| Locality | Post Code |
|---|---|
| Aviacion, Cerrito | 120301 |
| Baules, Cerrito | 120303 |
| Blanco Ñu, Cerrito | 120302 |
| Central, Cerrito | 120301 |
| Cerrito Sur, Cerrito | 120301 |
| Cerro Ñu, Cerrito | 120303 |
| Costa'I, Cerrito | 120302 |
| Isla Roy, Cerrito | 120302 |
| Kurusu Ava, Cerrito | 120302 |
| Norte, Cerrito | 120301 |
| Obrero, Cerrito | 120301 |
| Paso Tajy, Cerrito | 120302 |
| Potrerito, Cerrito | 120302 |
| Potrero Villalba, Cerrito | 120303 |
| San Salvador, Cerrito | 120302 |
| Takuruty, Cerrito | 120303 |
| Tava'I, Cerrito | 120303 |
| Yryvu Kua, Cerrito | 120302 |
| Zanja Rugua, Cerrito | 120303 |