AL1 3 postcode sector in the AL1 district

AL1 3 is a sector of the AL1 district: every postcode that starts AL1 3. It has 257 postcodes in use, 25 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 AL1 3 sector, by flood risk

Map of every postcode in the AL1 3 sector, by flood risk Of the 257 postcodes in the AL1 3 sector that ONS places, 257 are not on the Environment Agency's at-risk list. Places named: St Albans. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1057 AL1 3AA: not on the flood risk listAL1 3AB: not on the flood risk listAL1 3AE: not on the flood risk listAL1 3AF: not on the flood risk listAL1 3AG: not on the flood risk listAL1 3AH: not on the flood risk listAL1 3AJ: not on the flood risk listAL1 3AL: not on the flood risk listAL1 3AN: not on the flood risk listAL1 3AP: not on the flood risk listAL1 3AQ: not on the flood risk listAL1 3AR: not on the flood risk listAL1 3AS: not on the flood risk listAL1 3AT: not on the flood risk listAL1 3AU: not on the flood risk listAL1 3AW: not on the flood risk listAL1 3AX: not on the flood risk listAL1 3AY: not on the flood risk listAL1 3AZ: not on the flood risk listAL1 3BA: not on the flood risk listAL1 3BB: not on the flood risk listAL1 3BD: not on the flood risk listAL1 3BE: not on the flood risk listAL1 3BF: not on the flood risk listAL1 3BG: not on the flood risk listAL1 3BH: not on the flood risk listAL1 3BJ: not on the flood risk listAL1 3BL: not on the flood risk listAL1 3BP: not on the flood risk listAL1 3BS: not on the flood risk listAL1 3BT: not on the flood risk listAL1 3BU: not on the flood risk listAL1 3BW: not on the flood risk listAL1 3BX: not on the flood risk listAL1 3BY: not on the flood risk listAL1 3BZ: not on the flood risk listAL1 3DA: not on the flood risk listAL1 3DB: not on the flood risk listAL1 3DD: not on the flood risk listAL1 3DE: not on the flood risk listAL1 3DH: not on the flood risk listAL1 3DP: not on the flood risk listAL1 3DQ: not on the flood risk listAL1 3DU: not on the flood risk listAL1 3DY: not on the flood risk listAL1 3EA: not on the flood risk listAL1 3EB: not on the flood risk listAL1 3ED: not on the flood risk listAL1 3EE: not on the flood risk listAL1 3EG: not on the flood risk listAL1 3EH: not on the flood risk listAL1 3EL: not on the flood risk listAL1 3EN: not on the flood risk listAL1 3ER: not on the flood risk listAL1 3ES: not on the flood risk listAL1 3ET: not on the flood risk listAL1 3EU: not on the flood risk listAL1 3EW: not on the flood risk listAL1 3EX: not on the flood risk listAL1 3EY: not on the flood risk listAL1 3EZ: not on the flood risk listAL1 3FH: not on the flood risk listAL1 3FJ: not on the flood risk listAL1 3FL: not on the flood risk listAL1 3FN: not on the flood risk listAL1 3FP: not on the flood risk listAL1 3FR: not on the flood risk listAL1 3FS: not on the flood risk listAL1 3FT: not on the flood risk listAL1 3FU: not on the flood risk listAL1 3FW: not on the flood risk listAL1 3FX: not on the flood risk listAL1 3FY: not on the flood risk listAL1 3FZ: not on the flood risk listAL1 3GF: not on the flood risk listAL1 3GG: not on the flood risk listAL1 3GH: