| Postcode | SA18 1SN | 
|---|---|
| Post Town | Ammanford | 
| Nearest station | Ammanford (9 km) | 
| Bus stops | Fair Ground (N) Cinema (S) Cinema (N) Brynamman Square (W) Brynamman Square (E) Quarry Road (SE) | 
| Roads in this postcode | |
| Number of UPRNs | 12 View | 
| Known addresses | Castell Farm, Lower Brynamman Cwmamman House, Lower Brynamman Oak Villa, Lower Brynamman Quality Forge, Lower Brynamman 3 Amman Bungalows, Lower Brynamman | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.808646 | |
|---|---|---|
| Longitude | -3.866204 | |
| Easting | 271437 | |
| Northing | 213871 | |
| Grid reference | SN714138 | |
| UTM reference | 30U 440281 5740110 | |
| what3words | contexts.blemishes.monument | |
| FixPhrase | crisped lunar scorn unrented | |
| Plus code | 9C3RR45M+FG | |
| Altitude | 166 metres (545 feet) | |
| Sunrise (today) | 7:09 | |
| Sunset (today) | 16:51 | |
| Distance away | ||
| Distance to sea | 17.4 KMs (10.8 miles) | 
| Parish | Gwaun-Cae-Gurwen | W04000615 | 
|---|---|---|
| Ward | Gwaun-Cae-Gurwen and Lower Brynamman | W05001700 | 
| Unitary Authority | Neath Port Talbot | W06000012 | 
| County | West Glamorgan | W11000008 | 
| Constituency (2024) | Brecon, Radnor and Cwm Tawe | W07000085 | 
| MP | David Chadwick | Liberal Democrat | 
| Police force | South Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Neath Port Talbot | |
| NUTS/ITL 2 | Mid and South West Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 14 | |
|---|---|---|
| Households (2011) | 6 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Smaller rural: Further from a major town or city | |
| Rural/urban (2011) | Rural hamlet and isolated dwellings | |
| Built up area (2024) | Brynamman | W45000953 | 
| Census output area (2021) | W00004955 | |
| Census output area (2011) | 1B2 | |
| Lower layer super output area (2021) | Neath Port Talbot 020E | W01000931 | 
| Lower layer super output area (2011) | Neath Port Talbot 020E | W01000931 | 
| Middle layer super output area (2021) | Ystalyfera & Gwaun-Cae-Gurwen | W02000417 | 
| Middle layer super output area (2011) | Ystalyfera & Gwaun-Cae-Gurwen | W02000417 | 
| Travel to work area | Llanelli | W22000028 | 
| Average property price in Swansea | £199,131 | 
|---|---|
| Annual change | 2.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Quality Forge, Lower Brynamman | Other (freehold) | Jul 2021 | £250,000 | 
| 3 Amman Bungalows, Lower Brynamman | Terraced (freehold) | Oct 2019 | £75,000 | 
| Cwmamman House, Lower Brynamman | Detached (freehold) | Sep 2019 | £249,000 | 
| Detached (freehold) | Dec 2004 | £228,000 | |
| Detached (freehold) | Jul 2000 | £42,000 | |
| Oak Villa, Lower Brynamman | Detached (freehold) | Sep 2006 | £155,000 | 
| Detached (freehold) | Jul 1997 | £47,500 | |
| Castell Farm, Lower Brynamman | Detached (freehold) | Jul 2000 | £80,000 | 
| Detached (freehold) | Jan 1997 | £39,000 |