Use this guide to understand BT4 3LJ in Northern Ireland. 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.
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Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | BT4 3LJ |
| Postcode without spaces | BT43LJ |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | December 1984 |
| Directory version | 2026-06 |
| Latitude | 54.5943000 |
| Longitude | -5.8517130 |
| British National Grid | 338,904 E, 373,906 N |
| Country | Northern Ireland |
| Output Area (2021) | N20000982 |
| LSOA (2021) | N21000224 |
| MSOA (2021) | N99999999 |
| Electoral ward | N08000351 |
| Westminster constituency | N05000001 |
The postcode is assigned to these official political geographies. Names and election results will be added when the ElectionMaps datasets are connected.
A detailed vector map covering a 500 metre radius around the postcode.
Companies House records whose registered-office address uses this exact postcode.
Private Limited Company
Incorporated 24 September 2025
56103 - Take-away food shops and mobile food stands
Private Limited Company
Incorporated 7 August 2012
69102 - Solicitors
Private Limited Company
Incorporated 2 March 2004
96040 - Physical well-being activities
Private Limited Company
Incorporated 20 January 2025
47910 - Retail sale via mail order houses or via Internet
Private Limited Company
Incorporated 20 February 2020
56103 - Take-away food shops and mobile food stands
Answers use the geographic scope stated with each dataset above.
BT4 3LJ is in Northern Ireland.
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Explore other full postcodes in the same postcode sector.