SA9 postcode district

Postcodes and sectors

554 of the district's 643 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 51.78138, -3.76879, which locates the district, not a building.

Companies registered in SA9

Companies House lists 569 companies with a registered office in SA9; 32 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 SA9

• Wales
• Powys
• Castell-nedd Port Talbot
• Neath Port Talbot
• Ystradgynlais
• Ystalyfera
• Y Gurnos
• Gurnos
• Sir Gaerfyrddin
• Carmarthenshire
• Abercrave
• Abercraf
• Cwmllynfell
• Cwm-twrch Uchaf
• Ynyswen
• Ystradowen
• Cwm-twrch Isaf
• Caehopkin
• Pen-Rhiw-fawr
• Cefn-bryn-brain
• Glan-rhyd
• Gorof
• Pen-y-cae
• Penwyllt

Roads filed under SA9

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.

• Abercrave Terrace
• Ael-y-Bryn
• Alder Avenue
• Alltygrug Farm Road
• Alltygrug Road
• Bethel Road
• Brecon Road
• Bridge Street
• Bron yr Allt
• Brooklands Terrace
• Bryn-y-Grug
• Brynawelon
• Brynawel Road
• Bryneithyn
• Bryn Gorof
• Brynheulog
• Bryn Road
• Caedegar Road
• Caedu Road
• Canal Terrace
• Carreg yr Afon
• Church Road
• Clare Road
• Clees Lane
• Clos Gorof
• Club Lane
• Clyngwyn Road
• Coedffaldau
• Coedlan
• College Row
• Commercial Street
• Cribarth
• Crimea Court
• Croesffyrdd
• Cwmphil Road
• Cwm Tawe Road
• Cwrt y Gamlas
• Cwrt y Gloch
• Cwrt y Gyrlais
• Cyfyng Road
• Darren Road
• Davies Street
• Dderi Road
• Deeley Road
• Derwen Road
• Dolawel
• Dolfain
• Dol y Dderwen
• Felinfach
• Ffordd Danygraig
• Ffordd Emlyn
• Ffordd Glandwr
• Ffordd y Glowyr
• Ffordd yr Afon
• Ger-yr-Afon
• Gilfach Road
• Glan-yr-Ysgol
• Glannant Terrace
• Glanrhyd Road
• Glantawe Park

Check an address in SA9

Check an address in SA9

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SA9" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SA9

What does an SA9 postcode tell you?

That the address lies in the SA9 district of the SA (Swansea) postcode area, and the place OS Open Names most often lists first for its postcodes is Ystradgynlais. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 554 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 SA9

• SA88.6 km
• SA1010.6 km
• SA1111.9 km
• SA1813.3 km
• SA715.4 km
• SA615.8 km
• SA1219.3 km
• SA1319.7 km
• SA520.3 km
• CF3420.6 km
• SA120.9 km
• CF4221.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids