| Localité | Code postal |
|---|---|
| 15 de Agosto, Acahay | 090201 |
| Arroyo Verde, Acahay | 090205 |
| Caraguatay Guasu, Acahay | 090205 |
| Caraguatay Mi, Acahay | 090205 |
| Central, Acahay | 090201 |
| Cerro Corá, Acahay | 090202 |
| Cerro Guy, Acahay | 090203 |
| Cerro Ice, Acahay | 090209 |
| Costa Baez, Acahay | 090204 |
| Costa Baez-Jukyty, Acahay | 090204 |
| Costa Peña, Acahay | 090208 |
| Isla Baez, Acahay | 090207 |
| Isleria, Acahay | 090206 |
| Itakyty, Acahay | 090204 |
| Laguna Pyta, Acahay | 090203 |
| Monseñor Bogarin, Acahay | 090201 |
| Monseñor Cardenas, Acahay | 090201 |
| Ñu Ahai, Acahay | 090206 |
| Pintos, Acahay | 090209 |
| Potrerito, Acahay | 090209 |
| Potrero Arce, Acahay | 090208 |
| Recoleta I, Acahay | 090205 |
| Rincon, Acahay | 090203 |
| Rivarola Kue, Acahay | 090209 |
| San Alfonso, Acahay | 090201 |
| San Blas, Acahay | 090201 |