HA1 3 postcode sector in the HA1 district

HA1 3 is a sector of the HA1 district: every postcode that starts HA1 3. It has 263 postcodes in use, 21 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 HA1 3 sector, by gigabit broadband

Map of every postcode in the HA1 3 sector, by gigabit broadband Of the 263 postcodes in the HA1 3 sector that ONS places, 51 have no home or business that can get gigabit, 50 have some that can, 146 can all get it and 16 have no Ofcom figure. 3 groups of postcodes without gigabit are outlined: 9 postcodes without gigabit; 8 postcodes without gigabit; 6 postcodes without gigabit. Places named: Harrow on the Hill, Northwick Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A404 HA1 3BN: no Ofcom figureHA1 3EY: no Ofcom figureHA1 3GT: no Ofcom figureHA1 3GW: no Ofcom figureHA1 3HP: no Ofcom figureHA1 3JA: no Ofcom figureHA1 3JT: no Ofcom figureHA1 3NJ: no Ofcom figureHA1 3RE: no Ofcom figureHA1 3WU: no Ofcom figureHA1 3YJ: no Ofcom figureHA1 3AA: gigabit for allHA1 3AB: gigabit for allHA1 3AH: gigabit for allHA1 3AJ: gigabit for allHA1 3AL: gigabit for allHA1 3AN: gigabit for allHA1 3AP: gigabit for allHA1 3AQ: gigabit for allHA1 3AT: gigabit for allHA1 3AW: gigabit for allHA1 3AX: gigabit for allHA1 3AZ: gigabit for allHA1 3BB: gigabit for allHA1 3BG: gigabit for allHA1 3BH: gigabit for allHA1 3BJ: gigabit for allHA1 3BL: gigabit for allHA1 3BQ: gigabit for allHA1 3BS: gigabit for allHA1 3BT: gigabit for allHA1 3BX: gigabit for allHA1 3DA: gigabit for allHA1 3DB: gigabit for allHA1 3DL: gigabit for allHA1 3DP: gigabit for allHA1 3DQ: gigabit for allHA1 3DS: gigabit for allHA1 3DW: gigabit for allHA1 3DX: gigabit for allHA1 3DZ: gigabit for allHA1 3ED: gigabit for allHA1 3EG: gigabit for allHA1 3EJ: gigabit for allHA1 3EN: gigabit for allHA1 3EP: gigabit for allHA1 3ER: gigabit for allHA1 3ET: gigabit for allHA1 3EU: gigabit for allHA1 3EW: gigabit for allHA1 3EX: gigabit for allHA1 3EZ: gigabit for allHA1 3GE: gigabit for allHA1 3GF: gigabit for allHA1 3GH: gigabit for allHA1 3GJ: gigabit for allHA1 3GL: gigabit for allHA1 3GN: gigabit for allHA1 3GP: gigabit for allHA1 3GQ: gigabit for allHA1 3GX: gigabit for allHA1 3GY: gigabit for allHA1 3GZ: gigabit for allHA1 3HD: gigabit for allHA1 3HF: gigabit for allHA1 3HG: gigabit for allHA1 3HJ: gigabit for allHA1 3HQ: gigabit for allHA1 3HR: gigabit for allHA1 3HS: gigabit for allHA1 3HW: gigabit for allHA1 3HX: gigabit for allHA1 3JF: gigabit for allHA1 3JH: gigabit for allHA1 3JL: gigabit for allHA1 3JN: gigabit for allHA1 3JQ: gigabit for allHA1 3JS: gigabit for allHA1 3LA: gigabit for