HA3 5 postcode sector in the HA3 district

HA3 5 is a sector of the HA3 district: every postcode that starts HA3 5. It has 171 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 HA3 5 sector, and which are new since 2020

Map of every postcode in the HA3 5 sector, by new since 2020 Of the 171 postcodes in the HA3 5 sector that ONS places, 2 are new since 2020 and 169 were in use before 2020. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HA3 5AA: before 2020HA3 5AB: before 2020HA3 5AE: before 2020HA3 5AH: before 2020HA3 5AN: before 2020HA3 5AP: before 2020HA3 5AR: before 2020HA3 5AS: before 2020HA3 5AT: before 2020HA3 5AU: before 2020HA3 5AX: before 2020HA3 5AY: before 2020HA3 5AZ: before 2020HA3 5BA: before 2020HA3 5BB: before 2020HA3 5BD: before 2020HA3 5BJ: before 2020HA3 5BS: before 2020HA3 5BU: before 2020HA3 5BY: before 2020HA3 5DB: before 2020HA3 5DF: before 2020HA3 5DL: before 2020HA3 5DQ: before 2020HA3 5DS: before 2020HA3 5DT: before 2020HA3 5DU: before 2020HA3 5DX: before 2020HA3 5DY: before 2020HA3 5DZ: before 2020HA3 5EA: before 2020HA3 5EB: before 2020HA3 5EE: before 2020HA3 5EG: before 2020HA3 5EL: before 2020HA3 5EQ: before 2020HA3 5ES: before 2020HA3 5EU: before 2020HA3 5EX: before 2020HA3 5EY: before 2020HA3 5EZ: before 2020HA3 5FB: before 2020HA3 5FD: before 2020HA3 5FF: before 2020HA3 5GA: before 2020HA3 5HA: before 2020HA3 5HB: before 2020HA3 5HD: before 2020HA3 5HE: before 2020HA3 5HF: before 2020HA3 5HG: before 2020HA3 5HH: before 2020HA3 5HJ: before 2020HA3 5HN: before 2020HA3 5HP: before 2020HA3 5HQ: before 2020HA3 5HR: before 2020HA3 5HS: before 2020HA3 5HT: before 2020HA3 5HU: before 2020HA3 5HW: before 2020HA3 5HX: before 2020HA3 5HY: before 2020HA3 5HZ: before 2020HA3 5JA: before 2020HA3 5JD: before 2020HA3 5JF: before 2020HA3 5JH: before 2020HA3 5JJ: before 2020HA3 5JL: before 2020HA3 5JN: before 2020HA3 5JP: before 2020HA3 5JQ: before 2020HA3 5JR: before 2020HA3 5JS: before 2020HA3 5JT: before 2020HA3 5JU: before 2020HA3 5JW: before 2020HA3 5JX: before 2020HA3 5JY: before 2020HA3 5JZ: before 2020HA3 5LA: before 2020HA3 5LB: before 2020HA3 5LD: before 2020HA3 5LE: before 2020HA3 5LF: before 2020HA3 5LG: before 2020HA3 5LP: before 2020HA3 5LR: before 2020HA3 5LS: before 2020HA3 5LT: before 2020HA3 5LU: before 2020HA3 5LX: before 2020HA3 5LY: before 2020HA3 5LZ: before 2020HA3 5NA: before 2020HA3 5NB: before 2020HA3 5ND: before 2020HA3 5NE: before 2020HA3 5NF: before 2020HA3 5NG: before 2020HA3 5NH: before 2020HA3 5NJ: before 2020HA3 5NL: before 2020HA3 5NN: before 2020HA3 5NP: before 2020HA3 5NQ: before 2020HA3 5NR: before 2020HA3 5NS: before 2020HA3 5NT: before 2020HA3 5NU: before 2020HA3 5NW: before 2020HA3 5NX: before 2020HA3 5NY: before 2020HA3 5NZ: before 2020HA3 5PA: before 2020HA3 5PB: before 2020HA3 5PE: before 2020HA3 5PH: before 2020HA3 5PJ: before 2020HA3 5PL: before 2020HA3 5PN: before 2020HA3 5PP: before 2020HA3 5PQ: before 2020HA3 5PR: before 2020HA3 5PS: before 2020HA3 5PT: before 2020HA3 5PU: before 2020HA3 5PW: before 2020HA3 5PX: before 2020HA3 5PY: before 2020HA3 5PZ: before 2020HA3 5QA: before 2020HA3 5QB: before 2020HA3 5QH: before 2020HA3 5QL: before 2020HA3 5QU: before 2020HA3 5QX: before 2020HA3 5QY: before 2020HA3 5QZ: before 2020HA3 5RA: before 2020HA3 5RB: before 2020HA3 5RE: before 2020HA3 5RF: before 2020HA3 5RG: before 2020HA3 5RJ: before 2020HA3 5RL: before 2020HA3 5RN: before 2020HA3 5RP: before 2020HA3 5RQ: before 2020HA3 5RS: before 2020HA3 5RT: before 2020HA3 5RU: before 2020HA3 5RX: before 2020HA3 5RY: before 2020HA3 5RZ: before 2020HA3 5SA: before 2020HA3 5SB: before 2020HA3 5SD: before 2020HA3 5SE: before 2020HA3 5SH: before 2020HA3 5TE: before 2020HA3 5TJ: before 2020HA3 5UB: before 2020HA3 5WD: before 2020HA3 5FH: new since 2020 Harrow Map of every postcode in the HA3 5 sector, by new since 2020 Of the 171 postcodes in the HA3 5 sector that ONS places, 2 are new since 2020 and 169 were in use before 2020. Places named: Harrow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Harrow
  • New since 2020: 2
  • In use before 2020: 169

