Use this guide to understand SA1 4NN in Wales. Start with the interactive location and approximate postcode outline, then browse the available facts and local-area indicators. Labels show which figures relate to the exact postcode and which cover a larger geography. Census 2021 records 129 residents and 48 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 | SA1 4NN |
| Postcode without spaces | SA14NN |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1980 |
| Directory version | 2026-06 |
| Latitude | 51.6135100 |
| Longitude | -3.9635570 |
| British National Grid | 264,143 E, 192,347 N |
| Country | Wales |
| Output Area (2021) | W00004634 |
| LSOA (2021) | W01000875 |
| MSOA (2021) | W02000193 |
| Electoral ward | W05001067 |
| Westminster constituency | W07000108 |
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 | 129 |
| Households | 48 |
| Female residents | 71 |
| Male residents | 58 |
| Residents per household | 2.7 |
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 |
|---|---|---|---|---|
| 5 Nov 2025 | 74, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £175,000 |
| 30 Sep 2025 | 89, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £212,000 |
| 20 Aug 2025 | 94, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £162,000 |
| 28 Aug 2024 | 97, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £155,000 |
| 5 Jul 2024 | 79, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £160,000 |
| 3 May 2023 | 74, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £178,000 |
| 5 Sep 2022 | 101, ST HELENS AVENUE, SWANSEA | Flat or maisonette | Leasehold | £136,000 |
| 13 Aug 2022 | 87, ST HELENS AVENUE, SWANSEA | Other | Freehold | £250,000 |
| 28 Jul 2021 | 92, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £166,000 |
| 13 Nov 2020 | 75, ST HELENS AVENUE, SWANSEA | Terraced | Freehold | £145,000 |
Open schools and active GP practices in the SA1 postcode district, ordered by straight-line distance where coordinates are available.
Welsh establishment
Rodney Street, Swansea, SA1 3UA
B
PHILLIPS PARADE, SWANSEA, SA1 4JL
Welsh establishment
Vincent Street, Swansea, SA1 3TY
B
151 ST. HELENS ROAD, SWANSEA, SA1 4DF
B
RUSSELL STREET, SWANSEA, SA1 4HR
Welsh establishment
36 St James's Crescent, Uplands, Swansea, SA1 6DR
B
200 OYSTERMOUTH ROAD, SWANSEA, SA1 3SR
B
NICHOLL ST MEDICAL CENTR, 33 NICHOLL STREET, SWANSEA, SA1 4HF
B
YMCA, 1 THE KINGSWAY, SWANSEA, SA1 5JQ
Welsh establishment
18 Mansel St, Swansea, Swansea (Abertawe), SA1 5SG
Welsh establishment
Terrace Road, Mount Pleasant, Swansea, SA1 6JD
Welsh establishment
Creidiol Road, Mayhill, Swansea, SA1 6TX
Companies House records whose registered-office address uses this exact postcode.
Private Limited Company
Incorporated 15 September 2025
68100 - Buying and selling of own real estate
Community Interest Company
Incorporated 26 January 2024
01300 - Plant propagation
Private Limited Company
Incorporated 5 July 2021
68100 - Buying and selling of own real estate
Private Limited Company
Incorporated 5 July 2012
56290 - Other food services
Private Limited Company
Incorporated 8 September 2011
74909 - Other professional, scientific and technical activities n.e.c.
Private Limited Company
Incorporated 15 November 2001
43220 - Plumbing, heat and air-conditioning installation
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Swansea 026D includes SA1 4NN and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Shoplifting | 4 |
| Public order | 3 |
| Criminal damage and arson | 1 |
| Other theft | 1 |
| Possession of weapons | 1 |
| Robbery | 1 |
| Vehicle crime | 1 |
Answers use the geographic scope stated with each dataset above.
SA1 4NN is in Wales.
The Census 2021 postcode-level dataset records 129 residents at SA1 4NN. This is an exact postcode count.
Yes. The sold-price records shown on this page are Land Registry transactions matched to the full SA1 4NN postcode.
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full SA1 4NN postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.