not on the flood risk listAL1 3GJ: not on the flood risk listAL1 3GL: not on the flood risk listAL1 3GN: not on the flood risk listAL1 3GP: not on the flood risk listAL1 3GQ: not on the flood risk listAL1 3GR: not on the flood risk listAL1 3GS: not on the flood risk listAL1 3GT: not on the flood risk listAL1 3GU: not on the flood risk listAL1 3GW: not on the flood risk listAL1 3GX: not on the flood risk listAL1 3GZ: not on the flood risk listAL1 3HA: not on the flood risk listAL1 3HB: not on the flood risk listAL1 3HD: not on the flood risk listAL1 3HE: not on the flood risk listAL1 3HF: not on the flood risk listAL1 3HG: not on the flood risk listAL1 3HL: not on the flood risk listAL1 3HP: not on the flood risk listAL1 3HS: not on the flood risk listAL1 3HT: not on the flood risk listAL1 3HZ: not on the flood risk listAL1 3JB: not on the flood risk listAL1 3JD: not on the flood risk listAL1 3JE: not on the flood risk listAL1 3JG: not on the flood risk listAL1 3JJ: not on the flood risk listAL1 3JQ: not on the flood risk listAL1 3JU: not on the flood risk listAL1 3JW: not on the flood risk listAL1 3JX: not on the flood risk listAL1 3JZ: not on the flood risk listAL1 3LB: not on the flood risk listAL1 3LD: not on the flood risk listAL1 3LE: not on the flood risk listAL1 3LF: not on the flood risk listAL1 3LJ: not on the flood risk listAL1 3LP: not on the flood risk listAL1 3LQ: not on the flood risk listAL1 3LS: not on the flood risk listAL1 3LT: not on the flood risk listAL1 3LW: not on the flood risk listAL1 3LX: not on the flood risk listAL1 3LY: not on the flood risk listAL1 3LZ: not on the flood risk listAL1 3NA: not on the flood risk listAL1 3NF: not on the flood risk listAL1 3NG: not on the flood risk listAL1 3NL: not on the flood risk listAL1 3NN: not on the flood risk listAL1 3NP: not on the flood risk listAL1 3NR: not on the flood risk listAL1 3NS: not on the flood risk listAL1 3NT: not on the flood risk listAL1 3NU: not on the flood risk listAL1 3NX: not on the flood risk listAL1 3NZ: not on the flood risk listAL1 3PB: not on the flood risk listAL1 3PD: not on the flood risk listAL1 3PE: not on the flood risk listAL1 3PF: not on the flood risk listAL1 3PG: not on the flood risk listAL1 3PH: not on the flood risk listAL1 3PJ: not on the flood risk listAL1 3PL: not on the flood risk listAL1 3PN: not on the flood risk listAL1 3PP: not on the flood risk listAL1 3PQ: not on the flood risk listAL1 3PR: not on the flood risk listAL1 3PS: not on the flood risk listAL1 3PT: not on the flood risk listAL1 3PW: not on the flood risk listAL1 3PX: not on the flood risk listAL1 3PY: not on the flood risk listAL1 3PZ: not on the flood risk listAL1 3QA: not on the flood risk listAL1 3QB: not on the flood risk listAL1 3QD: not on the flood risk listAL1 3QE: not on the flood risk listAL1 3QF: not on the flood risk listAL1 3QG: not on the flood risk listAL1 3QH: not on the flood risk listAL1 3QJ: not on the flood risk listAL1 3QL: not on the flood risk listAL1 3QN: not on the flood risk listAL1 3QP: not on the flood risk listAL1 3QQ: not on the flood risk listAL1 3QR: not on the flood risk listAL1 3QS: not