allHA1 3LF: gigabit for allHA1 3LH: gigabit for allHA1 3LZ: gigabit for allHA1 3NB: gigabit for allHA1 3ND: gigabit for allHA1 3NH: gigabit for allHA1 3NQ: gigabit for allHA1 3NW: gigabit for allHA1 3PD: gigabit for allHA1 3PJ: gigabit for allHA1 3PN: gigabit for allHA1 3PP: gigabit for allHA1 3PS: gigabit for allHA1 3PT: gigabit for allHA1 3PU: gigabit for allHA1 3PW: gigabit for allHA1 3PX: gigabit for allHA1 3PY: gigabit for allHA1 3QA: gigabit for allHA1 3QB: gigabit for allHA1 3QE: gigabit for allHA1 3QF: gigabit for allHA1 3QH: gigabit for allHA1 3QJ: gigabit for allHA1 3QQ: gigabit for allHA1 3QX: gigabit for allHA1 3QY: gigabit for allHA1 3RA: gigabit for allHA1 3RD: gigabit for allHA1 3RF: gigabit for allHA1 3RG: gigabit for allHA1 3RH: gigabit for allHA1 3RJ: gigabit for allHA1 3RL: gigabit for allHA1 3RN: gigabit for allHA1 3RQ: gigabit for allHA1 3RS: gigabit for allHA1 3RT: gigabit for allHA1 3RU: gigabit for allHA1 3SD: gigabit for allHA1 3SE: gigabit for allHA1 3SF: gigabit for allHA1 3SG: gigabit for allHA1 3SJ: gigabit for allHA1 3SQ: gigabit for allHA1 3SS: gigabit for allHA1 3ST: gigabit for allHA1 3SU: gigabit for allHA1 3SW: gigabit for allHA1 3SX: gigabit for allHA1 3SY: gigabit for allHA1 3SZ: gigabit for allHA1 3TA: gigabit for allHA1 3TB: gigabit for allHA1 3TD: gigabit for allHA1 3TE: gigabit for allHA1 3TF: gigabit for allHA1 3TL: gigabit for allHA1 3TN: gigabit for allHA1 3TS: gigabit for allHA1 3TT: gigabit for allHA1 3TX: gigabit for allHA1 3TY: gigabit for allHA1 3UB: gigabit for allHA1 3UD: gigabit for allHA1 3UE: gigabit for allHA1 3UF: gigabit for allHA1 3UG: gigabit for allHA1 3UH: gigabit for allHA1 3UJ: gigabit for allHA1 3UQ: gigabit for allHA1 3UX: gigabit for allHA1 3XD: gigabit for allHA1 3XH: gigabit for allHA1 3YL: gigabit for allHA1 3YP: gigabit for allHA1 3YR: gigabit for allHA1 3AG: some gigabitHA1 3AY: some gigabitHA1 3BA: some gigabitHA1 3BD: some gigabitHA1 3BE: some gigabitHA1 3BU: some gigabitHA1 3DD: some gigabitHA1 3DF: some gigabitHA1 3DH: some gigabitHA1 3DJ: some gigabitHA1 3DN: some gigabitHA1 3DY: some gigabitHA1 3EA: some gigabitHA1 3EF: some gigabitHA1 3EH: some gigabitHA1 3EL: some gigabitHA1 3ES: some gigabitHA1 3HE: some gigabitHA1 3HL: some gigabitHA1 3HT: some gigabitHA1 3JJ: some gigabitHA1 3JP: some gigabitHA1 3JW: some gigabitHA1 3JY: some gigabitHA1 3JZ: some gigabitHA1 3LE: some gigabitHA1 3LL: some gigabitHA1 3LP: some gigabitHA1 3LW: some gigabitHA1 3LY: some gigabitHA1 3NA: some gigabitHA1 3NX: some gigabitHA1 3NY: some gigabitHA1 3NZ: some gigabitHA1 3PH: some gigabitHA1 3PR: some gigabitHA1 