Cabagan comprises 26 barangays with an estimated population of 54,426. 16 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 |
|---|---|---|---|
| Aggub | 941 | 0 | Dead zone: no towers from any source |
| Anao | 2,687 | 2 | Crowdsourced signal only (no registered tower) |
| Angancasilian | 2,006 | 0 | Dead zone: no towers from any source |
| Balasig | 3,580 | 0 | Dead zone: no towers from any source |
| Cansan | 5,746 | 2 | Crowdsourced signal only (no registered tower) |
| Casibarag Norte | 2,739 | 4 | Crowdsourced signal only (no registered tower) |
| Casibarag Sur | 1,164 | 0 | Dead zone: no towers from any source |
| Catabayungan | 3,528 | 7 | Crowdsourced signal only (no registered tower) |
| Centro (Pob.) | 1,538 | 0 | Dead zone: no towers from any source |
| Cubag | 4,426 | 5 | Crowdsourced signal only (no registered tower) |
| Garita | 2,162 | 6 | Crowdsourced signal only (no registered tower) |
| Luquilu | 2,274 | 0 | Dead zone: no towers from any source |
| Mabangug | 712 | 0 | Dead zone: no towers from any source |
| Magassi | 2,091 | 1 | Crowdsourced signal only (no registered tower) |
| Masipi East | 252 | 0 | Dead zone: no towers from any source |
| Masipi West | 430 | 0 | Dead zone: no towers from any source |
| Ngarag | 3,201 | 1 | Crowdsourced signal only (no registered tower) |
| Pilig Abajo | 1,338 | 0 | Dead zone: no towers from any source |
| Pilig Alto | 1,392 | 0 | Dead zone: no towers from any source |
| San Antonio | 1,087 | 1 | Crowdsourced signal only (no registered tower) |
| San Bernardo | 3,253 | 0 | Dead zone: no towers from any source |
| San Juan | 2,427 | 0 | Dead zone: no towers from any source |
| Saui | 1,242 | 0 | Dead zone: no towers from any source |
| Tallag | 959 | 0 | Dead zone: no towers from any source |
| Ugad | 3,061 | 8 | Crowdsourced signal only (no registered tower) |
| Union | 190 | 0 | Dead zone: no towers from any source |