| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Olszanica, Olszanica | 38-722 |
| Postal/ZIP Codes in Orelec, Olszanica | 38-623 |
| Postal/ZIP Codes in Paszowa, Olszanica | 38-711 |
| Postal/ZIP Codes in Rudenka, Olszanica | 38-722 |
| Postal/ZIP Codes in Stefkowa, Olszanica | 38-722 |
| Postal/ZIP Codes in Uherce Mineralne, Olszanica | 38-623 |
| Postal/ZIP Codes in Wańkowa, Olszanica | 38-711 |
| Postal/ZIP Codes in Zwierzyń, Olszanica | 38-623 |