CA1 postcode district

Postcodes and sectors

674 of the district's 1,034 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 54.88576, -2.91175, which locates the district, not a building.

Companies registered in CA1

Companies House lists 2,021 companies with a registered office in CA1; 392 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 CA1

• Cumberland
• North West
• Carlisle
• Carleton

Roads filed under CA1

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 Street
• Admiral Way
• Aglionby Street
• Agricola Way
• Alanbrooke Road
• Albert Street
• Albion Street
• Alexander Street
• Alexandra Drive
• Alfred Street North
• Alfred Street South
• Allandale Road
• Applewood Close
• Argyll Drive
• Arkwright Way
• Arnside Road
• Ashford Way
• Atkinson Crescent
• Auchinleck Drive
• Axson Drive
• Baird Road
• Banks Lane
• Barley Edge
• Barrock Street
• Barton's Place
• Bedstone Place
• Berlin Street
• Beverley Rise
• Blackburn Drive
• Blake Street
• Blundell Road
• Border Close
• Borland Avenue
• Botcherby Avenue
• Botchergate
• Bowman Street
• Bramerton Orchard
• Brantwood Avenue
• Bridgewater Road
• Brimstone Way
• Broadoaks Court
• Broadoaks Grange
• Broad Street
• Brook Street
• Broome Court
• Brunel Way
• Brunswick Street
• Brunton Avenue
• Brunton Crescent
• Burnett Road
• Carleton Road
• Carliol Close
• Carliol Drive
• Catholic Lane
• Cavaghan Gardens
• Cecil Street
• Central Avenue
• Chalkhill Way
• Chapel Brow
• Chapel Street

Check an address in CA1

Check an address in CA1

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CA1" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CA1

What does a CA1 postcode tell you?

That the address lies in the CA1 district of the CA (Carlisle) postcode area, and the place OS Open Names most often lists first for its postcodes is Carlisle. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 674 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 CA1

• CA22.5 km
• CA33.3 km
• CA46.6 km
• CA57.7 km
• CA611.9 km
• CA815.5 km
• DG1615.9 km
• DG1422.3 km
• CA722.7 km
• DG1224.5 km
• CA1125.9 km
• NE4930.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids