AL1 postcode district

Postcodes and sectors

1,217 of the district's 2,030 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.74892, -0.32380, which locates the district, not a building.

Companies registered in AL1

Companies House lists 5,183 companies with a registered office in AL1; 1,922 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for AL1

• St. Albans
• Hertfordshire
• Eastern
• St Albans
• London Colney

Roads filed under AL1

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abbey View
• Abbots Avenue
• Abbots Avenue West
• Abbots Park
• Admirals Walk
• Alban Mews
• Alban Way
• Albeny Gate
• Albert Street
• Albion Road
• Aldwick
• Alexandra Road
• Alma Cut
• Alma Road
• Althorp Road
• Anson Close
• Approach Road
• Archers Fields
• Arthur Road
• Art School Yard
• Ashbourne Court
• Ashby Gardens
• Ashdales
• Ashley Road
• Ashtree Court
• Ashwood Mews
• Aspasia Close
• Avenue Road
• Bakers Close
• Bardwell Road
• Barncroft Way
• Battlefield Road
• Beaconsfield Road
• Beaumont Avenue
• Bedford Park Road
• Bedford Road
• Beechwood Avenue
• Belmont Hill
• Benbow Close
• Beresford Road
• Berkeley Mews
• Berners Drive
• Birklands Lane
• Birklands Park
• Black Cut
• Blake Close
• Blandford Road
• Blenheim Road
• Boleyn Drive
• Boundary Road
• Bowgate
• Bowgate Mews
• Brampton Road
• Breakspear Avenue
• Bricket Road
• Brick Knoll Park
• Brooklands Court
• Burleigh Road
• Burnham Road
• Burnside

Check an address in AL1

Check an address in AL1

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=AL1" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about AL1

What does an AL1 postcode tell you?

That the address lies in the AL1 district of the AL (St Albans) postcode area, and the place OS Open Names most often lists first for its postcodes is St Albans. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,217 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest AL1

• AL43.4 km
• AL23.4 km
• AL35.1 km
• AL106.4 km
• WD76.9 km
• AL57.7 km
• WD58.1 km
• WD258.2 km
• AL98.7 km
• HP29.0 km
• WD249.8 km
• AL89.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids