| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Barro, Barro | 63380-000 |
| Postal/ZIP Codes in Cuncas, Barro | 63395-000 |
| Postal/ZIP Codes in Engenho Velho, Barro | 63383-000 |
| Postal/ZIP Codes in Iara, Barro | 63390-000 |
| Postal/ZIP Codes in Monte Alegre, Barro | 63389-000 |
| Postal/ZIP Codes in Santo Antônio, Barro | 63385-000 |
| Postal/ZIP Codes in Serrota, Barro | 63392-000 |