Explore SA3 4BY in Wales through its map and available local datasets. The outline is an approximate boundary derived from address locations, while the information below distinguishes full-postcode records from statistics covering surrounding official areas. Census 2021 records 28 residents and 16 households at the exact postcode.
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Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | SA3 4BY |
| Postcode without spaces | SA34BY |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1980 |
| Directory version | 2026-06 |
| Latitude | 51.5781100 |
| Longitude | -3.9996290 |
| British National Grid | 261,538 E, 188,477 N |
| Country | Wales |
| Output Area (2021) | W00004418 |
| LSOA (2021) | W01000825 |
| MSOA (2021) | W02000198 |
| Electoral ward | W05001056 |
| Westminster constituency | W07000097 |
The postcode is assigned to these official political geographies. Names and election results will be added when the ElectionMaps datasets are connected.
These Census figures are matched directly to the full postcode, rather than inferred from a wider neighbourhood.
| Residents | 28 |
| Households | 16 |
| Female residents | 17 |
| Male residents | 11 |
| Residents per household | 1.8 |
A detailed vector map covering a 500 metre radius around the postcode.
Land Registry Price Paid Data transactions matched to this exact full postcode.
| Sale date | Address | Property type | Tenure | Price |
|---|---|---|---|---|
| 17 Sep 2025 | 444, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £480,000 |
| 27 Aug 2025 | 456, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £240,000 |
| 20 Jun 2023 | 432, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £185,000 |
| 24 Nov 2021 | 444, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £455,000 |
| 30 Jun 2021 | 450, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £410,000 |
| 8 Apr 2021 | 438, MUMBLES ROAD, MUMBLES, SWANSEA | Detached | Freehold | £480,000 |
| 12 Mar 2021 | 426, MUMBLES ROAD, MUMBLES, SWANSEA | Terraced | Freehold | £330,000 |
Open schools and active GP practices in the SA3 postcode district, ordered by straight-line distance where coordinates are available.
Welsh establishment
Newton Road, Mumbles, Swansea, SA3 4BE
B
10 WEST CROSS AVENUE, WEST CROSS, SWANSEA, SA3 5UA
B
2-6 KINGS ROAD, MUMBLES, SWANSEA, SA3 4AJ
B
2-6 KINGS ROAD, MUMBLES, SWANSEA, SA3 4AJ
Welsh establishment
West Cross Avenue, West Cross, Swansea, SA3 5TS
Welsh establishment
West Cross Avenue, West Cross, Swansea, SA3 5TS
Welsh establishment
West Cross Lane, West Cross, Swansea, SA3 5LS
Welsh establishment
Slade Road, Newton, Swansea, SA3 4UE
Welsh establishment
Off Rushwind Close, West Cross, Swansea, SA3 5RF
Welsh establishment
Huntington Close, Swansea, SA3 5AL
Welsh establishment
Fairwood Road, West Cross, Swansea, SA3 5JP
Welsh establishment
The Glebe, Bishopston, Swansea, SA3 3JP
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Swansea 031C includes SA3 4BY and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Public order | 3 |
| Anti-social behaviour | 2 |
| Violence and sexual offences | 1 |
Answers use the geographic scope stated with each dataset above.
SA3 4BY is in Wales.
The Census 2021 postcode-level dataset records 28 residents at SA3 4BY. This is an exact postcode count.
Yes. The sold-price records shown on this page are Land Registry transactions matched to the full SA3 4BY postcode.
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Explore other full postcodes in the same postcode sector.