| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Biskupice, Olsztyn | 42-256 |
| Postal/ZIP Codes in Bloki Kolejowe, Olsztyn | 42-263 |
| Postal/ZIP Codes in Bukowno, Olsztyn | 42-256 |
| Postal/ZIP Codes in Krasawa, Olsztyn | 42-256 |
| Postal/ZIP Codes in Kusięta, Olsztyn | 42-256 |
| Postal/ZIP Codes in Olsztyn, Olsztyn | 42-256 |
| Postal/ZIP Codes in Przymiłowice, Olsztyn | 42-256 |
| Postal/ZIP Codes in Skrajnica, Olsztyn | 42-256 |
| Postal/ZIP Codes in Turów, Olsztyn | 42-256 |
| Postal/ZIP Codes in Zrębice, Olsztyn | 42-256 |