3QD: some gigabitHA1 3QL: some gigabitHA1 3QN: some gigabitHA1 3QP: some gigabitHA1 3QS: some gigabitHA1 3RW: some gigabitHA1 3SB: some gigabitHA1 3SN: some gigabitHA1 3TG: some gigabitHA1 3TH: some gigabitHA1 3TP: some gigabitHA1 3TU: some gigabitHA1 3UA: some gigabitHA1 3AF: no gigabitHA1 3AR: no gigabitHA1 3BF: no gigabitHA1 3BY: no gigabitHA1 3BZ: no gigabitHA1 3DE: no gigabitHA1 3DG: no gigabitHA1 3DR: no gigabitHA1 3DU: no gigabitHA1 3GS: no gigabitHA1 3HN: no gigabitHA1 3JB: no gigabitHA1 3JD: no gigabitHA1 3JE: no gigabitHA1 3JG: no gigabitHA1 3JR: no gigabitHA1 3JU: no gigabitHA1 3JX: no gigabitHA1 3LB: no gigabitHA1 3LD: no gigabitHA1 3LJ: no gigabitHA1 3LN: no gigabitHA1 3LS: no gigabitHA1 3LT: no gigabitHA1 3LU: no gigabitHA1 3NE: no gigabitHA1 3NF: no gigabitHA1 3NG: no gigabitHA1 3NT: no gigabitHA1 3NU: no gigabitHA1 3PA: no gigabitHA1 3PB: no gigabitHA1 3PE: no gigabitHA1 3PF: no gigabitHA1 3PG: no gigabitHA1 3PL: no gigabitHA1 3PQ: no gigabitHA1 3PZ: no gigabitHA1 3QG: no gigabitHA1 3QT: no gigabitHA1 3QU: no gigabitHA1 3RR: no gigabitHA1 3RX: no gigabitHA1 3TZ: no gigabitHA1 3WP: no gigabitHA1 3XJ: no gigabitHA1 3YG: no gigabitHA1 3YH: no gigabitHA1 3YQ: no gigabit Harrow on the HillNorthwick Park 9 postcodes without gigabit, outlined: this goes to HA1 3DR, the one nearest the middle of them9 postcodes without gigabit8 postcodes without gigabit, outlined: this goes to HA1 3JD, the one nearest the middle of them8 postcodes without gigabit6 postcodes without gigabit, outlined: this goes to HA1 3LB, the one nearest the middle of them6 postcodes without gigabit Map of every postcode in the HA1 3 sector, by gigabit broadband Of the 263 postcodes in the HA1 3 sector that ONS places, 51 have no home or business that can get gigabit, 50 have some that can, 146 can all get it and 16 have no Ofcom figure. 3 groups of postcodes without gigabit are outlined: 9 postcodes without gigabit; 8 postcodes without gigabit; 6 postcodes without gigabit. Places named: Harrow on the Hill, Northwick Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Harrow on the HillNorthwick Park 6 postcodes without gigabit, outlined: this goes to HA1 3LB, the one nearest the middle of them6 postcodes without gigabit
  • No home or business can get gigabit: 51
  • Some can get gigabit: 50
  • Every home and business can get gigabit: 146
  • Ofcom gives no figure: 16
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 263 postcodes in the HA1 3 sector that ONS places, 51 have no home or business that can get gigabit, 50 have some that can, 146 can all get it and 16 have no Ofcom figure.

