| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Siemowo, Gostyń | 63-800 |
| Postal/ZIP Codes in Sikorzyn, Gostyń | 63-800 |
| Postal/ZIP Codes in Stankowo, Gostyń | 63-800 |
| Postal/ZIP Codes in Stary Gostyń, Gostyń | 63-800 |
| Postal/ZIP Codes in Stężyca, Gostyń | 63-800 |
| Postal/ZIP Codes in Szczodrochowo, Gostyń | 63-800 |
| Postal/ZIP Codes in Tworzymirki, Gostyń | 63-800 |
| Postal/ZIP Codes in Witoldowo, Gostyń | 63-800 |
| Postal/ZIP Codes in Ziółkowo, Gostyń | 63-840 |