| Localité | Code postal |
|---|---|
| 6 de Enero 1, Yby Yaú | 010709 |
| 6 de Enero 2, Yby Yaú | 010705 |
| Aguije Pyahu, Yby Yaú | 010703 |
| Aquidaban Poty, Yby Yaú | 010703 |
| Asent. Aguyje, Yby Yaú | 010703 |
| Asent. Jepay Ra, Yby Yaú | 010710 |
| Asent. San Miguel, Yby Yaú | 010710 |
| Cagata, Yby Yaú | 010709 |
| Cañada Aquidaban, Yby Yaú | 010703 |
| Cerro Memby, Yby Yaú | 010706 |
| Cerro Mojon, Yby Yaú | 010705 |
| Ciervo Potrero, Yby Yaú | 010703 |
| Colonia Bernardino Caballero, Yby Yaú | 010705 |
| Com. Indig. Cerro Puka, Yby Yaú | 010705 |
| Com. Indig. Guyra Keha, Yby Yaú | 010703 |
| Com. Indig. Ka'Aguy Poty Rory, Yby Yaú | 010710 |
| Com. Indig. Mberyvo Jaguarymi, Yby Yaú | 010704 |
| Com. Indig. Takuarytiy, Yby Yaú | 010703 |
| Com. Indig. Tekoha Ka'Aguy Pora, Yby Yaú | 010707 |
| Com. Indig. Ypyju Tukambiju, Yby Yaú | 010703 |
| Com. Indig. Yrapey, Yby Yaú | 010708 |
| Com. Indig. Yvy Apu'a, Yby Yaú | 010706 |
| Com. Indig. Yvyraija, Yby Yaú | 010705 |
| Cristo Rey, Yby Yaú | 010709 |
| Cruce Bella Vista, Yby Yaú | 010703 |
| Est Santa Rita, Yby Yaú | 010709 |
| Codes postaux en Concepción | |
|---|---|
| Yby Yaú | Sargento José Félix López |
| San Lázaro | San Carlos Del Apa |
| San Alfredo | Paso Barreto |
| Loreto | Horqueta |
| Concepción | Belén |
| Azotey | Arroyito |