Sinait comprises 44 barangays with an estimated population of 24,081. 32 of its barangays (73%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Aguing | 255 | 0 | Dead zone: no towers from any source |
| Baliw | 187 | 1 | Crowdsourced signal only (no registered tower) |
| Ballaigui (Pob.) | 200 | 0 | Dead zone: no towers from any source |
| Baracbac | 561 | 0 | Dead zone: no towers from any source |
| Barikir | 430 | 2 | Crowdsourced signal only (no registered tower) |
| Battog | 485 | 0 | Dead zone: no towers from any source |
| Binacud | 275 | 0 | Dead zone: no towers from any source |
| Cabangtalan | 332 | 1 | Crowdsourced signal only (no registered tower) |
| Cabarambanan | 306 | 0 | Dead zone: no towers from any source |
| Cabulalaan | 437 | 0 | Dead zone: no towers from any source |
| Cadanglaan | 417 | 0 | Dead zone: no towers from any source |
| Calanutian | 734 | 3 | Crowdsourced signal only (no registered tower) |
| Calingayan | 117 | 0 | Dead zone: no towers from any source |
| Curtin | 656 | 2 | Crowdsourced signal only (no registered tower) |
| Dadalaquiten Norte | 487 | 0 | Dead zone: no towers from any source |
| Dadalaquiten Sur | 338 | 0 | Dead zone: no towers from any source |
| Dean Leopoldo Yabes (Pug-os) | 1,240 | 1 | Crowdsourced signal only (no registered tower) |
| Duyayyat | 765 | 0 | Dead zone: no towers from any source |
| Jordan | 875 | 3 | Crowdsourced signal only (no registered tower) |
| Katipunan | 656 | 0 | Dead zone: no towers from any source |
| Macabiag (Pob.) | 1,399 | 1 | Crowdsourced signal only (no registered tower) |
| Magsaysay | 770 | 3 | Crowdsourced signal only (no registered tower) |
| Marnay | 287 | 0 | Dead zone: no towers from any source |
| Masadag | 419 | 0 | Dead zone: no towers from any source |
| Nagbalioartian | 625 | 0 | Dead zone: no towers from any source |
| Nagcullooban | 529 | 0 | Dead zone: no towers from any source |
| Nagongburan | 233 | 0 | Dead zone: no towers from any source |
| Namnama (Pob.) | 498 | 2 | Crowdsourced signal only (no registered tower) |
| Pacis | 413 | 0 | Dead zone: no towers from any source |
| Paratong | 1,008 | 0 | Dead zone: no towers from any source |
| Purag | 472 | 0 | Dead zone: no towers from any source |
| Quibit-quibit | 288 | 0 | Dead zone: no towers from any source |
| Quimmallogong | 711 | 0 | Dead zone: no towers from any source |
| Rang-ay (Pob.) | 443 | 0 | Dead zone: no towers from any source |
| Ricudo | 751 | 0 | Dead zone: no towers from any source |
| Sabañgan (Marcos) | 681 | 0 | Dead zone: no towers from any source |
| Sallacapo | 534 | 0 | Dead zone: no towers from any source |
| Santa Cruz | 798 | 2 | Crowdsourced signal only (no registered tower) |
| Sapriana | 545 | 0 | Dead zone: no towers from any source |
| Tapao | 1,057 | 1 | Crowdsourced signal only (no registered tower) |
| Teppeng | 1,095 | 0 | Dead zone: no towers from any source |
| Tubigay | 401 | 0 | Dead zone: no towers from any source |
| Ubbog | 127 | 0 | Dead zone: no towers from any source |
| Zapat | 244 | 0 | Dead zone: no towers from any source |