L21 postcode district

Postcodes and sectors

572 of the district's 728 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 53.47138, -3.00040, which locates the district, not a building.

Companies registered in L21

Companies House lists 876 companies with a registered office in L21; 220 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 L21

• Sefton
• North West
• Litherland
• Crosby
• Bootle

Roads filed under L21

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.

• Adelaide Road
• Akenside Street
• Alexandra Mount
• Alpha Street
• Alton Avenue
• Alwyn Avenue
• Amethyst Close
• Amos Avenue
• Anderson Road
• Anderson Way
• Appleton Road
• Arnside
• Ascot Avenue
• Ashford Close
• Ash Grove
• Ash Road
• Balfe Street
• Barkeley Drive
• Bark Road
• Barton Close
• Beach Road
• Beaconsfield Road
• Bedford Place
• Beech Grove
• Beechwood Road
• Belgrave Road
• Bellini Close
• Bishop Close
• Bleasdale Way
• Blenheim Avenue
• Blisworth Street
• Boundary Road
• Bowden Street
• Bower Grove
• Bowland Drive
• Bradley Road
• Brendon Avenue
• Bridge Croft
• Bridge Road
• Bridgewater Close
• Brindley Close
• Brunel Drive
• Bryant Road
• Caldon Close
• Caledonian Crescent
• Cambridge Avenue
• Captain's Lane
• Caradoc Road
• Carr Croft
• Catherine Street
• Cecil Road
• Chatham Close
• Chelsea Road
• Chesnut Road
• Church Grove
• Church Road
• Claremont Close
• Claremont Road
• Clarendon Road
• Cobb Avenue

Check an address in L21

Check an address in L21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=L21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about L21

What does an L21 postcode tell you?

That the address lies in the L21 district of the L (Liverpool) postcode area, and the place OS Open Names most often lists first for its postcodes is Litherland. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 572 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 L21

• L221.9 km
• L202.2 km
• L302.4 km
• L232.7 km
• L93.3 km
• L294.1 km
• L754.4 km
• L44.5 km
• L104.9 km
• L55.4 km
• CH455.8 km
• L116.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids