Find BT4 3LN in Northern Ireland and explore the information recorded for it. The interactive map shows the postcode’s position and an approximate address-derived outline, with exact-postcode facts and wider neighbourhood statistics clearly identified below.
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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 3LN |
| Postcode without spaces | BT43LN |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | December 1984 |
| Directory version | 2026-06 |
| Latitude | 54.5941000 |
| Longitude | -5.8435530 |
| British National Grid | 339,432 E, 373,901 N |
| Country | Northern Ireland |
| Output Area (2021) | N20000979 |
| LSOA (2021) | N21000230 |
| 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 9 April 2025
62012 - Business and domestic software development
Private Limited Company
Incorporated 24 September 2019
62012 - Business and domestic software development
Answers use the geographic scope stated with each dataset above.
BT4 3LN is in Northern Ireland.
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Explore other full postcodes in the same postcode sector.