SA18 postcode area guide — Carmarthenshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SA18 postcode district in Carmarthenshire — every official dataset on one page.
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Where is SA18?
Broadband & internet speeds in SA18
Strong coverage
Superfast (30Mb+)
87.1%
Ultrafast (300Mb+)
41.3%
Gigabit-capable
41.3%
Below USO (10Mb)
0.4%
Broadband availability in the SA18 postcode district (Carmarthenshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 764 postcodes Ofcom measures in SA18, superfast broadband (30 Mbit/s or faster) reaches 87.1% of premises and gigabit-capable lines are available to 41.3%.
Around 0.4% of premises in SA18 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 SA18
| Postcode | Superfast | Gigabit |
|---|---|---|
| SA18 1AB | 100% | 100% |
| SA18 1AD | 100% | 100% |
| SA18 1AE | 100% | 100% |
| SA18 1AF | 100% | 100% |
| SA18 1AG | 100% | 100% |
| SA18 1AH | 100% | 100% |
| SA18 1AJ | 100% | 0% |
| SA18 1AL | 100% | 100% |
| SA18 1AN | 100% | 100% |
| SA18 1AP | 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 SA18
Police recorded 16 incidents within about a mile of the centre of SA18 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Criminal damage & arson | 3 | 18.8% |
| Other crime | 3 | 18.8% |
| Anti-social behaviour | 2 | 12.5% |
| Public order | 2 | 12.5% |
| Vehicle crime | 2 | 12.5% |
| Violence & sexual offences | 2 | 12.5% |
| Drugs | 1 | 6.3% |
| Other theft | 1 | 6.3% |
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 SA18
Based on 323 sales registered with HM Land Registry in the last 12 months, the median sold price in SA18 is £185,000, up 4.2% on the previous year (£177,500).
Detached
£259,950
131 sales
Semi-detached
£167,000
135 sales
Terraced
£126,000
38 sales
Flat / maisonette
£117,500
3 sales
Latest recorded sales in SA18
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 28 May 2026 | £160,000 | Flat | High Street | SA18 2NB |
| 27 May 2026 | £108,000 | Semi-detached | Llandeilo Road | SA18 1BA |
| 18 May 2026 | £170,000 | Semi-detached | Heol Cae Gurwen | SA18 1PD |
| 14 May 2026 | £180,000 | Semi-detached | Saron Road | SA18 3LH |
| 8 May 2026 | £245,000 | Detached | Derlyn Park | SA18 3QT |
| 8 May 2026 | £345,000 | Detached | Maesquarre Road | SA18 2LB |
| 8 May 2026 | £220,000 | Other | Heol Y Gors | SA18 1RW |
| 7 May 2026 | £362,499 | Detached | New Ceidrim Road | SA18 1LW |
| 1 May 2026 | £220,000 | Detached | Penygroes Road | SA18 3DQ |
| 1 May 2026 | £166,500 | Terraced | Parc Fferws | SA18 3QX |
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 SA18
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol Feithrin Rhydaman | Not applicable | — | — | SA18 2NS |
| Ysgol Gynradd Saron | Not applicable | — | — | SA18 3LH |
| Betws C.P. School | Not applicable | — | — | SA18 2HE |
| Ysgol Gynradd Tycroes | Not applicable | — | — | SA18 3QD |
| Ysgol Gynradd Parcyrhun | Not applicable | — | — | SA18 3HB |
| Ysgol Gynradd Blaenau | Not applicable | — | — | SA18 3BQ |
| Brynaman C P School | Not applicable | — | — | SA18 1AH |
| Ysgol Gymraeg Rhydaman | Not applicable | — | — | SA18 2NS |
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 SA18
236 rated food businesses operate in SA18. 171 hold the top rating of 5, 36 are rated 4, and 3 are rated 2 or below.
Among the 5-rated: A to Z CONVENIENCE STORE, Alzheimer's Society (Ty Perthyn), Ameanah's, AMMAN UNITED RUGBY FOOTBALL CLUB, AMMAN VALLEY HOSPITAL.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SA18
From a sample of 313 Energy Performance Certificates across 11 SA18 postcodes, the most common rating is band C (average band D). 51% of sampled homes are rated C or better.
Band A
11%
Band B
16%
Band C
24%
Band D
22%
Band E
12%
Band F
10%
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 SA18 typically use:
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What's it like living in SA18?
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Moving to SA18? Sort your connectivity first
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Postcodes in SA18
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.