AL7 1 postcode sector in the AL7 district

AL7 1 is a sector of the AL7 district: every postcode that starts AL7 1. It has 216 postcodes in use, 16 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 1 sector, by flood risk

Map of every postcode in the AL7 1 sector, by flood risk Of the 216 postcodes in the AL7 1 sector that ONS places, 216 are not on the Environment Agency's at-risk list. Places named: Welwyn Garden City. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. AL7 1AA: not on the flood risk listAL7 1AD: not on the flood risk listAL7 1AH: not on the flood risk listAL7 1AJ: not on the flood risk listAL7 1AN: not on the flood risk listAL7 1AP: not on the flood risk listAL7 1AU: not on the flood risk listAL7 1AX: not on the flood risk listAL7 1AY: not on the flood risk listAL7 1BA: not on the flood risk listAL7 1BD: not on the flood risk listAL7 1BH: not on the flood risk listAL7 1BJ: not on the flood risk listAL7 1BQ: not on the flood risk listAL7 1BW: not on the flood risk listAL7 1BX: not on the flood risk listAL7 1BY: not on the flood risk listAL7 1DA: not on the flood risk listAL7 1DB: not on the flood risk listAL7 1DD: not on the flood risk listAL7 1DE: not on the flood risk listAL7 1DG: not on the flood risk listAL7 1DH: not on the flood risk listAL7 1DJ: not on the flood risk listAL7 1DL: not on the flood risk listAL7 1DN: not on the flood risk listAL7 1DP: not on the flood risk listAL7 1DQ: not on the flood risk listAL7 1DR: not on the flood risk listAL7 1DS: not on the flood risk listAL7 1DU: not on the flood risk listAL7 1DW: not on the flood risk listAL7 1DX: not on the flood risk listAL7 1DZ: not on the flood risk listAL7 1EA: not on the flood risk listAL7 1EB: not on the flood risk listAL7 1ED: not on the flood risk listAL7 1EE: not on the flood risk listAL7 1EF: not on the flood risk listAL7 1EG: not on the flood risk listAL7 1EL: not on the flood risk listAL7 1EN: not on the flood risk listAL7 1EP: not on the flood risk listAL7 1EQ: not on the flood risk listAL7 1EU: not on the flood risk listAL7 1EW: not on the flood risk listAL7 1FE: not on the flood risk listAL7 1FF: not on the flood risk listAL7 1FG: not on the flood risk listAL7 1FH: not on the flood risk listAL7 1FJ: not on the flood risk listAL7 1FL: not on the flood risk listAL7 1FN: not on the flood risk listAL7 1FP: not on the flood risk listAL7 1FQ: not on the flood risk listAL7 1FR: not on the flood risk listAL7 1FS: not on the flood risk listAL7 1FT: not on the flood risk listAL7 1FU: not on the flood risk listAL7 1FW: not on the flood risk listAL7 1FX: not on the flood risk listAL7 1FY: not on the flood risk listAL7 1FZ: not on the flood risk listAL7 1GA: not on the flood risk listAL7 1GB: not on the flood risk listAL7 1GD: not on the flood risk listAL7 1GE: not on the flood risk listAL7 1GF: not on the flood risk listAL7 1GG: not on the flood risk listAL7 1GH: not on the flood risk listAL7 1GJ: not on the flood risk listAL7 1GP: not on the flood risk listAL7 1GQ: not on the flood risk listAL7 1GR: not on the flood risk listAL7 1GS: not on the flood risk listAL7 1GT: not on the flood risk listAL7 1GU: not on the flood risk listAL7 1GW: not on the flood risk listAL7 1GX: not on the flood risk listAL7 1GY: not on the flood risk listAL7 1GZ: not on the flood risk listAL7 1HA: not on the flood risk listAL7 1HB: not on the flood risk listAL7 1HE: not on the flood risk listAL7 1HG: not on the flood risk listAL7 1HH: not on the flood risk listAL7 1HJ: not on the flood risk listAL7 1HL: not on the flood risk listAL7 1HN: not on the flood risk listAL7 1HQ: not on the flood risk listAL7 1HR: not on the flood risk listAL7 1HU: not on the flood risk listAL7 1HX: not on the flood risk listAL7 1JA: not on the flood risk listAL7 1JD: not on the flood risk listAL7 1JE: not on the flood risk listAL7 1JG: not on the flood risk listAL7 1JN: not on the flood risk listAL7 1JQ: not on the flood risk listAL7 1JR: not on the flood risk listAL7 1JU: not on the flood risk listAL7 1JY: not on the flood risk listAL7 1LA: not on the flood risk listAL7 1LE: not on the flood risk listAL7 1LP: