The NN1 1SZ postcode was located in West Northamptonshire, West Northamptonshire postcode town, within East Midlands, England region.
It is now a terminated postcode, it was a Small User postcode introduced in 1980-01 and terminated on 2014-12.
| Name | Type |
|---|---|
| OA21CD | E00169259 |
| LSOA21CD | E01032979 |
| MSOA21CD | E02005670 |
| MSOA21 | Town Centre & Semilong |
| Postcode Area | NN1 |
| Ward | Castle |
| LTLA22 | West Northamptonshire |
| UTLA22 | West Northamptonshire |
| Region | East Midlands |
| Country | England |
| Co-ordinates | [ -0.9036741520590452, 52.23536731759474 ] |