Marantao comprises 34 barangays with an estimated population of 19,029. 31 of its barangays (91%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bacayawan | 196 | 0 | Dead zone: no towers from any source |
| Bacong | 178 | 0 | Dead zone: no towers from any source |
| Banga-Pantar | 272 | 0 | Dead zone: no towers from any source |
| Batal-Punud | 1,179 | 0 | Dead zone: no towers from any source |
| Bubong Madanding (Bubong) | 1,026 | 0 | Dead zone: no towers from any source |
| Camalig (Pob.) | 211 | 0 | Dead zone: no towers from any source |
| Camalig Bandara Ingud | 1,990 | 0 | Dead zone: no towers from any source |
| Camalig Bubong | 742 | 0 | Dead zone: no towers from any source |
| Cawayan | 710 | 0 | Dead zone: no towers from any source |
| Cawayan Bacolod | 1,388 | 0 | Dead zone: no towers from any source |
| Cawayan Kalaw | 1,140 | 0 | Dead zone: no towers from any source |
| Cawayan Linuk | 165 | 0 | Dead zone: no towers from any source |
| Daanaingud | 183 | 0 | Dead zone: no towers from any source |
| Ilian | 526 | 0 | Dead zone: no towers from any source |
| Inudaran Campong | 965 | 0 | Dead zone: no towers from any source |
| Inudaran Loway | 568 | 0 | Dead zone: no towers from any source |
| Inudaran Lumbac | 461 | 0 | Dead zone: no towers from any source |
| Kialdan | 165 | 0 | Dead zone: no towers from any source |
| Lubo | 42 | 0 | Dead zone: no towers from any source |
| Lumbac Kialdan | 109 | 0 | Dead zone: no towers from any source |
| Mantapoli | 514 | 0 | Dead zone: no towers from any source |
| Matampay | 517 | 0 | Dead zone: no towers from any source |
| Maul | 78 | 0 | Dead zone: no towers from any source |
| Maul Ilian | 1,138 | 0 | Dead zone: no towers from any source |
| Maul Lumbaca Ingud | 1,050 | 0 | Dead zone: no towers from any source |
| Nataron | 464 | 0 | Dead zone: no towers from any source |
| Pagalongan Bacayawan | 664 | 1 | Crowdsourced signal only (no registered tower) |
| Palao | 348 | 0 | Dead zone: no towers from any source |
| Pataimas | 104 | 0 | Dead zone: no towers from any source |
| Poblacion | 326 | 2 | Crowdsourced signal only (no registered tower) |
| Poona Marantao | 924 | 2 | Crowdsourced signal only (no registered tower) |
| Punud Proper | 157 | 0 | Dead zone: no towers from any source |
| Tacub | 432 | 0 | Dead zone: no towers from any source |
| Tuca Kialdan | 97 | 0 | Dead zone: no towers from any source |