Calbiga comprises 41 barangays with an estimated population of 22,169. 37 of its barangays (90%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Antol | 128 | 0 | Dead zone: no towers from any source |
| Bacyaran | 842 | 1 | Crowdsourced signal only (no registered tower) |
| Barangay 1 (Pob.) | 18 | 0 | Dead zone: no towers from any source |
| Barangay 2 (Pob.) | 0 | 0 | Dead zone: no towers from any source |
| Barangay 3 (Pob.) | 7 | 0 | Dead zone: no towers from any source |
| Barangay 4 (Pob.) | 30 | 0 | Dead zone: no towers from any source |
| Barangay 5 (Pob.) | 22 | 0 | Dead zone: no towers from any source |
| Barangay 6 (Pob.) | 34 | 0 | Dead zone: no towers from any source |
| Barangay 7 (Pob.) | 37 | 0 | Dead zone: no towers from any source |
| Barobaybay | 1,176 | 0 | Dead zone: no towers from any source |
| Beri | 142 | 0 | Dead zone: no towers from any source |
| Binanggaran | 124 | 0 | Dead zone: no towers from any source |
| Borong | 608 | 0 | Dead zone: no towers from any source |
| Bulao | 159 | 0 | Dead zone: no towers from any source |
| Buluan | 440 | 0 | Dead zone: no towers from any source |
| Caamlongan | 185 | 0 | Dead zone: no towers from any source |
| Calayaan | 480 | 0 | Dead zone: no towers from any source |
| Calingonan | 925 | 0 | Dead zone: no towers from any source |
| Canbagtic | 345 | 0 | Dead zone: no towers from any source |
| Canticum | 2,175 | 1 | Crowdsourced signal only (no registered tower) |
| Daligan | 100 | 0 | Dead zone: no towers from any source |
| Guinbanga | 191 | 0 | Dead zone: no towers from any source |
| Hindang | 162 | 0 | Dead zone: no towers from any source |
| Hubasan | 102 | 0 | Dead zone: no towers from any source |
| Literon | 203 | 0 | Dead zone: no towers from any source |
| Lubang | 195 | 0 | Dead zone: no towers from any source |
| Macaalan | 323 | 0 | Dead zone: no towers from any source |
| Mahangcao | 425 | 0 | Dead zone: no towers from any source |
| Malabal | 3,683 | 0 | Dead zone: no towers from any source |
| Minata | 337 | 0 | Dead zone: no towers from any source |
| Otoc | 204 | 0 | Dead zone: no towers from any source |
| Panayuran | 310 | 0 | Dead zone: no towers from any source |
| Pasigay | 806 | 0 | Dead zone: no towers from any source |
| Patong | 1,673 | 0 | Dead zone: no towers from any source |
| Polangi | 1,210 | 1 | Crowdsourced signal only (no registered tower) |
| Rawis | 941 | 0 | Dead zone: no towers from any source |
| San Ignacio | 610 | 0 | Dead zone: no towers from any source |
| San Mauricio | 408 | 0 | Dead zone: no towers from any source |
| Sinalangtan | 751 | 0 | Dead zone: no towers from any source |
| Timbangan | 178 | 1 | Crowdsourced signal only (no registered tower) |
| Tinago | 1,480 | 0 | Dead zone: no towers from any source |