| Postal Code | Locality / District | Administrative Area | Coordinates |
|---|---|---|---|
| Ouallam | Ouallam Department · Tillaberi | 14.31641, 2.08597 | |
| Yan Bangou | Ouallam Department · Tillaberi | 14.35857, 2.56163 | |
| Yalouma | Ouallam Department · Tillaberi | 14.43788, 2.37089 | |
| Yadya | Ouallam Department · Tillaberi | 14.51008, 2.6932 | |
| Tourbèy | Ouallam Department · Tillaberi | 14.75344, 1.90481 | |
| Tougouzéfa | Ouallam Department · Tillaberi | 14.56683, 1.98895 | |
| Toudiani | Ouallam Department · Tillaberi | 14.28227, 2.57379 | |
| Tongo Tongo | Ouallam Department · Tillaberi | 15.0522, 1.8318 |
Postal code prefix 78 in Niger covers 8 localities (primarily in Tillaberi, including Ouallam), spanning from 7800 to 7807.
There are 8 active postal codes starting with 78 in Niger. Use the interactive directory table above to filter by locality or copy any code in one click.