| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Wierzbica, Serock | 05-140 |
| Postal/ZIP Codes in Wola Kiełpińska, Serock | 05-140 |
| Postal/ZIP Codes in Wola Smolana, Serock | 05-140 |
| Postal/ZIP Codes in Zabłocie, Serock | 05-140 |
| Postal/ZIP Codes in Zalesie Borowe, Serock | 05-140 |
| Postal/ZIP Codes in Zegrze, Serock | 05-131 |