AL3 7 postcode sector in the AL3 district

AL3 7 is a sector of the AL3 district: every postcode that starts AL3 7. It has 184 postcodes in use, 3 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 AL3 7 sector, and which are new since 2020

Map of every postcode in the AL3 7 sector, by new since 2020 Of the 184 postcodes in the AL3 7 sector that ONS places, 2 are new since 2020 and 182 were in use before 2020. Places named: St Albans, Harpenden, Redbourn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A1081A5183A414A1057 AL3 7AA: before 2020AL3 7AB: before 2020AL3 7AD: before 2020AL3 7AE: before 2020AL3 7AF: before 2020AL3 7AG: before 2020AL3 7AJ: before 2020AL3 7AL: before 2020AL3 7AN: before 2020AL3 7AP: before 2020AL3 7AQ: before 2020AL3 7AR: before 2020AL3 7AS: before 2020AL3 7AT: before 2020AL3 7AU: before 2020AL3 7AW: before 2020AL3 7BA: before 2020AL3 7BB: before 2020AL3 7BE: before 2020AL3 7BF: before 2020AL3 7BG: before 2020AL3 7BH: before 2020AL3 7BL: before 2020AL3 7BN: before 2020AL3 7BP: before 2020AL3 7BQ: before 2020AL3 7BS: before 2020AL3 7BU: before 2020AL3 7BW: before 2020AL3 7BX: before 2020AL3 7BY: before 2020AL3 7BZ: before 2020AL3 7DA: before 2020AL3 7DB: before 2020AL3 7DD: before 2020AL3 7DE: before 2020AL3 7DF: before 2020AL3 7DH: before 2020AL3 7DJ: before 2020AL3 7DL: before 2020AL3 7DN: before 2020AL3 7DP: before 2020AL3 7DQ: before 2020AL3 7DR: before 2020AL3 7DS: before 2020AL3 7DT: before 2020AL3 7DU: before 2020AL3 7DY: before 2020AL3 7DZ: before 2020AL3 7EA: before 2020AL3 7EB: before 2020AL3 7EG: before 2020AL3 7EL: before 2020AL3 7EN: before 2020AL3 7EP: before 2020AL3 7EQ: before 2020AL3 7ES: before 2020AL3 7ET: before 2020AL3 7EU: before 2020AL3 7EX: before 2020AL3 7EY: before 2020AL3 7EZ: before 2020AL3 7FA: before 2020AL3 7FD: before 2020AL3 7GA: before 2020AL3 7GD: before 2020AL3 7GE: before 2020AL3 7GF: before 2020AL3 7HA: before 2020AL3 7HB: before 2020AL3 7HD: before 2020AL3 7HE: before 2020AL3 7HF: before 2020AL3 7HP: before 2020AL3 7HQ: before 2020AL3 7HS: before 2020AL3 7HT: before 2020AL3 7HU: before 2020AL3 7HW: before 2020AL3 7HY: before 2020AL3 7HZ: before 2020AL3 7JA: before 2020AL3 7JB: before 2020AL3 7JD: before 2020AL3 7JE: before 2020AL3 7JF: before 2020AL3 7JG: before 2020AL3 7JH: before 2020AL3 7JJ: before 2020AL3 7JL: before 2020AL3 7JN: before 2020AL3 7JP: before 2020AL3 7JQ: before 2020AL3 7JR: before 2020AL3 7JU: before 2020AL3 7JW: before 2020AL3 7JX: before 2020AL3 7JY: before 2020AL3 7JZ: before 2020AL3 7LA: before 2020AL3 7LB: before 2020AL3 7LD: before 2020AL3 7LE: before 2020AL3 7LF: before 2020AL3 7LH: before 2020AL3 7LP: before 2020AL3 7LQ: before 2020AL3 7LR: before 2020AL3 7LS: before 2020AL3 7LT: before 2020AL3 7LU: before 2020AL3 7LY: before 2020AL3 7NB: before 2020AL3 7ND: before 2020AL3 7NG: before 2020AL3 7NH: before 2020AL3 7NJ: before 2020AL3 7NL: before 2020AL3 7NN: before 2020AL3 7NP: before 2020AL3 7NQ: before 2020AL3 7NS: before 2020AL3 7NW: before 2020AL3 7NX: before 2020AL3 7NZ: before 2020AL3 7PB: before 2020AL3 7PD: before 2020AL3 7PE: before 2020AL3 7PF: before 2020AL3 7PG: before 2020AL3 7PH: before 2020AL3 7PJ: before 2020AL3 7PL: before 2020AL3 7PN: before 2020AL3 7PP: before 2020AL3 7PR: before 2020AL3 7PS: before 2020AL3 7PT: before 2020AL3 7PU: before 2020AL3 7PW: before 2020AL3 7PX: before 2020AL3 7PY: before 2020AL3 7PZ: before 2020AL3 7QA: before 2020AL3 7QB: before 2020AL3 7QE: before 2020AL3 7QG: before 2020AL3 7QN: before 2020AL3 7QQ: before 2020AL3 7RG: before 2020AL3 7RQ: before 2020AL3 7SA: before 2020AL3 7ZR: before 2020AL3 7GH: before 2020AL3 7FB: new since 2020AL3 7FE: new since 2020 St AlbansHarpendenRedbourn Map of every postcode in the AL3 7 sector, by new since 2020 Of the 184 postcodes in the AL3 7 sector that ONS places, 2 are new since 2020 and 182 were in use before 2020. Places named: St Albans, Harpenden, Redbourn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A1081A5183A414 St AlbansHarpendenRedbourn
  • New since 2020: 2
  • In use before 2020: 182

