Karasuwa Local Government Area in Yobe State uses postal codes is 630103.
Here are the postal codes for the towns and districts in Karasuwa:
| Place/Area | Postal code |
| Bukarti | 630103 |
| Fajiganari | 630103 |
| Garin Gawo | 630103 |
| Garu-Guna | 630103 |
| Gasma | 630103 |
| Jaji-Maji | 630103 |
| Karasuwa | 630103 |
| Waro | 630103 |
| Yajiri | 630103 |