| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Borøy, Tvedestrand | 4916 |
| Postal/ZIP Codes in Gjeving, Tvedestrand | 4912 |
| Postal/ZIP Codes in Lyngør, Tvedestrand | 4910 |
| Postal/ZIP Codes in Nes Verk, Tvedestrand | 4934 |
| Postal/ZIP Codes in Songe, Tvedestrand | 4909 |
| Postal/ZIP Codes in Tvedestrand, Tvedestrand | 4900, 4903, 4904, 4905 |
| Postal/ZIP Codes in Vestre Sandøya, Tvedestrand | 4915 |