Tunga comprises 8 barangays with an estimated population of 4,408. 7 of its barangays (88%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Astorga (Upart) | 581 | 0 | Dead zone: no towers from any source |
| Balire | 702 | 2 | Crowdsourced signal only (no registered tower) |
| Banawang | 184 | 0 | Dead zone: no towers from any source |
| San Antonio (Pob.) | 680 | 0 | Dead zone: no towers from any source |
| San Pedro | 545 | 0 | Dead zone: no towers from any source |
| San Roque | 898 | 0 | Dead zone: no towers from any source |
| San Vicente (Pob.) | 626 | 0 | Dead zone: no towers from any source |
| Santo Niño (Pob.) | 192 | 0 | Dead zone: no towers from any source |