Tubay comprises 13 barangays with an estimated population of 23,746. 9 of its barangays (69%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Binuangan | 338 | 0 | Dead zone: no towers from any source |
| Cabayawa | 1,206 | 0 | Dead zone: no towers from any source |
| Doña Rosario | 2,176 | 2 | Crowdsourced signal only (no registered tower) |
| Doña Telesfora | 2,271 | 0 | Dead zone: no towers from any source |
| La Fraternidad | 2,361 | 0 | Dead zone: no towers from any source |
| Lawigan | 632 | 0 | Dead zone: no towers from any source |
| Poblacion 1 | 3,242 | 0 | Dead zone: no towers from any source |
| Poblacion 2 | 2,803 | 0 | Dead zone: no towers from any source |
| Santa Ana | 4,198 | 3 | Crowdsourced signal only (no registered tower) |
| Tagmamarkay | 2,140 | 5 | Crowdsourced signal only (no registered tower) |
| Tagpangahoy | 429 | 0 | Dead zone: no towers from any source |
| Tinigbasan | 930 | 0 | Dead zone: no towers from any source |
| Victory | 1,020 | 4 | Crowdsourced signal only (no registered tower) |