Geidam Local Government Area in Yobe State uses postal codes is 620101.
Here are the postal codes for the towns and districts in Geidam:
| Place/Area | Postal code |
| Bula Kus | 620101 |
| Bulaburum | 620101 |
| Bulama Fordi | 620101 |
| Chungul Dambaram | 620101 |
| Chungul Jabbari | 620101 |
| Damakasu | 620101 |
| Damburam | 620101 |
| Dankalwa | 620101 |
| Debsa | 620101 |
| Gabai | 620101 |
| Garin Maisaja | 620101 |
| Goni Matar | 620101 |
| Gorogi | 620101 |
| Gubberi | 620101 |
| Gulamarram | 620101 |
| Gumunta | 620101 |
| Itsari | 620101 |
| Kaburu | 620101 |
| Kaita | 620101 |
| Kalalawa | 620101 |
| Kontula | 620101 |
| Korari | 620101 |
| Kuilamu | 620101 |
| Kukareta | 620101 |
| Kunguwol | 620101 |
| Kuskuri | 620101 |
| Makunari | 620101 |
| Malamuhari | 620101 |
| Mallam Tari | 620101 |
| Marta | 620101 |
| Nuw | 620101 |
| Sasawa | 620101 |