Caluya comprises 18 barangays with an estimated population of 20,903. 17 of its barangays (94%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alegria | 223 | 0 | Dead zone: no towers from any source |
| Bacong | 888 | 0 | Dead zone: no towers from any source |
| Banago | 1,151 | 0 | Dead zone: no towers from any source |
| Bonbon | 745 | 0 | Dead zone: no towers from any source |
| Dawis | 462 | 0 | Dead zone: no towers from any source |
| Dionela | 200 | 0 | Dead zone: no towers from any source |
| Harigue | 3,398 | 0 | Dead zone: no towers from any source |
| Hininga-an | 1,701 | 0 | Dead zone: no towers from any source |
| Imba | 708 | 0 | Dead zone: no towers from any source |
| Masanag | 2,500 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,200 | 0 | Dead zone: no towers from any source |
| Sabang | 942 | 0 | Dead zone: no towers from any source |
| Salamento | 2,135 | 0 | Dead zone: no towers from any source |
| Semirara | 1,286 | 5 | Crowdsourced signal only (no registered tower) |
| Sibato | 1,134 | 0 | Dead zone: no towers from any source |
| Sibay | 877 | 0 | Dead zone: no towers from any source |
| Sibolo | 124 | 0 | Dead zone: no towers from any source |
| Tinogboc | 229 | 0 | Dead zone: no towers from any source |