Davao Occidental has 105 barangays across 5 municipalities. 98 barangays (93%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Don Marcelino | 15 | 13 (87%) |
| Jose Abad Santos (Trinidad) | 26 | 26 (100%) |
| Malita | 30 | 27 (90%) |
| Santa Maria | 22 | 20 (91%) |
| Sarangani | 12 | 12 (100%) |