HA5 4 postcode sector in the HA5 district

HA5 4 is a sector of the HA5 district: every postcode that starts HA5 4. It has 230 postcodes in use, 8 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 4 sector, by flood risk

Map of every postcode in the HA5 4 sector, by flood risk Of the 230 postcodes in the HA5 4 sector that ONS places, 13 have a home or business at high risk, 34 are at low risk at worst, 3 are at very low risk only and 180 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: Hatch End, Pinner. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A404 HA5 4AD: not on the flood risk listHA5 4AE: not on the flood risk listHA5 4AF: not on the flood risk listHA5 4AH: not on the flood risk listHA5 4AJ: not on the flood risk listHA5 4AL: not on the flood risk listHA5 4AN: not on the flood risk listHA5 4AP: not on the flood risk listHA5 4AR: not on the flood risk listHA5 4AS: not on the flood risk listHA5 4AW: not on the flood risk listHA5 4AX: not on the flood risk listHA5 4AY: not on the flood risk listHA5 4AZ: not on the flood risk listHA5 4BA: not on the flood risk listHA5 4BJ: not on the flood risk listHA5 4BN: not on the flood risk listHA5 4BP: not on the flood risk listHA5 4BS: not on the flood risk listHA5 4BU: not on the flood risk listHA5 4BW: not on the flood risk listHA5 4BX: not on the flood risk listHA5 4BY: not on the flood risk listHA5 4BZ: not on the flood risk listHA5 4DA: not on the flood risk listHA5 4DB: not on the flood risk listHA5 4DD: not on the flood risk listHA5 4DE: not on the flood risk listHA5 4DG: not on the flood risk listHA5 4DH: not on the flood risk listHA5 4DP: not on the flood risk listHA5 4DQ: not on the flood risk listHA5 4DR: not on the flood risk listHA5 4DU: not on the flood risk listHA5 4DX: not on the flood risk listHA5 4DY: not on the flood risk listHA5 4DZ: not on the flood risk listHA5 4EB: not on the flood risk listHA5 4EE: not on the flood risk listHA5 4EH: not on the flood risk listHA5 4EJ: not on the flood risk listHA5 4EP: not on the flood risk listHA5 4EQ: not on the flood risk listHA5 4ER: not on the flood risk listHA5 4ES: not on the flood risk listHA5 4ET: not on the flood risk listHA5 4EU: not on the flood risk listHA5 4EW: not on the flood risk listHA5 4EX: not on the flood risk listHA5 4EY: not on the flood risk listHA5 4EZ: not on the flood risk listHA5 4GZ: not on the flood risk listHA5 4HB: not on the flood risk listHA5 4HD: not on the flood risk listHA5 4HE: not on the flood risk listHA5 4HG: not on the flood risk listHA5 4HH: not on the flood risk listHA5 4HJ: not on the flood risk listHA5 4HL: not on the flood risk listHA5 4HP: not on the flood risk listHA5 4HQ: not on the flood risk listHA5 4HS: not on the flood risk listHA5 4HU: not on the flood risk listHA5 4JB: not on the flood risk listHA5 4JE: not on the flood risk listHA5 4JF: not on the flood risk listHA5 4JG: not on the flood risk listHA5 4JH: not on the flood risk listHA5 4JJ: not on the flood risk listHA5 4JL: not on the flood risk listHA5 4JN: not on the flood risk listHA5 4JQ: not on the flood risk listHA5 4JU: not on the flood risk listHA5 4JX: not on the flood risk listHA5 4JZ: not on the flood risk listHA5 4LB: not on the flood risk listHA5 4LH: not on the flood risk listHA5 4LJ: not on the flood risk listHA5 4LL: not on the flood risk listHA5 4LN: not on the flood risk listHA5 4LP: not on the flood risk listHA5 4LR: not on the flood risk listHA5 4LT: not on the flood risk listHA5 4LW: not on the flood risk listHA5 4LX: not on the flood risk listHA5 4LY: not on the flood risk listHA5 4LZ: not on the flood risk listHA5 4NA: not on the flood risk listHA5 4NF: not on the flood risk listHA5 4NG: not on the flood risk listHA5 4NH: not on the flood risk listHA5 4NJ: not on the flood risk listHA5 4NP: not on the flood risk listHA5 4NQ: not on the flood risk listHA5 4NR: not on the flood risk listHA5 4NS: not on the flood risk listHA5 4NT: not on the flood risk listHA5 4NU: not on the flood risk listHA5 4NY: not on the flood risk listHA5 4PF: not on the flood risk listHA5 4PG: not on the flood risk listHA5 4PH: not on the flood risk listHA5 4PJ: not on the flood risk listHA5 4PP: not on the flood risk listHA5 4PQ: not on the flood risk listHA5 4PR: not on the flood risk listHA5 4PS: not on the flood risk listHA5 4PT: not on the flood risk listHA5 4PU: not on the flood risk listHA5 4PW: not on the flood risk listHA5 4PX: not on the flood risk listHA5 4PY: not on the flood risk listHA5 4PZ: not on the flood risk listHA5 4QA: not on the flood risk