HA3 7 postcode sector in the HA3 district

HA3 7 is a sector of the HA3 district: every postcode that starts HA3 7. It has 221 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 HA3 7 sector, and which are new since 2020

Map of every postcode in the HA3 7 sector, by new since 2020 Of the 221 postcodes in the HA3 7 sector that ONS places, 6 are new since 2020 and 215 were in use before 2020. One group of new postcodes is outlined: 6 new postcodes since 2020. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HA3 7AA: before 2020HA3 7AB: before 2020HA3 7AD: before 2020HA3 7AE: before 2020HA3 7AF: before 2020HA3 7AH: before 2020HA3 7AL: before 2020HA3 7AN: before 2020HA3 7AP: before 2020HA3 7AR: before 2020HA3 7AS: before 2020HA3 7AT: before 2020HA3 7AU: before 2020HA3 7AW: before 2020HA3 7AX: before 2020HA3 7AY: before 2020HA3 7BA: before 2020HA3 7BB: before 2020HA3 7BD: before 2020HA3 7BG: before 2020HA3 7BN: before 2020HA3 7BP: before 2020HA3 7BS: before 2020HA3 7BT: before 2020HA3 7BU: before 2020HA3 7BW: before 2020HA3 7BX: before 2020HA3 7BY: before 2020HA3 7BZ: before 2020HA3 7DA: before 2020HA3 7DB: before 2020HA3 7DD: before 2020HA3 7DE: before 2020HA3 7DF: before 2020HA3 7DG: before 2020HA3 7DH: before 2020HA3 7DJ: before 2020HA3 7DL: before 2020HA3 7DN: before 2020HA3 7DP: before 2020HA3 7DQ: before 2020HA3 7DR: before 2020HA3 7DU: before 2020HA3 7DX: before 2020HA3 7DY: before 2020HA3 7EA: before 2020HA3 7EB: before 2020HA3 7ED: before 2020HA3 7EE: before 2020HA3 7EF: before 2020HA3 7EG: before 2020HA3 7EH: before 2020HA3 7EJ: before 2020HA3 7EL: before 2020HA3 7EN: before 2020HA3 7EP: before 2020HA3 7EQ: before 2020HA3 7ER: before 2020HA3 7ET: before 2020HA3 7EU: before 2020HA3 7EW: before 2020HA3 7EY: before 2020HA3 7EZ: before 2020HA3 7FA: before 2020HA3 7FB: before 2020HA3 7FE: before 2020HA3 7FF: before 2020HA3 7FG: before 2020HA3 7FH: before 2020HA3 7FJ: before 2020HA3 7HA: before 2020HA3 7HB: before 2020HA3 7HD: before 2020HA3 7HE: before 2020HA3 7HF: before 2020HA3 7HG: before 2020HA3 7HH: before 2020HA3 7HJ: before 2020HA3 7HL: before 2020HA3 7HN: before 2020HA3 7HP: before 2020HA3 7HQ: before 2020HA3 7HR: before 2020HA3 7HS: before 2020HA3 7HT: before 2020HA3 7HU: before 2020HA3 7HW: before 2020HA3 7HX: before 2020HA3 7HY: before 2020HA3 7HZ: before 2020HA3 7JA: before 2020HA3 7JB: before 2020HA3 7JE: before 2020HA3 7JF: before 2020HA3 7JG: before 2020HA3 7JJ: before 2020HA3 7JN: before 2020HA3 7JP: before 2020HA3 7JQ: before 2020HA3 7JS: before 2020HA3 7JT: before 2020HA3 7JU: before 2020HA3 7JW: before 2020HA3 7JX: before 2020HA3 7JY: before 2020HA3 7JZ: before 2020HA3 7LA: before 2020HA3 7LB: before 2020HA3 7LD: before 2020HA3 7LE: before 2020HA3 7LF: before 2020HA3 7LG: before 2020HA3 7LH: