Sibagat comprises 24 barangays with an estimated population of 42,416. 16 of its barangays (67%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Afga | 2,373 | 3 | Crowdsourced signal only (no registered tower) |
| Anahawan | 1,058 | 1 | Crowdsourced signal only (no registered tower) |
| Banagbanag | 1,516 | 0 | Dead zone: no towers from any source |
| Del Rosario | 285 | 0 | Dead zone: no towers from any source |
| El Rio | 2,114 | 2 | Crowdsourced signal only (no registered tower) |
| Ilihan | 3,091 | 0 | Dead zone: no towers from any source |
| Kauswagan | 708 | 0 | Dead zone: no towers from any source |
| Kioya | 861 | 0 | Dead zone: no towers from any source |
| Kolambugan | 1,757 | 0 | Dead zone: no towers from any source |
| Magkalape | 1,268 | 0 | Dead zone: no towers from any source |
| Magsaysay | 349 | 0 | Dead zone: no towers from any source |
| Mahayahay | 960 | 2 | Crowdsourced signal only (no registered tower) |
| New Tubigon | 4,948 | 0 | Dead zone: no towers from any source |
| Padiay | 1,983 | 0 | Dead zone: no towers from any source |
| Perez | 1,139 | 0 | Dead zone: no towers from any source |
| Poblacion | 4,429 | 8 | Crowdsourced signal only (no registered tower) |
| San Isidro | 2,175 | 0 | Dead zone: no towers from any source |
| San Vicente | 1,962 | 3 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 761 | 0 | Dead zone: no towers from any source |
| Santa Maria | 4,140 | 0 | Dead zone: no towers from any source |
| Sinai | 881 | 0 | Dead zone: no towers from any source |
| Tabon-tabon | 1,881 | 1 | Crowdsourced signal only (no registered tower) |
| Tag-uyango | 519 | 1 | Crowdsourced signal only (no registered tower) |
| Villangit | 1,258 | 0 | Dead zone: no towers from any source |