Of the 171 postcodes in the HA3 5 sector that ONS places, 2 are new since 2020 and 169 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. 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

The 2 newest postcodes

HA3 5FJJanuary 2023HA3 5FHJuly 2022

What do homes sell for in HA3 5?

Homes in HA3 5 sold for a typical £470,000 in the 12 months to August 2026, across 37 sales, up 9.7% on the 12 months before, HM Land Registry's figures show.

£470,000 typical price, the 12 months to August 2026
£428,500 12 months to August 2025
▲ up 9.7% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £535,000 11 sales
  • Terraced £515,000 9 sales
  • Flat or maisonette £292,500 16 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 5. 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 5

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 5AAHA3 5ABHA3 5AEHA3 5AHHA3 5ANHA3 5APHA3 5ARHA3 5ASHA3 5ATHA3 5AUHA3 5AXHA3 5AYHA3 5AZHA3 5BAHA3 5BBHA3 5BDHA3 5BJHA3 5BSHA3 5BUHA3 5BYHA3 5DBHA3 5DFHA3 5DLHA3 5DQHA3 5DSHA3 5DTHA3 5DUHA3 5DXHA3 5DYHA3 5DZHA3 5EAHA3 5EBHA3 5EEHA3 5EGHA3 5ELHA3 5EQHA3 5ESHA3 5EUHA3 5EXHA3 5EYHA3 5EZHA3 5FBHA3 5FDHA3 5FEHA3 5FFHA3 5FHHA3 5FJHA3 5GAHA3 5HAHA3 5HBHA3 5HDHA3 5HEHA3 5HFHA3 5HGHA3 5HHHA3 5HJHA3 5HNHA3 5HPHA3 5HQHA3 5HRHA3 5HSHA3 5HTHA3 5HUHA3 5HWHA3 5HXHA3 5HYHA3 5HZHA3 5JAHA3 5JDHA3 5JFHA3 5JHHA3 5JJHA3 5JLHA3 5JNHA3 5JPHA3 5JQHA3 5JRHA3 5JSHA3 5JTHA3 5JUHA3 5JWHA3 5JXHA3 5JYHA3 5JZHA3 5LAHA3 5LBHA3 5LDHA3 5LEHA3 5LFHA3 5LGHA3 5LPHA3 5LRHA3 5LSHA3 5LTHA3 5LUHA3 5LXHA3 5LYHA3 5LZHA3 5NAHA3 5NBHA3 5NDHA3 5NEHA3 5NFHA3 5NGHA3 5NHHA3 5NJHA3 5NLHA3 5NNHA3 5NPHA3 5NQHA3 5NRHA3 5NSHA3 5NTHA3 5NUHA3 5NWHA3 5NXHA3 5NYHA3 5NZHA3 5PAHA3 5PBHA3 5PEHA3 5PHHA3 5PJHA3 5PLHA3 5PNHA3 5PPHA3 5PQHA3 5PRHA3 5PSHA3 5PTHA3 5PUHA3 5PWHA3 5PXHA3 5PYHA3 5PZHA3 5QAHA3 5QBHA3 5QHHA3 5QJHA3 5QLHA3 5QUHA3 5QXHA3 5QYHA3 5QZHA3 5RAHA3 5RBHA3 5REHA3 5RFHA3 5RGHA3 5RJHA3 5RLHA3 5RNHA3 5RPHA3 5RQHA3 5RSHA3 5RTHA3 5RUHA3 5RXHA3 5RYHA3 5RZHA3 5SAHA3 5SBHA3 5SDHA3 5SEHA3 5SHHA3 5TEHA3 5TJHA3 5UBHA3 5WDHA3 5XHHA3 5XL

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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