All postcodes in NN3 0
| Postcode | Place | Type |
|---|---|---|
| NN3 0AN | Northampton | large user |
| NN3 0AS | Northampton | large user |
| NN3 0DB | Northampton | large user |
| NN3 0DT | Northampton | large user |
| NN3 0EA | Northampton | large user |
| NN3 0EG | Northampton | large user |
| NN3 0EP | Northampton | large user |