Bagabag comprises 17 barangays with an estimated population of 44,265. 4 of its barangays (24%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bakir | 1,557 | 3 | Crowdsourced signal only (no registered tower) |
| Baretbet | 5,935 | 3 | Crowdsourced signal only (no registered tower) |
| Careb | 2,737 | 0 | Dead zone: no towers from any source |
| Lantap | 2,456 | 4 | Crowdsourced signal only (no registered tower) |
| Murong | 4,707 | 2 | Crowdsourced signal only (no registered tower) |
| Nangalisan | 1,681 | 0 | Dead zone: no towers from any source |
| Paniki | 2,826 | 1 | Crowdsourced signal only (no registered tower) |
| Pogonsino | 2,262 | 2 | Crowdsourced signal only (no registered tower) |
| Quirino (Pob.) | 1,177 | 8 | Crowdsourced signal only (no registered tower) |
| San Geronimo (Pob.) | 1,199 | 2 | Crowdsourced signal only (no registered tower) |
| San Pedro (Pob.) | 1,956 | 0 | Dead zone: no towers from any source |
| Sta. Cruz | 999 | 2 | Crowdsourced signal only (no registered tower) |
| Sta. Lucia | 3,378 | 0 | Dead zone: no towers from any source |
| Tuao North | 1,335 | 19 | Crowdsourced signal only (no registered tower) |
| Tuao South | 2,631 | 6 | Crowdsourced signal only (no registered tower) |
| Villa Coloma (Pob.) | 4,114 | 6 | Crowdsourced signal only (no registered tower) |
| Villaros | 3,315 | 1 | Crowdsourced signal only (no registered tower) |