Tublay comprises 8 barangays with an estimated population of 24,417. 5 of its barangays (62%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Ambassador | 8,904 | 4 | Crowdsourced signal only (no registered tower) |
| Ambongdolan | 1,251 | 0 | Dead zone: no towers from any source |
| Ba-ayan | 2,742 | 0 | Dead zone: no towers from any source |
| Basil | 2,039 | 0 | Dead zone: no towers from any source |
| Caponga (Pob.) | 3,973 | 13 | Crowdsourced signal only (no registered tower) |
| Daclan | 3,250 | 0 | Dead zone: no towers from any source |
| Tublay Central | 1,388 | 0 | Dead zone: no towers from any source |
| Tuel | 870 | 1 | Crowdsourced signal only (no registered tower) |