Hermosa comprises 23 barangays with an estimated population of 120,884. 3 of its barangays (13%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| A. Rivera (Pob.) | 56 | 2 | Crowdsourced signal only (no registered tower) |
| Almacen | 692 | 0 | Dead zone: no towers from any source |
| Bacong | 10,990 | 14 | Crowdsourced signal only (no registered tower) |
| Balsic | 5,617 | 33 | Crowdsourced signal only (no registered tower) |
| Bamban | 9,337 | 11 | Crowdsourced signal only (no registered tower) |
| Burgos-Soliman (Pob.) | 25 | 2 | Crowdsourced signal only (no registered tower) |
| Cataning (Pob.) | 3,750 | 9 | Crowdsourced signal only (no registered tower) |
| Culis | 5,620 | 9 | Crowdsourced signal only (no registered tower) |
| Daungan (Pob.) | 185 | 0 | Dead zone: no towers from any source |
| Judge Roman Cruz Sr. (Mandama) | 8,527 | 14 | Crowdsourced signal only (no registered tower) |
| Mabiga | 8,737 | 17 | Crowdsourced signal only (no registered tower) |
| Mabuco | 6,760 | 8 | Crowdsourced signal only (no registered tower) |
| Maite | 14,678 | 8 | Crowdsourced signal only (no registered tower) |
| Mambog - Mandama | 6,067 | 7 | Crowdsourced signal only (no registered tower) |
| Palihan | 19,454 | 43 | Crowdsourced signal only (no registered tower) |
| Pandatung | 2,256 | 1 | Crowdsourced signal only (no registered tower) |
| Pulo | 916 | 2 | Crowdsourced signal only (no registered tower) |
| Saba | 1,175 | 1 | Crowdsourced signal only (no registered tower) |
| Sacrifice Valley | 879 | 11 | Crowdsourced signal only (no registered tower) |
| San Pedro (Pob.) | 2,572 | 1 | Crowdsourced signal only (no registered tower) |
| Santo Cristo (Pob.) | 1,017 | 11 | Crowdsourced signal only (no registered tower) |
| Sumalo | 353 | 0 | Dead zone: no towers from any source |
| Tipo | 11,221 | 40 | Crowdsourced signal only (no registered tower) |