Magallanes comprises 34 barangays with an estimated population of 29,600. 33 of its barangays (97%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Aguada Norte | 719 | 0 | Dead zone: no towers from any source |
| Aguada Sur | 767 | 0 | Dead zone: no towers from any source |
| Anibong | 387 | 0 | Dead zone: no towers from any source |
| Bacalon | 1,629 | 0 | Dead zone: no towers from any source |
| Bacolod | 95 | 0 | Dead zone: no towers from any source |
| Banacud | 1,516 | 0 | Dead zone: no towers from any source |
| Behia | 1,364 | 2 | Crowdsourced signal only (no registered tower) |
| Biga | 815 | 0 | Dead zone: no towers from any source |
| Binisitahan del Norte | 494 | 0 | Dead zone: no towers from any source |
| Binisitahan del Sur | 369 | 0 | Dead zone: no towers from any source |
| Biton | 1,150 | 0 | Dead zone: no towers from any source |
| Bulala | 270 | 0 | Dead zone: no towers from any source |
| Busay | 698 | 0 | Dead zone: no towers from any source |
| Caditaan | 3,747 | 0 | Dead zone: no towers from any source |
| Cagbolo | 923 | 0 | Dead zone: no towers from any source |
| Cagtalaba | 443 | 0 | Dead zone: no towers from any source |
| Cawit Extension | 858 | 0 | Dead zone: no towers from any source |
| Cawit Proper | 590 | 0 | Dead zone: no towers from any source |
| Ginangra | 763 | 0 | Dead zone: no towers from any source |
| Hubo | 589 | 0 | Dead zone: no towers from any source |
| Incarizan | 1,224 | 0 | Dead zone: no towers from any source |
| Lapinig | 370 | 0 | Dead zone: no towers from any source |
| Magsaysay | 333 | 0 | Dead zone: no towers from any source |
| Malbog | 827 | 0 | Dead zone: no towers from any source |
| Pantalan | 403 | 0 | Dead zone: no towers from any source |
| Pawik | 352 | 0 | Dead zone: no towers from any source |
| Pili | 1,663 | 0 | Dead zone: no towers from any source |
| Poblacion | 214 | 0 | Dead zone: no towers from any source |
| Salvacion | 832 | 0 | Dead zone: no towers from any source |
| Santa Elena | 847 | 0 | Dead zone: no towers from any source |
| Siuton | 1,791 | 0 | Dead zone: no towers from any source |
| Tagas | 408 | 0 | Dead zone: no towers from any source |
| Tulatula Norte | 1,645 | 0 | Dead zone: no towers from any source |
| Tulatula Sur | 505 | 0 | Dead zone: no towers from any source |