Map
General Information
| Postal Area | West Northamptonshire |
| Postcode | NN1 1SJ |
| User Type | Large (more than 25 items of mail per day) |
| Region | East Midlands |
| Country | England |
| Local authority | West Northamptonshire |
| Introduction Date | 1984-02-01 |
| Termination Date | 1991-12-01 |
| IMD 2025 | Decile 1 (most deprived = 1, least = 10) Rank 2,631 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 52.2366790 |
| Longitude | -0.9016800 |
| Easting | 475100 |
| Northing | 260400 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |