Map
General Information
| Postal Area | West Northamptonshire |
| Postcode | NN1 1LY |
| User Type | Large (more than 25 items of mail per day) |
| Region | East Midlands |
| Country | England |
| Local authority | West Northamptonshire |
| Introduction Date | 1981-06-01 |
| Termination Date | 1986-12-01 |
Geographic Information
| Latitude | 52.2365700 |
| Longitude | -0.8899670 |
| Easting | 475900 |
| Northing | 260400 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |