Tigbao comprises 18 barangays with an estimated population of 20,247. 12 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 |
|---|---|---|---|
| Begong | 750 | 8 | Crowdsourced signal only (no registered tower) |
| Busol | 471 | 0 | Dead zone: no towers from any source |
| Caluma | 238 | 0 | Dead zone: no towers from any source |
| Diana Countryside | 2,029 | 0 | Dead zone: no towers from any source |
| Guinlin | 629 | 0 | Dead zone: no towers from any source |
| Lacarayan | 1,367 | 0 | Dead zone: no towers from any source |
| Lacupayan | 2,033 | 1 | Crowdsourced signal only (no registered tower) |
| Libayoy | 1,390 | 0 | Dead zone: no towers from any source |
| Limas | 720 | 0 | Dead zone: no towers from any source |
| Longmot | 297 | 0 | Dead zone: no towers from any source |
| Maragang | 2,430 | 2 | Crowdsourced signal only (no registered tower) |
| Mate | 860 | 0 | Dead zone: no towers from any source |
| Nangan-nangan | 1,629 | 0 | Dead zone: no towers from any source |
| New Tuburan | 565 | 0 | Dead zone: no towers from any source |
| Nilo | 1,015 | 6 | Crowdsourced signal only (no registered tower) |
| Tigbao | 1,901 | 3 | Crowdsourced signal only (no registered tower) |
| Timolan | 108 | 0 | Dead zone: no towers from any source |
| Upper Nilo | 1,815 | 4 | Crowdsourced signal only (no registered tower) |