SA18 postcode district: Ammanford and around
SA18 is a postcode district in Wales, with 772 postcodes in use in 4 sectors. It has postcodes in Ammanford, Glanaman, Gwaun-Cae-Gurwen and 3 more places. It is split between 3 councils: Carmarthenshire (653 postcodes), Neath Port Talbot (103) and Swansea (16).
- Postcodes in use
- 772
- Sectors
- 4
- Councils
- 3 councils
- Places
- 6 places
Source: ONS Postcode Directory, August 2026, loaded 20 October 2026.
Every postcode in SA18, by gigabit broadband
- No home or business can get gigabit: 175
- Some can get gigabit: 157
- Every home and business can get gigabit: 430
- Ofcom gives no figure: 10
- Outline: where 5 or more postcodes without gigabit lie together
Of the 772 postcodes in SA18 that ONS places, 175 have no home or business that can get gigabit, 157 have some that can, 430 can all get it and 10 have no Ofcom figure.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 240 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 51.7978, longitude -3.9609. Open this area on OpenStreetMap
Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre.
Postcodes without gigabit
175 postcodes here have no gigabit. These are the 12 first in postcode order.
Where the postcodes without gigabit lie together
What broadband can you get in SA18?
Ofcom reports on 762 of the 772 postcodes in SA18. At 430 of them every home and business can get gigabit broadband, and at 10 some cannot get decent broadband (10 Mbit/s).
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom Connected Nations, Connected Nations, Spring 2026, data for January 2026.
What do homes sell for in SA18?
Homes in SA18 sold for a typical £195,000 in the 12 months to September 2026, across 328 sales, HM Land Registry's figures show. The 12 months before gave £180,000 from 342 sales: not a change larger than chance would explain, given which homes happened to sell.
- Detached £262,500 139 sales
- Semi-detached £180,000 144 sales
- Terraced £137,750 42 sales
- Flat or maisonette 3 sales, too few to price
Each bar is that kind's typical price, against the most expensive kind here.
Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.
Source: HM Land Registry Price Paid Data, files dated 28 October 2026.
Postcodes in SA18
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in SA18
Towns and villages with postcodes in SA18, and how many each has here.
Who covers SA18
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
What council am I in?Constituencies
- Caerfyrddin605
- Brecon, Radnor and Cwm Tawe103
- Llanelli48
- Gower16
Police force areas
- Dyfed-Powys653
- South Wales119
Next to SA18
"Next to" is by number: the districts before and after SA18 in the SA area.
Check a postcode
Where the facts on this page come from
- Office for National Statistics: ONS Postcode Directory
- Ofcom Connected Nations
- HM Land Registry Price Paid Data
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.
Licence: Open Government Licence v3.0.
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