Map
General Information
| Postal Area | West Northamptonshire |
| Postcode | NN1 1HN |
| User Type | Large (more than 25 items of mail per day) |
| Region | East Midlands |
| Country | England |
| Local authority | West Northamptonshire |
| Introduction Date | 1994-12-01 |
| Termination Date | 1999-12-01 |
Geographic Information
| Latitude | 52.2359170 |
| Longitude | -0.8951090 |
| Easting | 475550 |
| Northing | 260322 |
| Quality | Postcode sector mean, (mainly PO Boxes) |