SA4 postcode area guide — Carmarthenshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SA4 postcode district in Carmarthenshire — every official dataset on one page.
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Where is SA4?
Broadband & internet speeds in SA4
Strong coverage
Superfast (30Mb+)
92.5%
Ultrafast (300Mb+)
76.1%
Gigabit-capable
75.8%
Below USO (10Mb)
0.4%
Broadband availability in the SA4 postcode district (Carmarthenshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 1,125 postcodes Ofcom measures in SA4, superfast broadband (30 Mbit/s or faster) reaches 92.5% of premises and gigabit-capable lines are available to 75.8%.
Around 0.4% of premises in SA4 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.
Sample postcodes in SA4
| Postcode | Superfast | Gigabit |
|---|---|---|
| SA4 0AA | 100% | 100% |
| SA4 0AB | 100% | 100% |
| SA4 0AD | 100% | 100% |
| SA4 0FB | 16.7% | 16.7% |
| SA4 0FD | 0% | 0% |
| SA4 0FE | 0% | 0% |
| SA4 0FF | 100% | 100% |
| SA4 0FG | 100% | 100% |
| SA4 0FH | 0% | 0% |
| SA4 0FJ | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Carmarthenshire
Ofcom's coverage model for the wider Carmarthenshire district (95,165 premises):
4G indoors — all networks
80.3%
4G outdoors — all networks
95.7%
5G outdoors — all networks
—
Voice indoors — all networks
83%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in SA4
Police recorded 83 incidents within about a mile of the centre of SA4 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 41 | 49.4% |
| Anti-social behaviour | 7 | 8.4% |
| Public order | 7 | 8.4% |
| Other theft | 6 | 7.2% |
| Criminal damage & arson | 4 | 4.8% |
| Other crime | 4 | 4.8% |
| Burglary | 3 | 3.6% |
| Shoplifting | 3 | 3.6% |
Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).
House prices in SA4
Based on 494 sales registered with HM Land Registry in the last 12 months, the median sold price in SA4 is £209,000, down 5.0% on the previous year (£220,000).
Detached
£310,000
157 sales
Semi-detached
£200,000
192 sales
Terraced
£157,500
101 sales
Flat / maisonette
£106,000
29 sales
Latest recorded sales in SA4
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 19 May 2026 | £130,000 | Terraced | Clos Allt Y Gog | SA4 8JH |
| 18 May 2026 | £270,000 | Detached | Ynys Werdd | SA4 9AR |
| 15 May 2026 | £395,000 | Detached | Cilgant Meredith | SA4 9HS |
| 15 May 2026 | £218,500 | Terraced | Heol Pentre Bach | SA4 4AU |
| 11 May 2026 | £155,000 | Terraced | Cambrian Place | SA4 8RG |
| 8 May 2026 | £210,000 | Terraced | Cherry Crescent | SA4 9FG |
| 5 May 2026 | £249,995 | Semi-detached | Ffordd Y Glowr | SA4 8ED |
| 1 May 2026 | £180,000 | Terraced | Llys Baldwin | SA4 3DX |
| 1 May 2026 | £235,000 | Semi-detached | Pen Y Pwll | SA4 8EH |
| 1 May 2026 | £230,000 | Semi-detached | Nant Glas | SA4 9SW |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Carmarthenshire demographics
Census 2021 figures for the wider Carmarthenshire district (187,897 residents, 81,759 households):
| Age profile | |
|---|---|
| Under 15 | 17.3% |
| 15–29 | 19.9% |
| 30–44 | 16.9% |
| 45–64 | 21.8% |
| 65+ | 24.2% |
| Housing tenure | |
|---|---|
| Owner-occupied | 70.4% |
| Private rented | 15% |
| Social rented | 3.9% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around SA4
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Gowerton School | Not applicable | — | — | SA4 3DL |
| Tre Uchaf Primary School | Not applicable | — | — | SA4 6QB |
| Ysgol Gynradd Gymraeg Pontybrenin | Not applicable | — | — | SA4 6AU |
| Pontybrenin Primary School | Not applicable | — | — | SA4 6HX |
| Penyrheol Comprehensive School | Not applicable | — | — | SA4 4FG |
| Ysgol Gyfun Gwyr | Not applicable | — | — | SA4 3DB |
| Gorseinon Primary | Not applicable | — | — | SA4 4BN |
| Gowerton Primary School | Not applicable | — | — | SA4 3EL |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Food hygiene ratings in SA4
314 rated food businesses operate in SA4. 204 hold the top rating of 5, 58 are rated 4, and 7 are rated 2 or below.
Among the 5-rated: A Taste Of India, Aldi, All Seasons Round, American Candy Store, Arora's Stores.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SA4
From a sample of 224 Energy Performance Certificates across 9 SA4 postcodes, the most common rating is band D (average band C). 49% of sampled homes are rated C or better.
Band B
23%
Band C
25%
Band D
35%
Band E
13%
Band F
3%
Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.
Phone area codes for Carmarthenshire
Landlines around SA4 typically use:
Had a call from an unknown number? Use our free UK phone number checker to see who called.
What's it like living in SA4?
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Moving to SA4? Sort your connectivity first
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Postcodes in SA4
Neighbouring districts
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Frequently asked questions
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Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.