| Place | Post Code |
|---|---|
| Boży Dar, Sitno | 22-424 |
| Cześniki, Sitno | 22-424 |
| Cześniki-Kolonia, Sitno | 22-424 |
| Czołki, Sitno | 22-424 |
| Horyszów-Nowa Kolonia, Sitno | 22-424 |
| Horyszów Polski, Sitno | 22-424 |
| Horyszów-Stara Kolonia, Sitno | 22-424 |
| Janówka, Sitno | 22-424 |
| Jarosławiec, Sitno | 22-424 |
| Karp, Sitno | 22-424 |
| Kolonia Sitno, Sitno | 22-424 |
| Kornelówka, Sitno | 22-424 |
| Kornelówka-Kolonia, Sitno | 22-424 |
| Rozdoły, Sitno | 22-424 |
| Sitno, Sitno | 22-424 |
| Stabrów, Sitno | 22-424 |
| Stanisławka, Sitno | 22-424 |
| Wólka Horyszowska, Sitno | 22-424 |