on the flood risk listAL1 3QT: not on the flood risk listAL1 3QU: not on the flood risk listAL1 3QW: not on the flood risk listAL1 3QX: not on the flood risk listAL1 3QY: not on the flood risk listAL1 3QZ: not on the flood risk listAL1 3RB: not on the flood risk listAL1 3RD: not on the flood risk listAL1 3RE: not on the flood risk listAL1 3RF: not on the flood risk listAL1 3RG: not on the flood risk listAL1 3RL: not on the flood risk listAL1 3RP: not on the flood risk listAL1 3RQ: not on the flood risk listAL1 3RR: not on the flood risk listAL1 3RT: not on the flood risk listAL1 3RU: not on the flood risk listAL1 3RW: not on the flood risk listAL1 3RY: not on the flood risk listAL1 3RZ: not on the flood risk listAL1 3SA: not on the flood risk listAL1 3SB: not on the flood risk listAL1 3SD: not on the flood risk listAL1 3SE: not on the flood risk listAL1 3SF: not on the flood risk listAL1 3SH: not on the flood risk listAL1 3SJ: not on the flood risk listAL1 3SL: not on the flood risk listAL1 3SP: not on the flood risk listAL1 3SQ: not on the flood risk listAL1 3SR: not on the flood risk listAL1 3ST: not on the flood risk listAL1 3SW: not on the flood risk listAL1 3SY: not on the flood risk listAL1 3TA: not on the flood risk listAL1 3TB: not on the flood risk listAL1 3TE: not on the flood risk listAL1 3TF: not on the flood risk listAL1 3TG: not on the flood risk listAL1 3TH: not on the flood risk listAL1 3TJ: not on the flood risk listAL1 3TL: not on the flood risk listAL1 3TR: not on the flood risk listAL1 3TU: not on the flood risk listAL1 3TW: not on the flood risk listAL1 3TX: not on the flood risk listAL1 3UA: not on the flood risk listAL1 3UB: not on the flood risk listAL1 3UD: not on the flood risk listAL1 3UE: not on the flood risk listAL1 3UG: not on the flood risk listAL1 3UH: not on the flood risk listAL1 3UJ: not on the flood risk listAL1 3UL: not on the flood risk listAL1 3UN: not on the flood risk listAL1 3UP: not on the flood risk listAL1 3UQ: not on the flood risk listAL1 3UR: not on the flood risk listAL1 3UU: not on the flood risk listAL1 3UZ: not on the flood risk listAL1 3WA: not on the flood risk listAL1 3XB: not on the flood risk listAL1 3XF: not on the flood risk listAL1 3XG: not on the flood risk listAL1 3XH: not on the flood risk listAL1 3XL: not on the flood risk listAL1 3XQ: not on the flood risk listAL1 3XR: not on the flood risk listAL1 3XS: not on the flood risk listAL1 3XT: not on the flood risk listAL1 3XU: not on the flood risk listAL1 3XW: not on the flood risk listAL1 3XX: not on the flood risk listAL1 3XY: not on the flood risk listAL1 3XZ: not on the flood risk listAL1 3YD: not on the flood risk listAL1 3YJ: not on the flood risk listAL1 3YN: not on the flood risk listAL1 3YQ: not on the flood risk listAL1 3YS: not on the flood risk list St Albans Map of every postcode in the AL1 3 sector, by flood risk Of the 257 postcodes in the AL1 3 sector that ONS places, 257 are not on the Environment Agency's at-risk list. Places named: St Albans. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. St Albans
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 257

