| Place | Post Code |
|---|---|
| Andarayan North, Solana | 3503 |
| Andarayan South, Solana | 3503 |
| Bangag, Solana | 3503 |
| Bantay, Solana | 3503 |
| Basi East, Solana | 3503 |
| Basi West, Solana | 3503 |
| Bauan East, Solana | 3503 |
| Bauan West, Solana | 3503 |
| Cadaanan, Solana | 3503 |
| Calamagui, Solana | 3503 |
| Calillauan, Solana | 3503 |
| Carilucud, Solana | 3503 |
| Cattaran, Solana | 3503 |
| Centro Northeast, Solana | 3503 |
| Centro Northwest, Solana | 3503 |
| Centro Southeast, Solana | 3503 |
| Centro Southwest, Solana | 3503 |
| Dassun, Solana | 3503 |
| Furagui, Solana | 3503 |
| Gadu, Solana | 3503 |
| Gen. Eulogio Balao, Solana | 3503 |
| Iraga, Solana | 3503 |
| Lanna, Solana | 3503 |
| Lannig, Solana | 3503 |
| Lingu, Solana | 3503 |
| Maddarulug, Solana | 3503 |