHA5 3UH: not on the flood risk listHA5 3UJ: not on the flood risk listHA5 3UN: not on the flood risk listHA5 3UP: not on the flood risk listHA5 3UQ: not on the flood risk listHA5 3UR: not on the flood risk listHA5 3UT: not on the flood risk listHA5 3UU: not on the flood risk listHA5 3UX: not on the flood risk listHA5 3UY: not on the flood risk listHA5 3UZ: not on the flood risk listHA5 3WW: not on the flood risk listHA5 3WX: not on the flood risk listHA5 3XA: not on the flood risk listHA5 3XB: not on the flood risk listHA5 3XD: not on the flood risk listHA5 3XE: not on the flood risk listHA5 3XF: not on the flood risk listHA5 3XG: not on the flood risk listHA5 3XH: not on the flood risk listHA5 3XJ: not on the flood risk listHA5 3XL: not on the flood risk listHA5 3XQ: not on the flood risk listHA5 3XT: not on the flood risk listHA5 3XU: not on the flood risk listHA5 3XX: not on the flood risk listHA5 3XY: not on the flood risk listHA5 3XZ: not on the flood risk listHA5 3YA: not on the flood risk listHA5 3YB: not on the flood risk listHA5 3YD: not on the flood risk listHA5 3YE: not on the flood risk listHA5 3YF: not on the flood risk listHA5 3YH: not on the flood risk listHA5 3YJ: not on the flood risk listHA5 3YQ: not on the flood risk listHA5 3YU: not on the flood risk listHA5 3YW: not on the flood risk listHA5 3YY: not on the flood risk listHA5 3YZ: not on the flood risk listHA5 3ZB: not on the flood risk listHA5 3ZD: not on the flood risk listHA5 3ZF: not on the flood risk listHA5 3BT: very low flood risk onlyHA5 3BZ: very low flood risk onlyHA5 3AU: low flood risk at worstHA5 3AY: low flood risk at worstHA5 3BY: low flood risk at worstHA5 3EE: low flood risk at worstHA5 3ES: low flood risk at worstHA5 3TT: low flood risk at worstHA5 3TU: low flood risk at worstHA5 3BX: medium flood risk at worstHA5 3ET: medium flood risk at worstHA5 3EZ: medium flood risk at worstHA5 3HA: medium flood risk at worstHA5 3HD: medium flood risk at worstHA5 3HF: medium flood risk at worstHA5 3HQ: medium flood risk at worstHA5 3JD: medium flood risk at worstHA5 3AZ: high flood riskHA5 3BW: high flood riskHA5 3DX: high flood riskHA5 3HR: high flood riskHA5 3JE: high flood riskHA5 3PX: high flood riskHA5 3RG: high flood riskHA5 3RH: high flood riskHA5 3RQ: high flood risk Pinner 7 postcodes at high or medium risk, outlined: this goes to HA5 3BW, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in the HA5 3 sector, by flood risk Of the 266 postcodes in the HA5 3 sector that ONS places, 9 have a home or business at high risk, 9 are at medium risk at worst, 7 are at low risk at worst, 2 are at very low risk only and 239 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 7 postcodes at high or medium risk. Places named: Pinner. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Pinner
  • A home or business at high risk: 9
  • At medium risk at worst: 9
  • At low risk at worst: 7
  • At very low risk only: 2
  • Not on the at-risk list: 239
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 266 postcodes in the HA5 3 sector that ONS places, 9 have a home or business at high risk, 9 are at medium risk at worst, 7 are at low risk at worst, 2 are at very low risk only and 239 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.

HA5 3JE18 at high riskHA5 3RH8 at high riskHA5 3PX4 at high riskHA5 3RQ4 at high riskHA5 3RG3 at high riskHA5 3BW2 at high riskHA5 3HR2 at high riskHA5 3DX2 at high riskHA5 3AZ1 at high risk

Where the postcodes at high or medium risk lie together

  • 7 postcodes at high or medium risk, outlined on the map. HA5 3BW, is the one with most homes and businesses at high risk.

What do homes sell for in HA5 3?

Homes in HA5 3 sold for a typical £715,000 in the 12 months to August 2026, across 73 sales, up 0.4% on the 12 months before, HM Land Registry's figures show.

£715,000 typical price, the 12 months to August 2026
£712,500 12 months to August 2025
▲ up 0.4% on the 12 months before
  • Detached £1,100,000 26 sales
  • Semi-detached £768,750 16 sales
  • Terraced £572,125 12 sales
  • Flat or maisonette £365,000 19 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 HA5 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 HA5 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.