not on the flood risk listAL7 1LT: not on the flood risk listAL7 1LY: not on the flood risk listAL7 1NA: not on the flood risk listAL7 1NB: not on the flood risk listAL7 1ND: not on the flood risk listAL7 1NE: not on the flood risk listAL7 1NF: not on the flood risk listAL7 1NG: not on the flood risk listAL7 1NH: not on the flood risk listAL7 1NJ: not on the flood risk listAL7 1NL: not on the flood risk listAL7 1NN: not on the flood risk listAL7 1NP: not on the flood risk listAL7 1NQ: not on the flood risk listAL7 1NR: not on the flood risk listAL7 1NS: not on the flood risk listAL7 1NT: not on the flood risk listAL7 1NU: not on the flood risk listAL7 1NW: not on the flood risk listAL7 1NX: not on the flood risk listAL7 1NY: not on the flood risk listAL7 1NZ: not on the flood risk listAL7 1PA: not on the flood risk listAL7 1PB: not on the flood risk listAL7 1PD: not on the flood risk listAL7 1PE: not on the flood risk listAL7 1PF: not on the flood risk listAL7 1PG: not on the flood risk listAL7 1PH: not on the flood risk listAL7 1PJ: not on the flood risk listAL7 1PL: not on the flood risk listAL7 1PN: not on the flood risk listAL7 1PP: not on the flood risk listAL7 1PQ: not on the flood risk listAL7 1PR: not on the flood risk listAL7 1PS: not on the flood risk listAL7 1PW: not on the flood risk listAL7 1PZ: not on the flood risk listAL7 1QA: not on the flood risk listAL7 1QD: not on the flood risk listAL7 1QE: not on the flood risk listAL7 1QF: not on the flood risk listAL7 1QG: not on the flood risk listAL7 1QH: not on the flood risk listAL7 1QJ: not on the flood risk listAL7 1QL: not on the flood risk listAL7 1QN: not on the flood risk listAL7 1QP: not on the flood risk listAL7 1QQ: not on the flood risk listAL7 1QR: not on the flood risk listAL7 1QS: not on the flood risk listAL7 1QT: not on the flood risk listAL7 1QU: not on the flood risk listAL7 1QW: not on the flood risk listAL7 1QX: not on the flood risk listAL7 1QY: not on the flood risk listAL7 1QZ: not on the flood risk listAL7 1RB: not on the flood risk listAL7 1RD: not on the flood risk listAL7 1RE: not on the flood risk listAL7 1RF: not on the flood risk listAL7 1RG: not on the flood risk listAL7 1RH: not on the flood risk listAL7 1RJ: not on the flood risk listAL7 1RL: not on the flood risk listAL7 1RN: not on the flood risk listAL7 1RP: not on the flood risk listAL7 1RQ: not on the flood risk listAL7 1RW: not on the flood risk listAL7 1RX: not on the flood risk listAL7 1RY: not on the flood risk listAL7 1SA: not on the flood risk listAL7 1SB: not on the flood risk listAL7 1SD: not on the flood risk listAL7 1SE: not on the flood risk listAL7 1SF: not on the flood risk listAL7 1TA: not on the flood risk listAL7 1TN: not on the flood risk listAL7 1TP: not on the flood risk listAL7 1TR: not on the flood risk listAL7 1TS: not on the flood risk listAL7 1TW: not on the flood risk listAL7 1UA: not on the flood risk listAL7 1UB: not on the flood risk listAL7 1UD: not on the flood risk listAL7 1UE: not on the flood risk listAL7 1UF: not on the flood risk listAL7 1UG: not on the flood risk listAL7 1UH: not on the flood risk listAL7 1UJ: not on the flood risk listAL7 1UL: not on the flood risk listAL7 1UN: not on the flood risk listAL7 1UP: not on the flood risk listAL7 1UQ: not on the flood risk listAL7 1UW: not on the flood risk listAL7 1WH: not on the flood risk listAL7 1WL: not on the flood risk listAL7 1WN: not on the flood risk listAL7 1WP: not on the flood risk listAL7 1WQ: not on the flood risk listAL7 1WS: not on the flood risk listAL7 1WT: not on the flood risk listAL7 1WU: not on the flood risk listAL7 1WW: not on the flood risk listAL7 1WX: not on the flood risk list Welwyn Garden City Map of every postcode in the AL7 1 sector, by flood risk Of the 216 postcodes in the AL7 1 sector that ONS places, 216 are not on the Environment Agency's at-risk list. 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
  • 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: 216

Of the 216 postcodes in the AL7 1 sector that ONS places, 216 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 AL7 1?

