Abra has 303 barangays across 27 municipalities. 271 barangays (89%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Bangued (Capital) | 31 | 21 (68%) |
| Boliney | 8 | 8 (100%) |
| Bucay | 21 | 17 (81%) |
| Bucloc | 4 | 3 (75%) |
| Daguioman | 4 | 2 (50%) |
| Danglas | 7 | 7 (100%) |
| Dolores | 15 | 14 (93%) |
| La Paz | 12 | 11 (92%) |
| Lacub | 6 | 6 (100%) |
| Lagangilang | 17 | 14 (82%) |
| Lagayan | 5 | 5 (100%) |
| Langiden | 6 | 5 (83%) |
| Licuan-Baay (Licuan) | 11 | 11 (100%) |
| Luba | 8 | 8 (100%) |
| Malibcong | 12 | 12 (100%) |
| Manabo | 11 | 11 (100%) |
| Peñarrubia | 9 | 7 (78%) |
| Pidigan | 15 | 14 (93%) |
| Pilar | 19 | 17 (89%) |
| Sallapadan | 9 | 9 (100%) |
| San Isidro | 9 | 8 (89%) |
| San Juan | 19 | 18 (95%) |
| San Quintin | 6 | 5 (83%) |
| Tayum | 11 | 10 (91%) |
| Tineg | 10 | 10 (100%) |
| Tubo | 10 | 10 (100%) |
| Villaviciosa | 8 | 8 (100%) |