| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Bangsund, Namsos | 7822 |
| Postal/ZIP Codes in Fosslandsosen, Namsos | 7819 |
| Postal/ZIP Codes in Jøa, Namsos | 7856 |
| Postal/ZIP Codes in Namdalseid, Namsos | 7750 |
| Postal/ZIP Codes in Namsos, Namsos | 7800, 7802, 7803, 7804, 7805, … |
| Postal/ZIP Codes in Nord-Statland, Namsos | 7777 |
| Postal/ZIP Codes in Salsnes, Namsos | 7817 |
| Postal/ZIP Codes in Spillum, Namsos | 7820 |