| Country | England |
|---|---|
| UK region | East Midlands |
| Postcode area | NN |
| District | South Northamptonshire |
Castle Ashby postcode districts
Castle Ashby has 1 postcode district
Castle Ashby postcode sectors
Castle Ashby has 1 postcode sector
| Country | England |
|---|---|
| UK region | East Midlands |
| Postcode area | NN |
| District | South Northamptonshire |
Castle Ashby has 1 postcode district
Castle Ashby has 1 postcode sector