before 2020HA3 7LJ: before 2020HA3 7LL: before 2020HA3 7LP: before 2020HA3 7LQ: before 2020HA3 7LR: before 2020HA3 7LS: before 2020HA3 7LX: before 2020HA3 7LY: before 2020HA3 7LZ: before 2020HA3 7NA: before 2020HA3 7NB: before 2020HA3 7ND: before 2020HA3 7NE: before 2020HA3 7NF: before 2020HA3 7NG: before 2020HA3 7NH: before 2020HA3 7NJ: before 2020HA3 7NL: before 2020HA3 7NN: before 2020HA3 7NP: before 2020HA3 7NQ: before 2020HA3 7NR: before 2020HA3 7NS: before 2020HA3 7NT: before 2020HA3 7NU: before 2020HA3 7NW: before 2020HA3 7NX: before 2020HA3 7NY: before 2020HA3 7NZ: before 2020HA3 7PA: before 2020HA3 7PB: before 2020HA3 7PJ: before 2020HA3 7PL: before 2020HA3 7PN: before 2020HA3 7PP: before 2020HA3 7PR: before 2020HA3 7PS: before 2020HA3 7PT: before 2020HA3 7PU: before 2020HA3 7PW: before 2020HA3 7PX: before 2020HA3 7PY: before 2020HA3 7PZ: before 2020HA3 7QA: before 2020HA3 7QB: before 2020HA3 7QD: before 2020HA3 7QE: before 2020HA3 7QF: before 2020HA3 7QG: before 2020HA3 7QQ: before 2020HA3 7QR: before 2020HA3 7QS: before 2020HA3 7QT: before 2020HA3 7QU: before 2020HA3 7QX: before 2020HA3 7QZ: before 2020HA3 7RA: before 2020HA3 7RB: before 2020HA3 7RE: before 2020HA3 7RF: before 2020HA3 7RG: before 2020HA3 7RH: before 2020HA3 7RL: before 2020HA3 7RN: before 2020HA3 7RR: before 2020HA3 7RT: before 2020HA3 7RU: before 2020HA3 7RW: before 2020HA3 7RX: before 2020HA3 7SA: before 2020HA3 7SB: before 2020HA3 7SE: before 2020HA3 7SF: before 2020HA3 7SG: before 2020HA3 7SH: before 2020HA3 7SJ: before 2020HA3 7SL: before 2020HA3 7SN: before 2020HA3 7SP: before 2020HA3 7SQ: before 2020HA3 7SR: before 2020HA3 7SS: before 2020HA3 7ST: before 2020HA3 7SU: before 2020HA3 7SW: before 2020HA3 7SX: before 2020HA3 7SY: before 2020HA3 7SZ: before 2020HA3 7TA: before 2020HA3 7TB: before 2020HA3 7TD: before 2020HA3 7TE: before 2020HA3 7TF: before 2020HA3 7TG: before 2020HA3 7TJ: before 2020HA3 7TQ: before 2020HA3 7TU: before 2020HA3 7UA: before 2020HA3 7UB: before 2020HA3 7FL: new since 2020HA3 7JD: new since 2020HA3 7FQ: new since 2020 Harrow 6 new postcodes since 2020, outlined: this goes to HA3 7JD, the newest of them6 new postcodes since 2020 Map of every postcode in the HA3 7 sector, by new since 2020 Of the 221 postcodes in the HA3 7 sector that ONS places, 6 are new since 2020 and 215 were in use before 2020. One group of new postcodes is outlined: 6 new postcodes since 2020. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Harrow
  • New since 2020: 6
  • In use before 2020: 215
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 221 postcodes in the HA3 7 sector that ONS places, 6 are new since 2020 and 215 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; 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