listHA5 4QB: not on the flood risk listHA5 4QD: not on the flood risk listHA5 4QE: not on the flood risk listHA5 4QF: not on the flood risk listHA5 4QG: not on the flood risk listHA5 4QH: not on the flood risk listHA5 4QJ: not on the flood risk listHA5 4QL: not on the flood risk listHA5 4QN: not on the flood risk listHA5 4QP: not on the flood risk listHA5 4QQ: not on the flood risk listHA5 4QS: not on the flood risk listHA5 4QT: not on the flood risk listHA5 4QW: not on the flood risk listHA5 4RB: not on the flood risk listHA5 4RD: not on the flood risk listHA5 4RE: not on the flood risk listHA5 4RF: not on the flood risk listHA5 4RG: not on the flood risk listHA5 4RH: not on the flood risk listHA5 4RJ: not on the flood risk listHA5 4RL: not on the flood risk listHA5 4RP: not on the flood risk listHA5 4RQ: not on the flood risk listHA5 4RS: not on the flood risk listHA5 4RU: not on the flood risk listHA5 4RW: not on the flood risk listHA5 4RX: not on the flood risk listHA5 4RY: not on the flood risk listHA5 4RZ: not on the flood risk listHA5 4SA: not on the flood risk listHA5 4SD: not on the flood risk listHA5 4SE: not on the flood risk listHA5 4SF: not on the flood risk listHA5 4SG: not on the flood risk listHA5 4SH: not on the flood risk listHA5 4SJ: not on the flood risk listHA5 4SL: not on the flood risk listHA5 4SP: not on the flood risk listHA5 4SQ: not on the flood risk listHA5 4ST: not on the flood risk listHA5 4SU: not on the flood risk listHA5 4SW: not on the flood risk listHA5 4SX: not on the flood risk listHA5 4SY: not on the flood risk listHA5 4TA: not on the flood risk listHA5 4TG: not on the flood risk listHA5 4TJ: not on the flood risk listHA5 4TP: not on the flood risk listHA5 4TQ: not on the flood risk listHA5 4TR: not on the flood risk listHA5 4TS: not on the flood risk listHA5 4TT: not on the flood risk listHA5 4UA: not on the flood risk listHA5 4UR: not on the flood risk listHA5 4UT: not on the flood risk listHA5 4UU: not on the flood risk listHA5 4UX: not on the flood risk listHA5 4XN: not on the flood risk listHA5 4YH: not on the flood risk listHA5 4LU: very low flood risk onlyHA5 4NB: very low flood risk onlyHA5 4PE: very low flood risk onlyHA5 4AA: low flood risk at worstHA5 4AB: low flood risk at worstHA5 4AG: low flood risk at worstHA5 4AQ: low flood risk at worstHA5 4BH: low flood risk at worstHA5 4BL: low flood risk at worstHA5 4DF: low flood risk at worstHA5 4DS: low flood risk at worstHA5 4DT: low flood risk at worstHA5 4EA: low flood risk at worstHA5 4ED: low flood risk at worstHA5 4EN: low flood risk at worstHA5 4FG: low flood risk at worstHA5 4HA: low flood risk at worstHA5 4HF: low flood risk at worstHA5 4HR: low flood risk at worstHA5 4JR: low flood risk at worstHA5 4JS: low flood risk at worstHA5 4LD: low flood risk at worstHA5 4ND: low flood risk at worstHA5 4NE: low flood risk at worstHA5 4NL: low flood risk at worstHA5 4NN: low flood risk at worstHA5 4NZ: low flood risk at worstHA5 4PA: low flood risk at worstHA5 4PB: low flood risk at worstHA5 4PD: low flood risk at worstHA5 4QX: low flood risk at worstHA5 4RA: low flood risk at worstHA5 4RT: low flood risk at worstHA5 4SB: low flood risk at worstHA5 4SN: low flood risk at worstHA5 4SR: low flood risk at worstHA5 4UH: low flood risk at worstHA5 4BT: high flood riskHA5 4EL: high flood riskHA5 4RN: high flood riskHA5 4RR: high flood riskHA5 4SS: high flood riskHA5 4TL: high flood riskHA5 4TN: high flood riskHA5 4TW: high flood riskHA5 4TX: high flood riskHA5 4TY: high flood riskHA5 4TZ: high flood riskHA5 4UB: high flood riskHA5 4UD: high flood risk Hatch EndPinner 7 postcodes at high or medium risk, outlined: this goes to HA5 4TZ, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in the HA5 4 sector, by flood risk Of the 230 postcodes in the HA5 4 sector that ONS places, 13 have a home or business at high risk, 34 are at low risk at worst, 3 are at very low risk only and 180 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: Hatch End, Pinner. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Hatch EndPinner
  • A home or business at high risk: 13
  • At medium risk at worst: 0
  • At low risk at worst: 34
  • At very low risk only: 3
  • Not on the at-risk list: 180
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 230 postcodes in the HA5 4 sector that ONS places, 13 have a home or business at high risk, 34 are at low risk at worst, 3 are at very low risk only and 180 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

13 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.

