NN - Northampton
The postal area NN (Northampton) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within NN - Northampton
| Country | Post Town | Postal District |
| England | Northampton | NN1 NN2 NN3 NN4 NN5 NN6 NN7 |
| Wellingborough | NN8 NN9 |
|
| Rushden | NN10 | |
| Daventry | NN11 | |
| Towcester | NN12 | |
| Brackley | NN13 | |
| Kettering | NN14 NN15 NN16 |
|
| Corby | NN17 NN18 |
