Billiri Local Government Area in Gombe State uses postal codes is 771101.
Here are the postal codes for the towns and districts in Billiri:
| Place/Area | Postal Code |
| Todi | 771101 |
| Tudu | 771101 |
| Tudu Kwaya | 771101 |
| Ayabu | 771101 |
| Popandi | 771101 |
| Banganje | 771101 |
| Sabon Layi | 771101 |
| Bare | 771101 |
| Sansani | 771101 |
| Billiri | 771101 |
| Shela | 771101 |
| Kalmai | 771101 |
| Sikirit | 771101 |
| Kulkul | 771101 |
| Tal | 771101 |
| Laberpit | 771101 |
| Tanglang | 771101 |
| Lakalkal | 771101 |
| Lamugu | 771101 |
| Landongor | 771101 |
| Lanshi Daji | 771101 |
| Pade Kungu | 771101 |
| Pandikarmo | 771101 |
| Pandiukude | 771101 |
| Pokuli | 771101 |
| Pokwangli | 771101 |