Tinambac comprises 44 barangays with an estimated population of 69,267. 36 of its barangays (82%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agay-Ayan | 1,097 | 0 | Dead zone: no towers from any source |
| Antipolo | 2,292 | 0 | Dead zone: no towers from any source |
| Bagacay | 4,347 | 4 | Crowdsourced signal only (no registered tower) |
| Banga | 1,207 | 0 | Dead zone: no towers from any source |
| Bani | 520 | 1 | Crowdsourced signal only (no registered tower) |
| Bataan | 1,299 | 0 | Dead zone: no towers from any source |
| Binalay | 698 | 0 | Dead zone: no towers from any source |
| Bolaobalite | 1,035 | 1 | Crowdsourced signal only (no registered tower) |
| Buenavista | 1,522 | 0 | Dead zone: no towers from any source |
| Buyo | 1,849 | 0 | Dead zone: no towers from any source |
| Cagliliog | 1,906 | 0 | Dead zone: no towers from any source |
| Caloco | 828 | 0 | Dead zone: no towers from any source |
| Camagong | 1,557 | 0 | Dead zone: no towers from any source |
| Canayonan | 2,294 | 0 | Dead zone: no towers from any source |
| Cawaynan | 2,428 | 0 | Dead zone: no towers from any source |
| Daligan | 540 | 0 | Dead zone: no towers from any source |
| Filarca (Pob.) | 1,591 | 0 | Dead zone: no towers from any source |
| La Medalla (Mile 9) | 625 | 0 | Dead zone: no towers from any source |
| La Purisima (Pob.) | 208 | 0 | Dead zone: no towers from any source |
| Lupi | 1,490 | 0 | Dead zone: no towers from any source |
| Magsaysay (Camp 4) | 1,374 | 0 | Dead zone: no towers from any source |
| Magtang | 935 | 0 | Dead zone: no towers from any source |
| Mananao | 4,303 | 1 | Crowdsourced signal only (no registered tower) |
| New Caaluan | 267 | 0 | Dead zone: no towers from any source |
| Olag Grande | 1,780 | 0 | Dead zone: no towers from any source |
| Olag Pequeño | 2,296 | 0 | Dead zone: no towers from any source |
| Old Caaluan | 75 | 0 | Dead zone: no towers from any source |
| Pag-Asa | 1,007 | 0 | Dead zone: no towers from any source |
| Pantat | 1,075 | 0 | Dead zone: no towers from any source |
| Sagrada (Camp 6) | 1,407 | 0 | Dead zone: no towers from any source |
| Salvacion | 2,214 | 1 | Crowdsourced signal only (no registered tower) |
| Salvacion Poblacion | 2,884 | 4 | Crowdsourced signal only (no registered tower) |
| San Antonio | 645 | 0 | Dead zone: no towers from any source |
| San Isidro (Pob.) | 545 | 0 | Dead zone: no towers from any source |
| San Jose (Tiltilan) | 1,733 | 0 | Dead zone: no towers from any source |
| San Pascual (Pob.) | 2,949 | 1 | Crowdsourced signal only (no registered tower) |
| San Ramon (Camp 7) | 2,122 | 0 | Dead zone: no towers from any source |
| San Roque | 416 | 0 | Dead zone: no towers from any source |
| San Vicente | 810 | 0 | Dead zone: no towers from any source |
| Santa Cruz (Pob.) | 967 | 0 | Dead zone: no towers from any source |
| Sogod | 1,896 | 0 | Dead zone: no towers from any source |
| Tambang | 5,645 | 0 | Dead zone: no towers from any source |
| Tierra Nevada | 1,525 | 0 | Dead zone: no towers from any source |
| Union | 1,064 | 1 | Crowdsourced signal only (no registered tower) |