Magallanes comprises 8 barangays with an estimated population of 29,799. 6 of its barangays (75%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Buhang | 6,984 | 0 | Dead zone: no towers from any source |
| Caloc-an | 12,824 | 7 | Crowdsourced signal only (no registered tower) |
| Guiasan | 2,297 | 0 | Dead zone: no towers from any source |
| Marcos | 456 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion | 3,191 | 0 | Dead zone: no towers from any source |
| Santo Niño | 2,070 | 0 | Dead zone: no towers from any source |
| Santo Rosario | 175 | 0 | Dead zone: no towers from any source |
| Taod-oy | 1,802 | 0 | Dead zone: no towers from any source |