NN4
8 sectors, 981 postcodes
West Northamptonshire
| Sector | Postcodes | Local authority |
|---|
| NN4 0 | 184 | West Northamptonshire |
| NN4 1 | 3 | West Northamptonshire |
| NN4 4 | 22 | West Northamptonshire |
| NN4 5 | 75 | West Northamptonshire |
| NN4 6 | 207 | West Northamptonshire |
| NN4 7 | 81 | West Northamptonshire |
| NN4 8 | 265 | West Northamptonshire |
| NN4 9 | 144 | West Northamptonshire |