What does a CA18 postcode tell you?

That the address lies in the CA18 district of the CA (Carlisle) postcode area, and the place OS Open Names most often lists first for its postcodes is Ravenglass. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 25 live postcodes.

CA18 postcode district

CA18, in the CA (Carlisle) postcode area, has 25 live and 3 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files 6 roads under it.

postcode area	CA (Carlisle)
live postcodes	25
terminated postcodes	3
sectors	1
roads listed	6
companies registered	21
centroid	54.35432, -3.39110
directory release	2026-08

Postcodes and sectors

25 of the district's 28 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 54.35432, -3.39110, which locates the district, not a building.

sector	live	terminated
CA18 1	25	3

Companies registered in CA18

Companies House lists 21 companies with a registered office in CA18 (1 October 2026 snapshot).

Places OS Open Names lists for CA18

Cumberland
North West
Ravenglass
Broad Oak

Roads filed under CA18

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.

Croftlands Drive
Fell Lane
Main Street
Station Hill
Townfield Close
Walls Drive

Check an address in CA18

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CA18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CA18

What does a CA18 postcode tell you?: That the address lies in the CA18 district of the CA (Carlisle) postcode area, and the place OS Open Names most often lists first for its postcodes is Ravenglass. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 25 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 CA18

CA193.7 km
LA196.5 km
CA207.8 km
CA2113.0 km
LA2013.7 km
CA2216.8 km
LA1817.1 km
LA1718.9 km
CA2319.1 km
CA2720.1 km
LA2120.3 km
CA2420.5 km
Every district
How a British address is written
Check any address

distance between the districts' centroids

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