| Ort | Postleitzahl |
|---|---|
| Barcolan, Gamu | 3301 |
| Buenavista, Gamu | 3301 |
| Dammao, Gamu | 3301 |
| District I, Gamu | 3301 |
| District II, Gamu | 3301 |
| District III, Gamu | 3301 |
| Furao, Gamu | 3301 |
| Guibang, Gamu | 3301 |
| Lenzon, Gamu | 3301 |
| Linglingay, Gamu | 3301 |
| Mabini, Gamu | 3301 |
| Pintor, Gamu | 3301 |
| Rizal, Gamu | 3301 |
| Songsong, Gamu | 3301 |
| Union, Gamu | 3301 |
| Upi, Gamu | 3301 |