Guindulman comprises 19 barangays with an estimated population of 26,822. 8 of its barangays (42%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Basdio | 1,421 | 4 | Crowdsourced signal only (no registered tower) |
| Bato | 1,160 | 0 | Dead zone: no towers from any source |
| Bayong | 1,224 | 3 | Crowdsourced signal only (no registered tower) |
| Biabas | 1,698 | 7 | Crowdsourced signal only (no registered tower) |
| Bulawan | 773 | 2 | Crowdsourced signal only (no registered tower) |
| Cabantian | 1,005 | 10 | Crowdsourced signal only (no registered tower) |
| Canhaway | 2,824 | 0 | Dead zone: no towers from any source |
| Cansiwang | 877 | 0 | Dead zone: no towers from any source |
| Casbu | 849 | 2 | Crowdsourced signal only (no registered tower) |
| Catungawan Norte | 836 | 0 | Dead zone: no towers from any source |
| Catungawan Sur | 2,079 | 0 | Dead zone: no towers from any source |
| Guinacot | 1,387 | 0 | Dead zone: no towers from any source |
| Guio-ang | 2,406 | 2 | Crowdsourced signal only (no registered tower) |
| Lombog | 634 | 0 | Dead zone: no towers from any source |
| Mayuga | 2,850 | 4 | Crowdsourced signal only (no registered tower) |
| Sawang (Pob.) | 1,126 | 3 | Crowdsourced signal only (no registered tower) |
| Tabajan (Pob.) | 1,656 | 0 | Dead zone: no towers from any source |
| Tabunok | 897 | 2 | Crowdsourced signal only (no registered tower) |
| Trinidad | 1,120 | 1 | Crowdsourced signal only (no registered tower) |