SA39 postcode area guide — Carmarthenshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SA39 postcode district in Carmarthenshire — every official dataset on one page.
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Where is SA39?
Broadband & internet speeds in SA39
Mixed coverage
Superfast (30Mb+)
67.1%
Ultrafast (300Mb+)
30.1%
Gigabit-capable
30.1%
Below USO (10Mb)
5.4%
Broadband availability in the SA39 postcode district (Carmarthenshire) is Mixed — superfast is available to many but not all premises. Across the 116 postcodes Ofcom measures in SA39, superfast broadband (30 Mbit/s or faster) reaches 67.1% of premises and gigabit-capable lines are available to 30.1%.
Around 5.4% of premises in SA39 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 SA39
| Postcode | Superfast | Gigabit |
|---|---|---|
| SA39 9AA | 100% | 0% |
| SA39 9AB | 100% | 0% |
| SA39 9AD | 100% | 0% |
| SA39 9AE | 66.7% | 66.7% |
| SA39 9AF | 100% | 0% |
| SA39 9AG | 0% | 0% |
| SA39 9AH | 0% | 0% |
| SA39 9AJ | 0% | 0% |
| SA39 9AL | 0% | 0% |
| SA39 9AN | 66.7% | 0% |
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.
House prices in SA39
Based on 22 sales registered with HM Land Registry in the last 12 months, the median sold price in SA39 is £195,000, down 6.3% on the previous year (£208,000).
Detached
£260,000
13 sales
Semi-detached
£132,500
3 sales
Terraced
£105,000
3 sales
Latest recorded sales in SA39
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 30 Mar 2026 | £375,000 | Detached | SA39 9AX | |
| 20 Mar 2026 | £260,000 | Detached | SA39 9AY | |
| 24 Feb 2026 | £330,000 | Detached | SA39 9BX | |
| 6 Feb 2026 | £195,000 | Semi-detached | Bryndulais | SA39 9DT |
| 23 Jan 2026 | £132,000 | Detached | SA39 9JY | |
| 19 Dec 2025 | £222,500 | Other | SA39 9JJ | |
| 18 Dec 2025 | £280,000 | Detached | SA39 9DH | |
| 17 Dec 2025 | £783,750 | Detached | SA39 9EH | |
| 16 Dec 2025 | £260,000 | Detached | SA39 9AX | |
| 12 Dec 2025 | £162,000 | Detached | SA39 9DR |
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 SA39
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol Gynradd Wirfoddol Llanllwni | Not applicable | — | — | SA39 9DX |
| Cae'r Felin Community School | Not applicable | — | — | SA39 9BS |
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 SA39
22 rated food businesses operate in SA39. 18 hold the top rating of 5, 3 are rated 4, and none are currently rated 2 or below.
Among the 5-rated: Blaenwaun Farm B&B, Branney's Fish Bar, C.I.G, Cartref Croeso Ltd - Tremle Residential Care Home, EAGLE INN.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SA39
From a sample of 171 Energy Performance Certificates across 12 SA39 postcodes, the most common rating is band D (average band E). 12% of sampled homes are rated C or better.
Band A
1%
Band B
2%
Band C
9%
Band D
43%
Band E
26%
Band F
15%
Band G
5%
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 SA39 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 SA39?
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Moving to SA39? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Carmarthenshire — free, no-obligation quote.
Postcodes in SA39
Neighbouring districts
All Swansea (SA) postcode districts ›
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.