| Place | Post Code |
|---|---|
| Kangsan, Phialo | 02000 |
| Nouteun, Phialo | 02000 |
| Phialo Kao, Phialo | 02000 |
| Phialo Mai, Phialo | 02000 |
| Ponghy, Phialo | 02000 |
| Saoye, Phialo | 02000 |
| Tintok, Phialo | 02000 |
| All postal codes in May | |
|---|---|
| Houaykop, May | |
| Kounglouk, May | |
| Nalam, May | |
| Namnga, May | |
| Pakphae, May | |
| Palan, May | |
| Phialo, May | |
| Phonxai, May | |
| Poungyang, May | |
| Sophoun, May | |