| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Śniardewno, Mikołajki | 11-730 |
| Postal/ZIP Codes in Stare Sady, Mikołajki | 11-730 |
| Postal/ZIP Codes in Stawek, Mikołajki | 11-730 |
| Postal/ZIP Codes in Tałty, Mikołajki | 11-730 |
| Postal/ZIP Codes in Urwitałt, Mikołajki | 11-730 |
| Postal/ZIP Codes in Woźnice, Mikołajki | 11-730 |
| Postal/ZIP Codes in Zełwągi, Mikołajki | 11-730 |