Don Victoriano Chiongbian (Don Mariano Marcos) comprises 11 barangays with an estimated population of 7,172. 9 of its barangays (82%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagong Clarin | 430 | 0 | Dead zone: no towers from any source |
| Gandawan | 523 | 0 | Dead zone: no towers from any source |
| Lake Duminagat | 499 | 0 | Dead zone: no towers from any source |
| Lalud | 1,220 | 1 | Crowdsourced signal only (no registered tower) |
| Lampasan | 691 | 0 | Dead zone: no towers from any source |
| Liboron | 388 | 0 | Dead zone: no towers from any source |
| Maramara | 200 | 0 | Dead zone: no towers from any source |
| Napangan | 1,164 | 0 | Dead zone: no towers from any source |
| Nueva Vista (Masawan) | 1,244 | 0 | Dead zone: no towers from any source |
| Petianan | 231 | 0 | Dead zone: no towers from any source |
| Tuno | 582 | 1 | Crowdsourced signal only (no registered tower) |