Quirino has 132 barangays across 6 municipalities. 87 barangays (66%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Aglipay | 25 | 16 (64%) |
| Cabarroguis (Capital) | 17 | 10 (59%) |
| Diffun | 33 | 20 (61%) |
| Maddela | 32 | 25 (78%) |
| Nagtipunan | 16 | 14 (88%) |
| Saguday | 9 | 2 (22%) |