HA5 3AAHA5 3ABHA5 3ADHA5 3AEHA5 3AFHA5 3AGHA5 3AHHA5 3AJHA5 3ALHA5 3ANHA5 3APHA5 3AQHA5 3ARHA5 3ASHA5 3ATHA5 3AUHA5 3AWHA5 3AXHA5 3AYHA5 3AZHA5 3BAHA5 3BBHA5 3BDHA5 3BEHA5 3BGHA5 3BHHA5 3BJHA5 3BLHA5 3BNHA5 3BPHA5 3BQHA5 3BSHA5 3BTHA5 3BUHA5 3BWHA5 3BXHA5 3BYHA5 3BZHA5 3DAHA5 3DBHA5 3DDHA5 3DEHA5 3DFHA5 3DGHA5 3DHHA5 3DJHA5 3DLHA5 3DNHA5 3DPHA5 3DQHA5 3DRHA5 3DTHA5 3DWHA5 3DXHA5 3DYHA5 3DZHA5 3EAHA5 3EDHA5 3EEHA5 3EFHA5 3EHHA5 3EJHA5 3ELHA5 3ENHA5 3EPHA5 3ESHA5 3ETHA5 3EUHA5 3EWHA5 3EXHA5 3EYHA5 3EZHA5 3FFHA5 3FGHA5 3FQHA5 3GYHA5 3HAHA5 3HDHA5 3HEHA5 3HFHA5 3HGHA5 3HHHA5 3HJHA5 3HNHA5 3HPHA5 3HQHA5 3HRHA5 3HXHA5 3HZHA5 3JAHA5 3JBHA5 3JDHA5 3JEHA5 3JFHA5 3JLHA5 3JPHA5 3JSHA5 3JTHA5 3JUHA5 3LAHA5 3LDHA5 3LEHA5 3LFHA5 3LGHA5 3LHHA5 3LJHA5 3LLHA5 3LNHA5 3LPHA5 3LQHA5 3LRHA5 3LTHA5 3LUHA5 3LWHA5 3LXHA5 3LYHA5 3LZHA5 3NFHA5 3NGHA5 3NHHA5 3NJHA5 3NLHA5 3NNHA5 3NPHA5 3NQHA5 3NRHA5 3NSHA5 3NTHA5 3NUHA5 3NWHA5 3NXHA5 3NYHA5 3NZHA5 3PAHA5 3PBHA5 3PDHA5 3PEHA5 3PFHA5 3PGHA5 3PHHA5 3PJHA5 3PLHA5 3PQHA5 3PRHA5 3PSHA5 3PTHA5 3PUHA5 3PXHA5 3PYHA5 3PZHA5 3QAHA5 3QBHA5 3QDHA5 3QEHA5 3QFHA5 3QGHA5 3QHHA5 3QJHA5 3QLHA5 3QNHA5 3QPHA5 3QQHA5 3QRHA5 3QSHA5 3QTHA5 3QWHA5 3RAHA5 3RBHA5 3RDHA5 3REHA5 3RFHA5 3RGHA5 3RHHA5 3RJHA5 3RLHA5 3RNHA5 3RPHA5 3RQHA5 3RTHA5 3RUHA5 3RWHA5 3RXHA5 3RYHA5 3RZHA5 3SAHA5 3SBHA5 3SDHA5 3SEHA5 3SGHA5 3SHHA5 3SJHA5 3SLHA5 3SNHA5 3SPHA5 3SQHA5 3SRHA5 3SWHA5 3SXHA5 3SYHA5 3SZHA5 3TAHA5 3TBHA5 3TDHA5 3TEHA5 3TGHA5 3THHA5 3TJHA5 3TNHA5 3TPHA5 3TQHA5 3TTHA5 3TUHA5 3TWHA5 3TXHA5 3TYHA5 3TZHA5 3UAHA5 3UBHA5 3UDHA5 3UEHA5 3UFHA5 3UGHA5 3UHHA5 3UJHA5 3UNHA5 3UPHA5 3UQHA5 3URHA5 3UTHA5 3UUHA5 3UXHA5 3UYHA5 3UZHA5 3WAHA5 3WWHA5 3WXHA5 3XAHA5 3XBHA5 3XDHA5 3XEHA5 3XFHA5 3XGHA5 3XHHA5 3XJHA5 3XLHA5 3XQHA5 3XTHA5 3XUHA5 3XXHA5 3XYHA5 3XZHA5 3YAHA5 3YBHA5 3YDHA5 3YEHA5 3YFHA5 3YHHA5 3YJHA5 3YQHA5 3YUHA5 3YWHA5 3YYHA5 3YZHA5 3ZBHA5 3ZDHA5 3ZF

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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