| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Phahom, Muangphoun | 18000 |
| Postal/ZIP Codes in Phonekeothong, Muangphoun | 18000 |
| Postal/ZIP Codes in Phonexai, Muangphoun | 18000 |
| Postal Codes in Longsan | |
|---|---|
| Postal/ZIP Codes in Longchaeng, Longsan | |
| Postal/ZIP Codes in Muangphoun, Longsan | |