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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

51 postcodes here have no gigabit. These are the 12 first in postcode order.

HA1 3AFHA1 3ARHA1 3ASHA1 3BFHA1 3BYHA1 3BZHA1 3DEHA1 3DGHA1 3DRHA1 3DUHA1 3GSHA1 3HN

Where the postcodes without gigabit lie together

  • 9 postcodes without gigabit, outlined on the map. HA1 3DR, is the one nearest the middle of them.
  • 8 postcodes without gigabit, outlined on the map. HA1 3JD, is the one nearest the middle of them.
  • 6 postcodes without gigabit, outlined on the map. HA1 3LB, is the one nearest the middle of them.

What do homes sell for in HA1 3?

Homes in HA1 3 sold for a typical £437,000 in the 12 months to September 2026, across 37 sales, HM Land Registry's figures show. The 12 months before gave £490,000 from 73 sales: not a change larger than chance would explain, given which homes happened to sell.

£437,000 typical price, the 12 months to September 2026
£490,000 12 months to September 2025
  • Detached £1,132,500 8 sales
  • Semi-detached 4 sales, too few to price
  • Terraced 1 sale, too few to price
  • Flat or maisonette £400,000 24 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 HA1 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 October 2026.

Postcodes in HA1 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.

HA1 3AAHA1 3ABHA1 3AFHA1 3AGHA1 3AHHA1 3AJHA1 3ALHA1 3ANHA1 3APHA1 3AQHA1 3ARHA1 3ASHA1 3ATHA1 3AWHA1 3AXHA1 3AYHA1 3AZHA1 3BAHA1 3BBHA1 3BDHA1 3BEHA1 3BFHA1 3BGHA1 3BHHA1 3BJHA1 3BLHA1 3BNHA1 3BQHA1 3BSHA1 3BTHA1 3BUHA1 3BXHA1 3BYHA1 3BZHA1 3DAHA1 3DBHA1 3DDHA1 3DEHA1 3DFHA1 3DGHA1 3DHHA1 3DJHA1 3DLHA1 3DNHA1 3DPHA1 3DQHA1 3DRHA1 3DSHA1 3DUHA1 3DWHA1 3DXHA1 3DYHA1 3DZHA1 3EAHA1 3EDHA1 3EFHA1 3EGHA1 3EHHA1 3EJHA1 3ELHA1 3ENHA1 3EPHA1 3ERHA1 3ESHA1 3ETHA1 3EUHA1 3EWHA1 3EXHA1 3EYHA1 3EZHA1 3FEHA1 3GEHA1 3GFHA1 3GHHA1 3GJHA1 3GLHA1 3GNHA1 3GPHA1 3GQHA1 3GSHA1 3GTHA1 3GWHA1 3GXHA1 3GYHA1 3GZHA1 3HDHA1 3HEHA1 3HFHA1 3HGHA1 3HJHA1 3HLHA1 3HNHA1 3HPHA1 3HQHA1 3HRHA1 3HSHA1 3HTHA1 3HWHA1 3HXHA1 3JAHA1 3JBHA1 3JDHA1 3JEHA1 3JFHA1 3JGHA1 3JHHA1 3JJHA1 3JLHA1 3JNHA1 3JPHA1 3JQHA1 3JRHA1 3JSHA1 3JTHA1 3JUHA1 3JWHA1 3JXHA1 3JYHA1 3JZHA1 3LAHA1 3LBHA1 3LDHA1 3LEHA1 3LFHA1 3LHHA1 3LJHA1 3LLHA1 3LNHA1 3LPHA1 3LSHA1 3LTHA1 3LUHA1 3LWHA1 3LYHA1 3LZHA1 3NAHA1 3NBHA1 3NDHA1 3NEHA1 3NFHA1 3NGHA1 3NHHA1 3NJHA1 3NPHA1 3NQHA1 3NTHA1 3NUHA1 3NWHA1 3NXHA1 3NYHA1 3NZHA1 3PAHA1 3PBHA1 3PDHA1 3PEHA1 3PFHA1 3PGHA1 3PHHA1 3PJHA1 3PLHA1 3PNHA1 3PPHA1 3PQHA1 3PRHA1 3PSHA1 3PTHA1 3PUHA1 3PWHA1 3PXHA1 3PYHA1 3PZHA1 3QAHA1 3QBHA1 3QDHA1 3QEHA1 3QFHA1 3QGHA1 3QHHA1 3QJHA1 3QLHA1 3QNHA1 3QPHA1 3QQHA1 3QSHA1 3QTHA1 3QUHA1 3QXHA1 3QYHA1 3QZHA1 3RAHA1 3RDHA1 3REHA1 3RFHA1 3RGHA1 3RHHA1 3RJHA1 3RLHA1 3RNHA1 3RQHA1 3RRHA1 3RSHA1 3RTHA1 3RUHA1 3RWHA1 3RXHA1 3RYHA1 3SBHA1 3SDHA1 3SEHA1 3SFHA1 3SGHA1 3SHHA1 3SJHA1 3SNHA1 3SQHA1 3SSHA1 3STHA1 3SUHA1 3SWHA1 3SXHA1 3SYHA1 3SZHA1 3TAHA1 3TBHA1 3TDHA1 3TEHA1 3TFHA1 3TGHA1 3THHA1 3TLHA1 3TNHA1 3TPHA1 3TSHA1 3TTHA1 3TUHA1 3TXHA1 3TYHA1 3TZHA1 3UAHA1 3UBHA1 3UDHA1 3UEHA1 3UFHA1 3UGHA1 3UHHA1 3UJHA1 3UQHA1 3UXHA1 3WPHA1 3WSHA1 3WUHA1 3XDHA1 3XHHA1 3XJHA1 3YGHA1 3YHHA1 3YJHA1 3YLHA1 3YPHA1 3YQHA1 3YRHA1 3YUHA1 3YY

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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