HA5 4TZ11 at high riskHA5 4TN9 at high riskHA5 4TL7 at high riskHA5 4TY3 at high riskHA5 4TX2 at high riskHA5 4TW1 at high riskHA5 4BT1 at high riskHA5 4EL1 at high riskHA5 4RN1 at high riskHA5 4RR1 at high riskHA5 4SS1 at high riskHA5 4UB1 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 4TZ, is the one with most homes and businesses at high risk.

What do homes sell for in HA5 4?

Homes in HA5 4 sold for a typical £726,250 in the 12 months to August 2026, across 52 sales, down 3% on the 12 months before, HM Land Registry's figures show.

£726,250 typical price, the 12 months to August 2026
£748,750 12 months to August 2025
▼ down 3% on the 12 months before
  • Detached £970,000 16 sales
  • Semi-detached £760,000 16 sales
  • Terraced 2 sales, too few to price
  • Flat or maisonette £375,000 18 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 4. 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 4

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 4AAHA5 4ABHA5 4ADHA5 4AEHA5 4AFHA5 4AGHA5 4AHHA5 4AJHA5 4ALHA5 4ANHA5 4APHA5 4AQHA5 4ARHA5 4ASHA5 4AWHA5 4AXHA5 4AYHA5 4AZHA5 4BAHA5 4BHHA5 4BJHA5 4BLHA5 4BNHA5 4BPHA5 4BSHA5 4BTHA5 4BUHA5 4BWHA5 4BXHA5 4BYHA5 4BZHA5 4DAHA5 4DBHA5 4DDHA5 4DEHA5 4DFHA5 4DGHA5 4DHHA5 4DPHA5 4DQHA5 4DRHA5 4DSHA5 4DTHA5 4DUHA5 4DXHA5 4DYHA5 4DZHA5 4EAHA5 4EBHA5 4EDHA5 4EEHA5 4EHHA5 4EJHA5 4ELHA5 4ENHA5 4EPHA5 4EQHA5 4ERHA5 4ESHA5 4ETHA5 4EUHA5 4EWHA5 4EXHA5 4EYHA5 4EZHA5 4FGHA5 4FHHA5 4GZHA5 4HAHA5 4HBHA5 4HDHA5 4HEHA5 4HFHA5 4HGHA5 4HHHA5 4HJHA5 4HLHA5 4HPHA5 4HQHA5 4HRHA5 4HSHA5 4HUHA5 4JAHA5 4JBHA5 4JEHA5 4JFHA5 4JGHA5 4JHHA5 4JJHA5 4JLHA5 4JNHA5 4JQHA5 4JRHA5 4JSHA5 4JUHA5 4JXHA5 4JZHA5 4LBHA5 4LDHA5 4LHHA5 4LJHA5 4LLHA5 4LNHA5 4LPHA5 4LRHA5 4LSHA5 4LTHA5 4LUHA5 4LWHA5 4LXHA5 4LYHA5 4LZHA5 4NAHA5 4NBHA5 4NDHA5 4NEHA5 4NFHA5 4NGHA5 4NHHA5 4NJHA5 4NLHA5 4NNHA5 4NPHA5 4NQHA5 4NRHA5 4NSHA5 4NTHA5 4NUHA5 4NXHA5 4NYHA5 4NZHA5 4PAHA5 4PBHA5 4PDHA5 4PEHA5 4PFHA5 4PGHA5 4PHHA5 4PJHA5 4PPHA5 4PQHA5 4PRHA5 4PSHA5 4PTHA5 4PUHA5 4PWHA5 4PXHA5 4PYHA5 4PZHA5 4QAHA5 4QBHA5 4QDHA5 4QEHA5 4QFHA5 4QGHA5 4QHHA5 4QJHA5 4QLHA5 4QNHA5 4QPHA5 4QQHA5 4QSHA5 4QTHA5 4QWHA5 4QXHA5 4RAHA5 4RBHA5 4RDHA5 4REHA5 4RFHA5 4RGHA5 4RHHA5 4RJHA5 4RLHA5 4RNHA5 4RPHA5 4RQHA5 4RRHA5 4RSHA5 4RTHA5 4RUHA5 4RWHA5 4RXHA5 4RYHA5 4RZHA5 4SAHA5 4SBHA5 4SDHA5 4SEHA5 4SFHA5 4SGHA5 4SHHA5 4SJHA5 4SLHA5 4SNHA5 4SPHA5 4SQHA5 4SRHA5 4SSHA5 4STHA5 4SUHA5 4SWHA5 4SXHA5 4SYHA5 4TAHA5 4TGHA5 4TJHA5 4TLHA5 4TNHA5 4TPHA5 4TQHA5 4TRHA5 4TSHA5 4TTHA5 4TWHA5 4TXHA5 4TYHA5 4TZHA5 4UAHA5 4UBHA5 4UDHA5 4UHHA5 4URHA5 4UTHA5 4UUHA5 4UXHA5 4XNHA5 4YHHA5 4ZJHA5 4ZN

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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