Gashaka Local Government Area in Taraba State uses postal codes is 663101.
Here are the postal codes for the towns and districts in Gashaka:
| Place/Area | Postal code |
| Adagoro | 663101 |
| Gidan Usman | 663101 |
| Sangere | 663101 |
| Azoratar | 663101 |
| Goje | 663101 |
| Sarkin Ruwa | 663101 |
| Balewa | 663101 |
| Gumti | 663101 |
| Serbe | 663101 |
| Boder | 663101 |
| Injawai | 663101 |
| Serti | 663101 |
| Burtai | 663101 |
| Jamtari | 663101 |
| Taraba | 663101 |
| Danbarau | 663101 |
| Karamti | 663101 |
| Tonga | 663101 |
| Dandi Gazabu | 663101 |
| Kobaje | 663101 |
| Tungwa | 663101 |
| Dogo Ajam | 663101 |
| Kofai-Kwagir | 663101 |
| Yakuba | 663101 |
| Gameri | 663101 |
| Lagaso | 663101 |
| Gandole | 663101 |
| Mai Suma | 663101 |
| Gangumi | 663101 |
| Mayo Handu | 663101 |
| Garbabi | 663101 |
| Mayo Kam | 663101 |
| Gashaka | 663101 |
| Mayo Selbe | 663101 |
| Gayam | 663101 |
| Mayo-Yim | 663101 |
| Geidam Gindin-Dutse | 663101 |
| Nagamu Sallama | 663101 |
| Gidan Tiv | 663101 |
| Nyabar | 663101 |