Of the 184 postcodes in the AL3 7 sector that ONS places, 2 are new since 2020 and 182 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

AL3 7FEJune 2022AL3 7FBMay 2020

What do homes sell for in AL3 7?

Homes in AL3 7 sold for a typical £605,000 in the 12 months to August 2026, across 63 sales, up 3.4% on the 12 months before, HM Land Registry's figures show.

£605,000 typical price, the 12 months to August 2026
£585,000 12 months to August 2025
▲ up 3.4% on the 12 months before
  • Detached £908,500 16 sales
  • Semi-detached £612,500 24 sales
  • Terraced £460,000 18 sales
  • Flat or maisonette £350,000 5 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 AL3 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 AL3 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.

AL3 7AAAL3 7ABAL3 7ADAL3 7AEAL3 7AFAL3 7AGAL3 7AJAL3 7ALAL3 7ANAL3 7APAL3 7AQAL3 7ARAL3 7ASAL3 7ATAL3 7AUAL3 7AWAL3 7BAAL3 7BBAL3 7BDAL3 7BEAL3 7BFAL3 7BGAL3 7BHAL3 7BJAL3 7BLAL3 7BNAL3 7BPAL3 7BQAL3 7BSAL3 7BTAL3 7BUAL3 7BWAL3 7BXAL3 7BYAL3 7BZAL3 7DAAL3 7DBAL3 7DDAL3 7DEAL3 7DFAL3 7DGAL3 7DHAL3 7DJAL3 7DLAL3 7DNAL3 7DPAL3 7DQAL3 7DRAL3 7DSAL3 7DTAL3 7DUAL3 7DWAL3 7DYAL3 7DZAL3 7EAAL3 7EBAL3 7EGAL3 7ELAL3 7ENAL3 7EPAL3 7EQAL3 7ERAL3 7ESAL3 7ETAL3 7EUAL3 7EWAL3 7EXAL3 7EYAL3 7EZAL3 7FAAL3 7FBAL3 7FDAL3 7FEAL3 7GAAL3 7GDAL3 7GEAL3 7GFAL3 7GHAL3 7HAAL3 7HBAL3 7HDAL3 7HEAL3 7HFAL3 7HGAL3 7HNAL3 7HPAL3 7HQAL3 7HRAL3 7HSAL3 7HTAL3 7HUAL3 7HWAL3 7HXAL3 7HYAL3 7HZAL3 7JAAL3 7JBAL3 7JDAL3 7JEAL3 7JFAL3 7JGAL3 7JHAL3 7JJAL3 7JLAL3 7JNAL3 7JPAL3 7JQAL3 7JRAL3 7JSAL3 7JTAL3 7JUAL3 7JWAL3 7JXAL3 7JYAL3 7JZAL3 7LAAL3 7LBAL3 7LDAL3 7LEAL3 7LFAL3 7LGAL3 7LHAL3 7LJAL3 7LLAL3 7LNAL3 7LPAL3 7LQAL3 7LRAL3 7LSAL3 7LTAL3 7LUAL3 7LWAL3 7LXAL3 7LYAL3 7LZAL3 7NBAL3 7NDAL3 7NGAL3 7NHAL3 7NJAL3 7NLAL3 7NNAL3 7NPAL3 7NQAL3 7NRAL3 7NSAL3 7NTAL3 7NUAL3 7NWAL3 7NXAL3 7NYAL3 7NZAL3 7PAAL3 7PBAL3 7PDAL3 7PEAL3 7PFAL3 7PGAL3 7PHAL3 7PJAL3 7PLAL3 7PNAL3 7PPAL3 7PQAL3 7PRAL3 7PSAL3 7PTAL3 7PUAL3 7PWAL3 7PXAL3 7PYAL3 7PZAL3 7QAAL3 7QBAL3 7QEAL3 7QFAL3 7QGAL3 7QNAL3 7QPAL3 7QQAL3 7RGAL3 7RQAL3 7SAAL3 7ZR

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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