Viga comprises 31 barangays with an estimated population of 24,287. 26 of its barangays (84%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Almojuela | 708 | 0 | Dead zone: no towers from any source |
| Ananong | 384 | 0 | Dead zone: no towers from any source |
| Asuncion (Pob.) | 254 | 0 | Dead zone: no towers from any source |
| Batohonan | 142 | 0 | Dead zone: no towers from any source |
| Begonia | 728 | 0 | Dead zone: no towers from any source |
| Botinagan | 504 | 0 | Dead zone: no towers from any source |
| Buenavista | 478 | 0 | Dead zone: no towers from any source |
| Burgos | 657 | 0 | Dead zone: no towers from any source |
| Del Pilar | 410 | 0 | Dead zone: no towers from any source |
| Mabini | 400 | 0 | Dead zone: no towers from any source |
| Magsaysay | 1,198 | 0 | Dead zone: no towers from any source |
| Ogbong | 1,262 | 0 | Dead zone: no towers from any source |
| Osmeña | 626 | 0 | Dead zone: no towers from any source |
| Pedro Vera (Summit) | 2,017 | 1 | Crowdsourced signal only (no registered tower) |
| Peñafrancia (Pob.) | 511 | 1 | Crowdsourced signal only (no registered tower) |
| Quezon | 444 | 0 | Dead zone: no towers from any source |
| Quirino (Abugan) | 295 | 0 | Dead zone: no towers from any source |
| Rizal | 1,182 | 0 | Dead zone: no towers from any source |
| Roxas | 1,016 | 2 | Crowdsourced signal only (no registered tower) |
| Sagrada | 2,065 | 2 | Crowdsourced signal only (no registered tower) |
| San Isidro (Pob.) | 553 | 0 | Dead zone: no towers from any source |
| San Jose Oco | 778 | 1 | Crowdsourced signal only (no registered tower) |
| San Jose Poblacion | 224 | 0 | Dead zone: no towers from any source |
| San Pedro (Pob.) | 310 | 0 | Dead zone: no towers from any source |
| San Roque (Pob.) | 2,450 | 0 | Dead zone: no towers from any source |
| San Vicente (Pob.) | 1,348 | 0 | Dead zone: no towers from any source |
| Santa Rosa | 523 | 0 | Dead zone: no towers from any source |
| Soboc | 632 | 0 | Dead zone: no towers from any source |
| Tambongon | 952 | 0 | Dead zone: no towers from any source |
| Tinago | 820 | 0 | Dead zone: no towers from any source |
| Villa Aurora | 416 | 0 | Dead zone: no towers from any source |