Biriniwa Local Government Area in Jigawa State uses postal codes is 731106.
Here are the postal codes for the towns and districts in Biriniwa:
| Place/Area | Postal Code |
| Batu | 731106 |
| Tssinkaina | 731106 |
| Birniwa | 731106 |
| Unguwa | 731106 |
| Burseli | 731106 |
| Dagilfani | 731106 |
| Dangwalaeri | 731106 |
| Dingisa | 731106 |
| Dole | 731106 |
| Isfari | 731106 |
| Kachaliari | 731106 |
| Karanga | 731106 |
| Kazura | 731106 |
| Kilbu | 731106 |
| Kishinde | 731106 |
| Kukawa | 731106 |
| Machinamari | 731106 |
| Mungurum | 731106 |