Capalonga comprises 22 barangays with an estimated population of 35,700. 21 of its barangays (95%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alayao | 4,219 | 0 | Dead zone: no towers from any source |
| Binawangan | 1,922 | 1 | Crowdsourced signal only (no registered tower) |
| Calabaca | 1,187 | 0 | Dead zone: no towers from any source |
| Camagsaan | 1,420 | 0 | Dead zone: no towers from any source |
| Catabaguangan | 776 | 0 | Dead zone: no towers from any source |
| Catioan | 4,780 | 0 | Dead zone: no towers from any source |
| Del Pilar | 1,641 | 0 | Dead zone: no towers from any source |
| Itok | 2,034 | 0 | Dead zone: no towers from any source |
| Lucbanan | 1,206 | 0 | Dead zone: no towers from any source |
| Mabini | 419 | 0 | Dead zone: no towers from any source |
| Mactang | 1,083 | 0 | Dead zone: no towers from any source |
| Magsaysay | 1,579 | 0 | Dead zone: no towers from any source |
| Mataque | 1,224 | 0 | Dead zone: no towers from any source |
| Old Camp | 2,241 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,645 | 0 | Dead zone: no towers from any source |
| San Antonio | 363 | 0 | Dead zone: no towers from any source |
| San Isidro | 504 | 0 | Dead zone: no towers from any source |
| San Roque | 1,013 | 0 | Dead zone: no towers from any source |
| Tanawan | 953 | 0 | Dead zone: no towers from any source |
| Ubang | 2,686 | 0 | Dead zone: no towers from any source |
| Villa Aurora | 1,422 | 0 | Dead zone: no towers from any source |
| Villa Belen | 1,383 | 0 | Dead zone: no towers from any source |