SA20 postcode area guide — Carmarthenshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SA20 postcode district in Carmarthenshire — every official dataset on one page.
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Where is SA20?
Broadband & internet speeds in SA20
Strong coverage
Superfast (30Mb+)
60%
Ultrafast (300Mb+)
52.4%
Gigabit-capable
52.4%
Below USO (10Mb)
9.1%
Broadband availability in the SA20 postcode district (Carmarthenshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 239 postcodes Ofcom measures in SA20, superfast broadband (30 Mbit/s or faster) reaches 60% of premises and gigabit-capable lines are available to 52.4%.
Around 9.1% of premises in SA20 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 SA20
| Postcode | Superfast | Gigabit |
|---|---|---|
| SA20 0AA | 100% | 61.5% |
| SA20 0AB | 100% | 76.9% |
| SA20 0AG | 100% | 100% |
| SA20 0AJ | 0% | 0% |
| SA20 0AL | 100% | 100% |
| SA20 0AN | 100% | 0% |
| SA20 0AP | 100% | 50% |
| SA20 0AQ | 0% | 0% |
| SA20 0AR | 100% | 58.1% |
| SA20 0AS | 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.
House prices in SA20
Based on 40 sales registered with HM Land Registry in the last 12 months, the median sold price in SA20 is £240,000, up 9.1% on the previous year (£220,000).
Detached
£300,000
17 sales
Semi-detached
£240,000
7 sales
Terraced
£157,000
10 sales
Latest recorded sales in SA20
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 14 May 2026 | £275,000 | Detached | New Road | SA20 0EA |
| 1 May 2026 | £112,000 | Terraced | Victoria Street | SA20 0YD |
| 14 Apr 2026 | £265,000 | Detached | SA20 0EP | |
| 30 Mar 2026 | £224,995 | Detached | SA20 0ST | |
| 11 Mar 2026 | £130,000 | Other | SA20 0NX | |
| 23 Feb 2026 | £157,000 | Terraced | New Road | SA20 0EA |
| 20 Feb 2026 | £135,000 | Terraced | High Street | SA20 0PU |
| 16 Feb 2026 | £108,500 | Terraced | College View | SA20 0BD |
| 13 Feb 2026 | £345,000 | Detached | Cilycwm Road | SA20 0DU |
| 13 Feb 2026 | £125,000 | Semi-detached | Church Bank | SA20 0BA |
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 SA20
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol Rhys Prichard | Not applicable | — | — | SA20 0HY |
| Coleg Llanymddyfri | Not applicable | — | — | SA20 0EE |
| Coleg Elidyr | Not applicable | 18–30 | — | SA20 0NL |
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 SA20
47 rated food businesses operate in SA20. 41 hold the top rating of 5, 3 are rated 4, and none are currently rated 2 or below.
Among the 5-rated: BLAENOS CARE HOME, Bryngaer Goats, CAFE TUDOR, CAMPING & CARAVAN CLUB, Cariad a Cwtch Nursery.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SA20
From a sample of 101 Energy Performance Certificates across 10 SA20 postcodes, the most common rating is band D (average band D). 31% of sampled homes are rated C or better.
Band A
1%
Band B
1%
Band C
29%
Band D
39%
Band E
19%
Band F
7%
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 SA20 typically use:
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What's it like living in SA20?
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Moving to SA20? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Carmarthenshire — free, no-obligation quote.
Postcodes in SA20
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.