Masbate has 550 barangays across 21 municipalities. 504 barangays (92%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Aroroy | 41 | 37 (90%) |
| Baleno | 24 | 18 (75%) |
| Balud | 32 | 32 (100%) |
| Batuan | 14 | 14 (100%) |
| Cataingan | 36 | 31 (86%) |
| Cawayan | 37 | 36 (97%) |
| City of Masbate (Capital) | 30 | 15 (50%) |
| Claveria | 22 | 22 (100%) |
| Dimasalang | 20 | 19 (95%) |
| Esperanza | 20 | 20 (100%) |
| Mandaon | 26 | 26 (100%) |
| Milagros | 27 | 25 (93%) |
| Mobo | 29 | 28 (97%) |
| Monreal | 11 | 11 (100%) |
| Palanas | 24 | 23 (96%) |
| Pio V. Corpus (Limbuhan) | 18 | 16 (89%) |
| Placer | 35 | 34 (97%) |
| San Fernando | 26 | 26 (100%) |
| San Jacinto | 21 | 17 (81%) |
| San Pascual | 22 | 21 (95%) |
| Uson | 35 | 33 (94%) |