Agusan del Sur has 314 barangays across 14 municipalities. 231 barangays (74%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Bunawan | 10 | 4 (40%) |
| City of Bayugan | 43 | 32 (74%) |
| Esperanza | 47 | 47 (100%) |
| La Paz | 15 | 14 (93%) |
| Loreto | 17 | 16 (94%) |
| Prosperidad (Capital) | 32 | 24 (75%) |
| Rosario | 11 | 5 (45%) |
| San Francisco | 27 | 11 (41%) |
| San Luis | 25 | 21 (84%) |
| Santa Josefa | 11 | 6 (55%) |
| Sibagat | 24 | 16 (67%) |
| Talacogon | 16 | 10 (62%) |
| Trento | 16 | 9 (56%) |
| Veruela | 20 | 16 (80%) |