SA12 postcode district

Postcodes and sectors

788 of the district's 899 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 51.60821, -3.79583, which locates the district, not a building.

Companies registered in SA12

Companies House lists 1,011 companies with a registered office in SA12; 72 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 SA12

• Castell-nedd Port Talbot
• Neath Port Talbot
• Wales
• Port Talbot
• Cwmavon
• Cwmafan
• Baglan
• Pontrhydyfen
• Tonmawr
• Efail Fach
• Cwm

Roads filed under SA12

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.

• Abbeyville Avenue
• Abbeyville Court
• Abbottsmoor
• Aberavon Promenade
• Aberavon Road
• Abergwernffrwd Row
• Acacia Avenue
• Acacia Close
• Acorn Place
• Adare Street
• Addison Place
• Addison Road
• Afandale
• Afan Valley Road
• Afan Way
• Albion Road
• Albion Road Approach
• Aldergrove Close
• Alexandra Street
• Alfred Street
• All Saints Place
• Alpha Place
• Amber Close
• Aneddfan
• Angel Street
• Aqueduct Terrace
• Arthur Street
• Ascot Drive
• Ashgrove
• Aster View
• Attlee Avenue
• Auburn Avenue
• Bach Road
• Baglan Heights
• Baglan Way
• Bailey Street
• Bay View Close
• Beach Street
• Berrylands
• Bevan Street
• Bevin Avenue
• Birch Road
• Birchwood Close
• Blaenavon Terrace
• Blair Way
• Blodwen Street
• Border Road
• Borough Street
• Brahms Avenue
• Bramblewood Close
• Briar Road
• Brooklyn Gardens
• Brookside Close
• Brookway Close
• Brwyna Avenue
• Brynbryddan
• Bryn Gardens
• Brynglas Avenue
• Brynna Road
• Burke Avenue

Check an address in SA12

Check an address in SA12

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SA12" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SA12

What does an SA12 postcode tell you?

That the address lies in the SA12 district of the SA (Swansea) postcode area, and the place OS Open Names most often lists first for its postcodes is Port Talbot. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 788 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 SA12

• SA134.9 km
• SA117.8 km
• SA108.9 km
• SA78.9 km
• CF349.9 km
• SA110.2 km
• SA611.6 km
• CF3311.6 km
• SA512.9 km
• SA813.1 km
• SA214.0 km
• CF3615.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids