Mountain Province has 144 barangays across 10 municipalities. 117 barangays (81%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Barlig | 11 | 11 (100%) |
| Bauko | 22 | 18 (82%) |
| Besao | 14 | 13 (93%) |
| Bontoc (Capital) | 16 | 9 (56%) |
| Natonin | 11 | 10 (91%) |
| Paracelis | 9 | 9 (100%) |
| Sabangan | 15 | 10 (67%) |
| Sadanga | 8 | 8 (100%) |
| Sagada | 19 | 15 (79%) |
| Tadian | 19 | 14 (74%) |