AL7 3 postcode sector in the AL7 district

AL7 3 is a sector of the AL7 district: every postcode that starts AL7 3. It has 236 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 AL7 3 sector, and which are new since 2020

Map of every postcode in the AL7 3 sector, by new since 2020 Of the 236 postcodes in the AL7 3 sector that ONS places, 8 are new since 2020 and 228 were in use before 2020. Places named: Welwyn Garden City. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. AL7 3AB: before 2020AL7 3AE: before 2020AL7 3AF: before 2020AL7 3AG: before 2020AL7 3AJ: before 2020AL7 3AX: before 2020AL7 3BA: before 2020AL7 3BB: before 2020AL7 3BE: before 2020AL7 3BH: before 2020AL7 3BL: before 2020AL7 3BN: before 2020AL7 3BQ: before 2020AL7 3BT: before 2020AL7 3BX: before 2020AL7 3BY: before 2020AL7 3BZ: before 2020AL7 3DA: before 2020AL7 3DB: before 2020AL7 3DD: before 2020AL7 3DE: before 2020AL7 3DF: before 2020AL7 3DG: before 2020AL7 3DJ: before 2020AL7 3DQ: before 2020AL7 3DU: before 2020AL7 3DX: before 2020AL7 3DY: before 2020AL7 3DZ: before 2020AL7 3EA: before 2020AL7 3EB: before 2020AL7 3EE: before 2020AL7 3EF: before 2020AL7 3EG: before 2020AL7 3EJ: before 2020AL7 3EL: before 2020AL7 3EN: before 2020AL7 3EP: before 2020AL7 3EQ: before 2020AL7 3ER: before 2020AL7 3ES: before 2020AL7 3ET: before 2020AL7 3EU: before 2020AL7 3EW: before 2020AL7 3EX: before 2020AL7 3EY: before 2020AL7 3EZ: before 2020AL7 3FA: before 2020AL7 3FB: before 2020AL7 3FD: before 2020AL7 3HA: before 2020AL7 3HB: before 2020AL7 3HD: before 2020AL7 3HE: before 2020AL7 3HF: before 2020AL7 3HG: before 2020AL7 3HH: before 2020AL7 3HJ: before 2020AL7 3HL: before 2020AL7 3HN: before 2020AL7 3HQ: before 2020AL7 3HR: before 2020AL7 3HS: before 2020AL7 3HT: before 2020AL7 3HU: before 2020AL7 3HW: before 2020AL7 3HX: before 2020AL7 3HY: before 2020AL7 3HZ: before 2020AL7 3JA: before 2020AL7 3JD: before 2020AL7 3JE: before 2020AL7 3JF: before 2020AL7 3JG: before 2020AL7 3JH: before 2020AL7 3JJ: before 2020AL7 3JN: before 2020AL7 3JP: before 2020AL7 3JQ: before 2020AL7 3JR: before 2020AL7 3JS: before 2020AL7 3JT: before 2020AL7 3JU: before 2020AL7 3JW: before 2020AL7 3JX: before 2020AL7 3JY: before 2020AL7 3JZ: before 2020AL7 3LA: before 2020AL7 3LB: before 2020AL7 3LD: before 2020AL7 3LE: before 2020AL7 3LF: before 2020AL7 3LG: before 2020AL7 3LH: before 2020AL7 3LJ: before 2020AL7 3LL: before 2020AL7 3LN: before 2020AL7 3LP: before 2020AL7 3LQ: before 2020AL7 3LR: before 2020AL7 3LS: before 2020AL7 3LT: before 2020AL7 3LW: before 2020AL7 3LX: before 2020AL7 3LY: before 2020AL7 3LZ: before 2020AL7 3NA: before 2020AL7 3NB: before 2020AL7 3ND: before 2020AL7 3NE: before 2020AL7 3NF: before 2020AL7 3NG: before 2020AL7 3NH: before 2020AL7 3NJ: