| Place | Postal Code |
|---|---|
| Albinów, Kotuń | 08-122 |
| Bojmie, Kotuń | 08-122 |
| Broszków, Kotuń | 08-130 |
| Chlewiska, Kotuń | 08-130 |
| Cisie-Zagrudzie, Kotuń | 08-130 |
| Czarnowąż, Kotuń | 08-130 |
| Gręzów, Kotuń | 08-130 |
| Jagodne, Kotuń | 08-122 |
| Józefin, Kotuń | 08-130 |
| Kępa, Kotuń | 08-122 |
| Koszewnica, Kotuń | 08-130 |
| Kotuń, Kotuń | 08-130 |
| Łączka, Kotuń | 08-130 |
| Łęki, Kotuń | 08-130 |
| Marysin, Kotuń | 08-130 |
| Mingosy, Kotuń | 08-130 |
| Niechnabrz, Kotuń | 08-130 |
| Nowa Dąbrówka, Kotuń | 08-130 |
| Oleksin, Kotuń | 08-122 |
| Pieńki, Kotuń | 08-122 |
| Pieróg, Kotuń | 08-130 |
| Polaki, Kotuń | 08-130 |
| Rososz, Kotuń | 08-130 |
| Ryczyca, Kotuń | 08-122 |
| Sionna, Kotuń | 08-122 |
| Sosnowe, Kotuń | 08-122 |