Sibuco comprises 28 barangays with an estimated population of 44,460. 28 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Anongan | 3,487 | 0 | Dead zone: no towers from any source |
| Basak | 228 | 0 | Dead zone: no towers from any source |
| Bongalao | 1,375 | 0 | Dead zone: no towers from any source |
| Cabbunan | 3,110 | 0 | Dead zone: no towers from any source |
| Cawit-cawit | 2,961 | 0 | Dead zone: no towers from any source |
| Culaguan | 1,402 | 0 | Dead zone: no towers from any source |
| Cusipan | 405 | 0 | Dead zone: no towers from any source |
| Dinulan | 620 | 0 | Dead zone: no towers from any source |
| Jatian | 910 | 0 | Dead zone: no towers from any source |
| Kamarangan | 1,432 | 0 | Dead zone: no towers from any source |
| Lakiki | 1,152 | 0 | Dead zone: no towers from any source |
| Lambagoan | 527 | 0 | Dead zone: no towers from any source |
| Limpapa | 685 | 0 | Dead zone: no towers from any source |
| Lingayon | 321 | 0 | Dead zone: no towers from any source |
| Lintangan | 7,237 | 0 | Dead zone: no towers from any source |
| Litawan | 1,274 | 0 | Dead zone: no towers from any source |
| Lunday | 2,105 | 0 | Dead zone: no towers from any source |
| Malayal | 3,531 | 0 | Dead zone: no towers from any source |
| Mantivo | 878 | 0 | Dead zone: no towers from any source |
| Nala (Pob.) | 1,225 | 0 | Dead zone: no towers from any source |
| Panganuran | 453 | 0 | Dead zone: no towers from any source |
| Pangian | 879 | 0 | Dead zone: no towers from any source |
| Paniran | 877 | 0 | Dead zone: no towers from any source |
| Pasilnahut | 146 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,705 | 0 | Dead zone: no towers from any source |
| Puliran | 232 | 0 | Dead zone: no towers from any source |
| Santo Niño (Culabog) | 2,190 | 0 | Dead zone: no towers from any source |
| Tangarak | 2,113 | 0 | Dead zone: no towers from any source |