SA3 postcode area guide — Swansea
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SA3 postcode district in Swansea — every official dataset on one page.
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Where is SA3?
Broadband & internet speeds in SA3
Strong coverage
Superfast (30Mb+)
93.2%
Ultrafast (300Mb+)
69.9%
Gigabit-capable
67.5%
Below USO (10Mb)
1.1%
Broadband availability in the SA3 postcode district (Swansea) is Strong — superfast is near-universal and gigabit is rolling out. Across the 716 postcodes Ofcom measures in SA3, superfast broadband (30 Mbit/s or faster) reaches 93.2% of premises and gigabit-capable lines are available to 67.5%.
Around 1.1% of premises in SA3 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 SA3
| Postcode | Superfast | Gigabit |
|---|---|---|
| SA3 1AA | 100% | 8.1% |
| SA3 1AB | 100% | 0% |
| SA3 1AD | 100% | 2.5% |
| SA3 1AE | 100% | 25.7% |
| SA3 1AF | 100% | 12.5% |
| SA3 1AG | 100% | 0% |
| SA3 1AH | 100% | 0% |
| SA3 1AJ | 0% | 0% |
| SA3 1AL | 0% | 0% |
| SA3 1AN | 0% | 0% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Swansea
Ofcom's coverage model for the wider Swansea district (120,330 premises):
4G indoors — all networks
86.1%
4G outdoors — all networks
99.2%
5G outdoors — all networks
20%
Voice indoors — all networks
90%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in SA3
Police recorded 10 incidents within about a mile of the centre of SA3 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 8 | 80.0% |
| Criminal damage & arson | 1 | 10.0% |
| Shoplifting | 1 | 10.0% |
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 SA3
Based on 295 sales registered with HM Land Registry in the last 12 months, the median sold price in SA3 is £350,000, down 2.8% on the previous year (£360,000).
Detached
£475,000
122 sales
Semi-detached
£325,000
67 sales
Terraced
£268,000
58 sales
Flat / maisonette
£205,000
37 sales
Latest recorded sales in SA3
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 19 May 2026 | £115,000 | Flat | Ilston Way | SA3 5LG |
| 15 May 2026 | £390,000 | Detached | Millands Close | SA3 4SE |
| 8 May 2026 | £330,000 | Semi-detached | Sweet Briar Lane | SA3 5JJ |
| 8 May 2026 | £95,000 | Flat | SA3 3JB | |
| 1 May 2026 | £330,000 | Semi-detached | Dunns Close | SA3 4AF |
| 1 May 2026 | £360,000 | Detached | SA3 1HA | |
| 30 Apr 2026 | £350,000 | Detached | SA3 1HA | |
| 23 Apr 2026 | £220,000 | Terraced | Gower Place | SA3 4AB |
| 22 Apr 2026 | £402,000 | Semi-detached | Eastlands Park | SA3 3DG |
| 22 Apr 2026 | £480,000 | Detached | St Andrews Close | SA3 5DX |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Swansea demographics
Census 2021 figures for the wider Swansea district (238,489 residents, 104,962 households):
| Age profile | |
|---|---|
| Under 15 | 17% |
| 15–29 | 25.3% |
| 30–44 | 17.8% |
| 45–64 | 19.4% |
| 65+ | 20.5% |
| Housing tenure | |
|---|---|
| Owner-occupied | 62.3% |
| Private rented | 18.3% |
| Social rented | 7.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around SA3
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Grange Primary School | Not applicable | — | — | SA3 5TS |
| Oystermouth Primary School | Not applicable | — | — | SA3 4BE |
| Mayals Primary School | Not applicable | — | — | SA3 5JP |
| Newton Primary School | Not applicable | — | — | SA3 4UE |
| Whitestone Primary School | Not applicable | — | — | SA3 5RF |
| Bishopston Primary School | Not applicable | — | — | SA3 3EN |
| Llanrhidian Primary School | Not applicable | — | — | SA3 1EH |
| Pennard Primary School | Not applicable | — | — | SA3 2AD |
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 SA3
261 rated food businesses operate in SA3. 170 hold the top rating of 5, 44 are rated 4, and 4 are rated 2 or below.
Among the 5-rated: @ Cwm Ivy Cafe, A Taste of Times Past, After School Club Llanrhidian Primary School, After School Club Oystermouth Primary Schoo, Bank Farm Village Shop.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SA3
From a sample of 185 Energy Performance Certificates across 11 SA3 postcodes, the most common rating is band D (average band D). 34% of sampled homes are rated C or better.
Band A
2%
Band B
6%
Band C
25%
Band D
29%
Band E
24%
Band F
10%
Band G
4%
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 Swansea
Landlines around SA3 typically use:
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What's it like living in SA3?
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Moving to SA3? Sort your connectivity first
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Postcodes in SA3
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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.