Of the 257 postcodes in the AL1 3 sector that ONS places, 257 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. 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; 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

What do homes sell for in AL1 3?

Homes in AL1 3 sold for a typical £371,000 in the 12 months to August 2026, across 96 sales, down 11% on the 12 months before, HM Land Registry's figures show.

£371,000 typical price, the 12 months to August 2026
£416,750 12 months to August 2025
▼ down 11% on the 12 months before
  • Detached £1,608,000 6 sales
  • Semi-detached £1,375,000 5 sales
  • Terraced £697,500 16 sales
  • Flat or maisonette £325,000 69 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 AL1 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 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 AL1 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.

AL1 3AAAL1 3ABAL1 3AEAL1 3AFAL1 3AGAL1 3AHAL1 3AJAL1 3ALAL1 3ANAL1 3APAL1 3AQAL1 3ARAL1 3ASAL1 3ATAL1 3AUAL1 3AWAL1 3AXAL1 3AYAL1 3AZAL1 3BAAL1 3BBAL1 3BDAL1 3BEAL1 3BFAL1 3BGAL1 3BHAL1 3BJAL1 3BLAL1 3BPAL1 3BQAL1 3BSAL1 3BTAL1 3BUAL1 3BWAL1 3BXAL1 3BYAL1 3BZAL1 3DAAL1 3DBAL1 3DDAL1 3DEAL1 3DGAL1 3DHAL1 3DPAL1 3DQAL1 3DUAL1 3DYAL1 3EAAL1 3EBAL1 3EDAL1 3EEAL1 3EGAL1 3EHAL1 3ELAL1 3ENAL1 3ERAL1 3ESAL1 3ETAL1 3EUAL1 3EWAL1 3EXAL1 3EYAL1 3EZAL1 3FHAL1 3FJAL1 3FLAL1 3FNAL1 3FPAL1 3FRAL1 3FSAL1 3FTAL1 3FUAL1 3FWAL1 3FXAL1 3FYAL1 3FZAL1 3GFAL1 3GGAL1 3GHAL1 3GJAL1 3GLAL1 3GNAL1 3GPAL1 3GQAL1 3GRAL1 3GSAL1 3GTAL1 3GUAL1 3GWAL1 3GXAL1 3GZAL1 3HAAL1 3HBAL1 3HDAL1 3HEAL1 3HFAL1 3HGAL1 3HLAL1 3HPAL1 3HSAL1 3HTAL1 3HZAL1 3JBAL1 3JDAL1 3JEAL1 3JGAL1 3JJAL1 3JQAL1 3JUAL1 3JWAL1 3JXAL1 3JZAL1 3LBAL1 3LDAL1 3LEAL1 3LFAL1 3LHAL1 3LJAL1 3LPAL1 3LQAL1 3LSAL1 3LTAL1 3LWAL1 3LXAL1 3LYAL1 3LZAL1 3NAAL1 3NFAL1 3NGAL1 3NLAL1 3NNAL1 3NPAL1 3NRAL1 3NSAL1 3NTAL1 3NUAL1 3NXAL1 3NZAL1 3PBAL1 3PDAL1 3PEAL1 3PFAL1 3PGAL1 3PHAL1 3PJAL1 3PLAL1 3PNAL1 3PPAL1 3PQAL1 3PRAL1 3PSAL1 3PTAL1 3PWAL1 3PXAL1 3PYAL1 3PZAL1 3QAAL1 3QBAL1 3QDAL1 3QEAL1 3QFAL1 3QGAL1 3QHAL1 3QJAL1 3QLAL1 3QNAL1 3QPAL1 3QQAL1 3QRAL1 3QSAL1 3QTAL1 3QUAL1 3QWAL1 3QXAL1 3QYAL1 3QZAL1 3RBAL1 3RDAL1 3REAL1 3RFAL1 3RGAL1 3RLAL1 3RPAL1 3RQAL1 3RRAL1 3RTAL1 3RUAL1 3RWAL1 3RYAL1 3RZAL1 3SAAL1 3SBAL1 3SDAL1 3SEAL1 3SFAL1 3SHAL1 3SJAL1 3SLAL1 3SNAL1 3SPAL1 3SQAL1 3SRAL1 3STAL1 3SWAL1 3SYAL1 3TAAL1 3TBAL1 3TEAL1 3TFAL1 3TGAL1 3THAL1 3TJAL1 3TLAL1 3TNAL1 3TRAL1 3TTAL1 3TUAL1 3TWAL1 3TXAL1 3UAAL1 3UBAL1 3UDAL1 3UEAL1 3UFAL1 3UGAL1 3UHAL1 3UJAL1 3ULAL1 3UNAL1 3UPAL1 3UQAL1 3URAL1 3UUAL1 3UZAL1 3WAAL1 3XBAL1 3XFAL1 3XGAL1 3XHAL1 3XLAL1 3XQAL1 3XRAL1 3XSAL1 3XTAL1 3XUAL1 3XWAL1 3XXAL1 3XYAL1 3XZAL1 3YDAL1 3YHAL1 3YJAL1 3YNAL1 3YQAL1 3YSAL1 3YTAL1 3ZJ

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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