| Locality | Postal Code |
|---|---|
| Arroyito, Coronel Martinez | 040403 |
| Capellan Cardozo, Coronel Martinez | 040403 |
| Costa Barrios, Coronel Martinez | 040402 |
| Ferreira, Coronel Martinez | 040405 |
| Inmaculada Concepcion, Coronel Martinez | 040401 |
| Monges Paso, Coronel Martinez | 040402 |
| Monges Rugua, Coronel Martinez | 040402 |
| Potrero Villar, Coronel Martinez | 040402 |
| Sagrado Corazon de Jesus, Coronel Martinez | 040401 |
| San Miguel, Coronel Martinez | 040401 |
| San Pedro, Coronel Martinez | 040401, 040403 |
| San Ramon, Coronel Martinez | 040401 |
| Teniente Bogado, Coronel Martinez | 040404 |
| Virgen de Fatima, Coronel Martinez | 040401 |