before 2020AL7 3NL: before 2020AL7 3NN: before 2020AL7 3NP: before 2020AL7 3NQ: before 2020AL7 3NR: before 2020AL7 3NS: before 2020AL7 3NT: before 2020AL7 3NU: before 2020AL7 3NW: before 2020AL7 3NX: before 2020AL7 3NY: before 2020AL7 3NZ: before 2020AL7 3PA: before 2020AL7 3PB: before 2020AL7 3PD: before 2020AL7 3PG: before 2020AL7 3PH: before 2020AL7 3PJ: before 2020AL7 3PL: before 2020AL7 3PN: before 2020AL7 3PP: before 2020AL7 3PU: before 2020AL7 3PW: before 2020AL7 3PY: before 2020AL7 3PZ: before 2020AL7 3QA: before 2020AL7 3QB: before 2020AL7 3QD: before 2020AL7 3QE: before 2020AL7 3QF: before 2020AL7 3QG: before 2020AL7 3QH: before 2020AL7 3QJ: before 2020AL7 3QL: before 2020AL7 3QP: before 2020AL7 3QQ: before 2020AL7 3QR: before 2020AL7 3QS: before 2020AL7 3QT: before 2020AL7 3QW: before 2020AL7 3QZ: before 2020AL7 3RA: before 2020AL7 3RB: before 2020AL7 3RD: before 2020AL7 3RE: before 2020AL7 3RF: before 2020AL7 3RG: before 2020AL7 3RH: before 2020AL7 3RJ: before 2020AL7 3RL: before 2020AL7 3RN: before 2020AL7 3RP: before 2020AL7 3RQ: before 2020AL7 3RR: before 2020AL7 3RS: before 2020AL7 3RT: before 2020AL7 3RU: before 2020AL7 3RW: before 2020AL7 3RX: before 2020AL7 3RY: before 2020AL7 3RZ: before 2020AL7 3SA: before 2020AL7 3SB: before 2020AL7 3SD: before 2020AL7 3SF: before 2020AL7 3SH: before 2020AL7 3SJ: before 2020AL7 3SN: before 2020AL7 3SR: before 2020AL7 3ST: before 2020AL7 3SX: before 2020AL7 3SY: before 2020AL7 3TB: before 2020AL7 3TD: before 2020AL7 3TE: before 2020AL7 3TF: before 2020AL7 3TG: before 2020AL7 3TH: before 2020AL7 3TJ: before 2020AL7 3TL: before 2020AL7 3TN: before 2020AL7 3TP: before 2020AL7 3TQ: before 2020AL7 3TR: before 2020AL7 3TS: before 2020AL7 3TT: before 2020AL7 3TU: before 2020AL7 3TW: before 2020AL7 3UA: before 2020AL7 3UB: before 2020AL7 3UD: before 2020AL7 3UE: before 2020AL7 3UH: before 2020AL7 3UJ: before 2020AL7 3UN: before 2020AL7 3UP: before 2020AL7 3UQ: before 2020AL7 3UU: before 2020AL7 3UW: before 2020AL7 3UX: before 2020AL7 3UZ: before 2020AL7 3XA: before 2020AL7 3XB: before 2020AL7 3XD: before 2020AL7 3XE: before 2020AL7 3XF: before 2020AL7 3XG: before 2020AL7 3XH: before 2020AL7 3XJ: before 2020AL7 3XL: before 2020AL7 3XN: before 2020AL7 3XP: before 2020AL7 3XW: before 2020AL7 3FE: new since 2020AL7 3FH: new since 2020AL7 3FL: new since 2020AL7 3FQ: new since 2020AL7 3GB: new since 2020AL7 3UL: new since 2020 Welwyn Garden City Map of every postcode in the AL7 3 sector, by new since 2020 Of the 236 postcodes in the AL7 3 sector that ONS places, 8 are new since 2020 and 228 were in use before 2020. Places named: Welwyn Garden City. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Welwyn Garden City
  • New since 2020: 8
  • In use before 2020: 228