Where the new postcodes lie together

What do homes sell for in HA3 7?

Homes in HA3 7 sold for a typical £525,000 in the 12 months to August 2026, across 51 sales, up 3.1% on the 12 months before, HM Land Registry's figures show.

£525,000 typical price, the 12 months to August 2026
£509,000 12 months to August 2025
▲ up 3.1% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached £550,000 14 sales
  • Terraced £530,000 21 sales
  • Flat or maisonette £305,000 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 HA3 7. 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 HA3 7

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.

HA3 7AAHA3 7ABHA3 7ADHA3 7AEHA3 7AFHA3 7AHHA3 7ALHA3 7ANHA3 7APHA3 7ARHA3 7ASHA3 7ATHA3 7AUHA3 7AWHA3 7AXHA3 7AYHA3 7BAHA3 7BBHA3 7BDHA3 7BGHA3 7BNHA3 7BPHA3 7BSHA3 7BTHA3 7BUHA3 7BWHA3 7BXHA3 7BYHA3 7BZHA3 7DAHA3 7DBHA3 7DDHA3 7DEHA3 7DFHA3 7DGHA3 7DHHA3 7DJHA3 7DLHA3 7DNHA3 7DPHA3 7DQHA3 7DRHA3 7DUHA3 7DXHA3 7DYHA3 7EAHA3 7EBHA3 7EDHA3 7EEHA3 7EFHA3 7EGHA3 7EHHA3 7EJHA3 7ELHA3 7ENHA3 7EPHA3 7EQHA3 7ERHA3 7ETHA3 7EUHA3 7EWHA3 7EYHA3 7EZHA3 7FAHA3 7FBHA3 7FDHA3 7FEHA3 7FFHA3 7FGHA3 7FHHA3 7FJHA3 7FLHA3 7FNHA3 7FPHA3 7FQHA3 7HAHA3 7HBHA3 7HDHA3 7HEHA3 7HFHA3 7HGHA3 7HHHA3 7HJHA3 7HLHA3 7HNHA3 7HPHA3 7HQHA3 7HRHA3 7HSHA3 7HTHA3 7HUHA3 7HWHA3 7HXHA3 7HYHA3 7HZHA3 7JAHA3 7JBHA3 7JDHA3 7JEHA3 7JFHA3 7JGHA3 7JJHA3 7JNHA3 7JPHA3 7JQHA3 7JSHA3 7JTHA3 7JUHA3 7JWHA3 7JXHA3 7JYHA3 7JZHA3 7LAHA3 7LBHA3 7LDHA3 7LEHA3 7LFHA3 7LGHA3 7LHHA3 7LJHA3 7LLHA3 7LPHA3 7LQHA3 7LRHA3 7LSHA3 7LTHA3 7LXHA3 7LYHA3 7LZHA3 7NAHA3 7NBHA3 7NDHA3 7NEHA3 7NFHA3 7NGHA3 7NHHA3 7NJHA3 7NLHA3 7NNHA3 7NPHA3 7NQHA3 7NRHA3 7NSHA3 7NTHA3 7NUHA3 7NWHA3 7NXHA3 7NYHA3 7NZHA3 7PAHA3 7PBHA3 7PJHA3 7PLHA3 7PNHA3 7PPHA3 7PRHA3 7PSHA3 7PTHA3 7PUHA3 7PWHA3 7PXHA3 7PYHA3 7PZHA3 7QAHA3 7QBHA3 7QDHA3 7QEHA3 7QFHA3 7QGHA3 7QQHA3 7QRHA3 7QSHA3 7QTHA3 7QUHA3 7QXHA3 7QZHA3 7RAHA3 7RBHA3 7REHA3 7RFHA3 7RGHA3 7RHHA3 7RLHA3 7RNHA3 7RRHA3 7RTHA3 7RUHA3 7RWHA3 7RXHA3 7SAHA3 7SBHA3 7SEHA3 7SFHA3 7SGHA3 7SHHA3 7SJHA3 7SLHA3 7SNHA3 7SPHA3 7SQHA3 7SRHA3 7SSHA3 7STHA3 7SUHA3 7SWHA3 7SXHA3 7SYHA3 7SZHA3 7TAHA3 7TBHA3 7TDHA3 7TEHA3 7TFHA3 7TGHA3 7TJHA3 7TQHA3 7TSHA3 7TUHA3 7UAHA3 7UBHA3 7UD

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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