AL postcode area

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Postcode district boundaries:

KML is from Wikidata
St Albans postcode area
AL is located in the United Kingdom
Postcode areaAL
Postcode area nameSt Albans
Post towns5
Postcode districts10
Postcode sectors39
Postcodes (live)7,762
Postcodes (total)11,325
Statistics as at May 2020[1]

The AL postcode area, also known as the St Albans postcode area,[2] is a group of 10 postcode districts in England, within 5 post towns and around 7,762 live postcodes. These cover central Hertfordshire, including St Albans, Harpenden, Welwyn, Welwyn Garden City and Hatfield.

Mail for this area is processed at the Home Counties North Mail Centre in Hemel Hempstead, and is delivered from offices at St Albans (Brick Knoll Park AL1), Harpenden (Station Road AL5), and Hatfield (Town Centre AL10). The area covered includes most of the St Albans and Welwyn Hatfield districts, plus the northeastern part of the Dacorum district and very small parts of the Hertsmere, North Hertfordshire and East Hertfordshire districts.


The approximate coverage of the postcode districts:

Postcode district Post town Coverage Local authority area(s)
AL1 ST ALBANS St Albans St Albans
AL2 ST ALBANS St Albans, Bricket Wood, Colney Street, Frogmore, London Colney, Napsbury, Park Street, Potters Crouch, Chiswell Green St Albans, Hertsmere
AL3 ST ALBANS St Albans, Childwickbury, Flamstead, Gorhambury, Markyate, New Greens, Porters Wood, Redbourn, Sandridge St Albans, Dacorum
AL4 ST ALBANS St Albans, Blackmore End, Colney Heath, London Colney, Jersey Farm, Marshalswick, Oaklands, Sandridge, Smallford, Tyttenhanger, Wheathampstead St Albans, Hertsmere, North Hertfordshire
AL5 HARPENDEN Harpenden, Kinsbourne Green St Albans
AL6 WELWYN Welwyn, Ayot St Peter, Ayot St Lawrence, Digswell, Rabley Heath, Tewin Welwyn Hatfield, East Hertfordshire, North Hertfordshire
AL7 WELWYN GARDEN CITY Welwyn Garden City (east) Welwyn Hatfield
AL8 WELWYN GARDEN CITY Welwyn Garden City (west), Lemsford Welwyn Hatfield
AL9 HATFIELD Hatfield (Old Hatfield), Brookmans Park, Essendon, North Mymms Welwyn Hatfield
AL10 HATFIELD Hatfield (new town) Welwyn Hatfield


KML is from Wikidata
AL postcode area map, showing postcode districts, post towns and neighbouring postcode areas.EN postcode areaHP postcode areaLU postcode areaSG postcode areaWD postcode area
AL postcode area map, showing postcode districts in red and post towns in grey text, with links to nearby EN, HP, LU, SG and WD postcode areas.

See also[edit]


  1. ^ "ONS Postcode Directory Version Notes" (ZIP). National Statistics Postcode Products. Office for National Statistics. May 2020. Table 2. Retrieved 19 June 2020. Coordinates from mean of unit postcode points, "Code-Point Open". OS OpenData. Ordnance Survey. February 2012. Retrieved 21 April 2012.
  2. ^ Royal Mail, Address Management Guide, (2004)

External links[edit]