Of the 236 postcodes in the AL7 3 sector that ONS places, 8 are new since 2020 and 228 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 5 newest postcodes

AL7 3FQMay 2026AL7 3ULMay 2026AL7 3FEJuly 2023AL7 3FGApril 2023AL7 3FLApril 2023

What do homes sell for in AL7 3?

Homes in AL7 3 sold for a typical £389,950 in the 12 months to August 2026, across 99 sales, up 1.9% on the 12 months before, HM Land Registry's figures show.

£389,950 typical price, the 12 months to August 2026
£382,500 12 months to August 2025
▲ up 1.9% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £426,250 18 sales
  • Terraced £408,000 49 sales
  • Flat or maisonette £251,250 28 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 AL7 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 AL7 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.

AL7 3ABAL7 3AEAL7 3AFAL7 3AGAL7 3AJAL7 3AXAL7 3BAAL7 3BBAL7 3BEAL7 3BHAL7 3BLAL7 3BNAL7 3BQAL7 3BTAL7 3BXAL7 3BYAL7 3BZAL7 3DAAL7 3DBAL7 3DDAL7 3DEAL7 3DFAL7 3DGAL7 3DJAL7 3DQAL7 3DUAL7 3DXAL7 3DYAL7 3DZAL7 3EAAL7 3EBAL7 3EEAL7 3EFAL7 3EGAL7 3EJAL7 3ELAL7 3ENAL7 3EPAL7 3EQAL7 3ERAL7 3ESAL7 3ETAL7 3EUAL7 3EWAL7 3EXAL7 3EYAL7 3EZAL7 3FAAL7 3FBAL7 3FDAL7 3FEAL7 3FGAL7 3FHAL7 3FJAL7 3FLAL7 3FQAL7 3GBAL7 3HAAL7 3HBAL7 3HDAL7 3HEAL7 3HFAL7 3HGAL7 3HHAL7 3HJAL7 3HLAL7 3HNAL7 3HQAL7 3HRAL7 3HSAL7 3HTAL7 3HUAL7 3HWAL7 3HXAL7 3HYAL7 3HZAL7 3JAAL7 3JDAL7 3JEAL7 3JFAL7 3JGAL7 3JHAL7 3JJAL7 3JNAL7 3JPAL7 3JQAL7 3JRAL7 3JSAL7 3JTAL7 3JUAL7 3JWAL7 3JXAL7 3JYAL7 3JZAL7 3LAAL7 3LBAL7 3LDAL7 3LEAL7 3LFAL7 3LGAL7 3LHAL7 3LJAL7 3LLAL7 3LNAL7 3LPAL7 3LQAL7 3LRAL7 3LSAL7 3LTAL7 3LWAL7 3LXAL7 3LYAL7 3LZAL7 3NAAL7 3NBAL7 3NDAL7 3NEAL7 3NFAL7 3NGAL7 3NHAL7 3NJAL7 3NLAL7 3NNAL7 3NPAL7 3NQAL7 3NRAL7 3NSAL7 3NTAL7 3NUAL7 3NWAL7 3NXAL7 3NYAL7 3NZAL7 3PAAL7 3PBAL7 3PDAL7 3PGAL7 3PHAL7 3PJAL7 3PLAL7 3PNAL7 3PPAL7 3PUAL7 3PWAL7 3PXAL7 3PYAL7 3PZAL7 3QAAL7 3QBAL7 3QDAL7 3QEAL7 3QFAL7 3QGAL7 3QHAL7 3QJAL7 3QLAL7 3QPAL7 3QQAL7 3QRAL7 3QSAL7 3QTAL7 3QWAL7 3QZAL7 3RAAL7 3RBAL7 3RDAL7 3REAL7 3RFAL7 3RGAL7 3RHAL7 3RJAL7 3RLAL7 3RNAL7 3RPAL7 3RQAL7 3RRAL7 3RSAL7 3RTAL7 3RUAL7 3RWAL7 3RXAL7 3RYAL7 3RZAL7 3SAAL7 3SBAL7 3SDAL7 3SFAL7 3SHAL7 3SJAL7 3SNAL7 3SRAL7 3STAL7 3SXAL7 3SYAL7 3TBAL7 3TDAL7 3TEAL7 3TFAL7 3TGAL7 3THAL7 3TJAL7 3TLAL7 3TNAL7 3TPAL7 3TQAL7 3TRAL7 3TSAL7 3TTAL7 3TUAL7 3TWAL7 3UAAL7 3UBAL7 3UDAL7 3UEAL7 3UHAL7 3UJAL7 3ULAL7 3UNAL7 3UPAL7 3UQAL7 3UUAL7 3UWAL7 3UXAL7 3UZAL7 3XAAL7 3XBAL7 3XDAL7 3XEAL7 3XFAL7 3XGAL7 3XHAL7 3XJAL7 3XLAL7 3XNAL7 3XPAL7 3XW

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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