The NN1 3JB postcode was located in West Northamptonshire, West Northamptonshire postcode town, within East Midlands, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1990-07 and terminated on 1991-12.
| Name | Type |
|---|---|
| OA21CD | E00138483 |
| LSOA21CD | E01027227 |
| MSOA21CD | E02005672 |
| MSOA21 | St Michael's Road |
| Postcode Area | NN1 |
| Ward | Castle |
| LTLA22 | West Northamptonshire |
| UTLA22 | West Northamptonshire |
| Region | East Midlands |
| Country | England |
| Co-ordinates | [ -0.8853946410891929, 52.24371938915597 ] |