Dupax del Sur comprises 19 barangays with an estimated population of 22,745. 12 of its barangays (63%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Abaca | 637 | 0 | Dead zone: no towers from any source |
| Bagumbayan | 2,169 | 2 | Crowdsourced signal only (no registered tower) |
| Balsain | 671 | 2 | Crowdsourced signal only (no registered tower) |
| Banila | 852 | 0 | Dead zone: no towers from any source |
| Biruk | 1,615 | 0 | Dead zone: no towers from any source |
| Canabay | 2,927 | 0 | Dead zone: no towers from any source |
| Carolotan | 351 | 0 | Dead zone: no towers from any source |
| Domang | 556 | 1 | Crowdsourced signal only (no registered tower) |
| Dopaj | 1,109 | 1 | Crowdsourced signal only (no registered tower) |
| Gabut | 2,560 | 7 | Crowdsourced signal only (no registered tower) |
| Ganao (Lingad) | 918 | 0 | Dead zone: no towers from any source |
| Kimbutan | 1,389 | 0 | Dead zone: no towers from any source |
| Kinabuan | 806 | 0 | Dead zone: no towers from any source |
| Lukidnon | 609 | 0 | Dead zone: no towers from any source |
| Mangayang | 1,401 | 1 | Crowdsourced signal only (no registered tower) |
| Palabotan | 1,203 | 0 | Dead zone: no towers from any source |
| Sanguit | 1,042 | 0 | Dead zone: no towers from any source |
| Santa Maria | 1,033 | 1 | Crowdsourced signal only (no registered tower) |
| Talbek | 897 | 0 | Dead zone: no towers from any source |