Homes in AL7 1 sold for a typical £380,000 in the 12 months to August 2026, across 79 sales, up 4.1% on the 12 months before, HM Land Registry's figures show.

£380,000 typical price, the 12 months to August 2026
£365,000 12 months to August 2025
▲ up 4.1% on the 12 months before
  • Detached £550,000 7 sales
  • Semi-detached £490,000 11 sales
  • Terraced £415,000 27 sales
  • Flat or maisonette £215,000 34 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 1. 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 1

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 1AAAL7 1ABAL7 1ADAL7 1AHAL7 1AJAL7 1ANAL7 1APAL7 1AUAL7 1AXAL7 1AYAL7 1BAAL7 1BDAL7 1BHAL7 1BJAL7 1BQAL7 1BWAL7 1BXAL7 1BYAL7 1DAAL7 1DBAL7 1DDAL7 1DEAL7 1DGAL7 1DHAL7 1DJAL7 1DLAL7 1DNAL7 1DPAL7 1DQAL7 1DRAL7 1DSAL7 1DUAL7 1DWAL7 1DXAL7 1DZAL7 1EAAL7 1EBAL7 1EDAL7 1EEAL7 1EFAL7 1EGAL7 1ELAL7 1ENAL7 1EPAL7 1EQAL7 1EUAL7 1EWAL7 1FEAL7 1FFAL7 1FGAL7 1FHAL7 1FJAL7 1FLAL7 1FNAL7 1FPAL7 1FQAL7 1FRAL7 1FSAL7 1FTAL7 1FUAL7 1FWAL7 1FXAL7 1FYAL7 1FZAL7 1GAAL7 1GBAL7 1GDAL7 1GEAL7 1GFAL7 1GGAL7 1GHAL7 1GJAL7 1GPAL7 1GQAL7 1GRAL7 1GSAL7 1GTAL7 1GUAL7 1GWAL7 1GXAL7 1GYAL7 1GZAL7 1HAAL7 1HBAL7 1HEAL7 1HGAL7 1HHAL7 1HJAL7 1HLAL7 1HNAL7 1HQAL7 1HRAL7 1HTAL7 1HUAL7 1HWAL7 1HXAL7 1JAAL7 1JDAL7 1JEAL7 1JGAL7 1JNAL7 1JQAL7 1JRAL7 1JUAL7 1JYAL7 1LAAL7 1LEAL7 1LPAL7 1LTAL7 1LYAL7 1NAAL7 1NBAL7 1NDAL7 1NEAL7 1NFAL7 1NGAL7 1NHAL7 1NJAL7 1NLAL7 1NNAL7 1NPAL7 1NQAL7 1NRAL7 1NSAL7 1NTAL7 1NUAL7 1NWAL7 1NXAL7 1NYAL7 1NZAL7 1PAAL7 1PBAL7 1PDAL7 1PEAL7 1PFAL7 1PGAL7 1PHAL7 1PJAL7 1PLAL7 1PNAL7 1PPAL7 1PQAL7 1PRAL7 1PSAL7 1PWAL7 1PZAL7 1QAAL7 1QDAL7 1QEAL7 1QFAL7 1QGAL7 1QHAL7 1QJAL7 1QLAL7 1QNAL7 1QPAL7 1QQAL7 1QRAL7 1QSAL7 1QTAL7 1QUAL7 1QWAL7 1QXAL7 1QYAL7 1QZAL7 1RBAL7 1RDAL7 1REAL7 1RFAL7 1RGAL7 1RHAL7 1RJAL7 1RLAL7 1RNAL7 1RPAL7 1RQAL7 1RWAL7 1RXAL7 1RYAL7 1SAAL7 1SBAL7 1SDAL7 1SEAL7 1SFAL7 1SQAL7 1SYAL7 1TAAL7 1TNAL7 1TPAL7 1TRAL7 1TSAL7 1TWAL7 1UAAL7 1UBAL7 1UDAL7 1UEAL7 1UFAL7 1UGAL7 1UHAL7 1UJAL7 1ULAL7 1UNAL7 1UPAL7 1UQAL7 1UWAL7 1WHAL7 1WLAL7 1WNAL7 1WPAL7 1WQAL7 1WSAL7 1WTAL7 1WUAL7 1WWAL7 1WXAL7 1XN

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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