Kolambugan comprises 26 barangays with an estimated population of 27,563. 12 of its barangays (46%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Austin Heights | 363 | 4 | Crowdsourced signal only (no registered tower) |
| Baybay | 2,745 | 2 | Crowdsourced signal only (no registered tower) |
| Bubong | 1,803 | 0 | Dead zone: no towers from any source |
| Caromatan | 665 | 1 | Crowdsourced signal only (no registered tower) |
| Inudaran | 693 | 0 | Dead zone: no towers from any source |
| Kulasihan | 964 | 3 | Crowdsourced signal only (no registered tower) |
| Libertad | 2,151 | 1 | Crowdsourced signal only (no registered tower) |
| Lumbac | 1,845 | 0 | Dead zone: no towers from any source |
| Manga | 1,022 | 1 | Crowdsourced signal only (no registered tower) |
| Matampay | 1,448 | 0 | Dead zone: no towers from any source |
| Mukas | 1,129 | 17 | Crowdsourced signal only (no registered tower) |
| Muntay | 2,321 | 4 | Crowdsourced signal only (no registered tower) |
| Pagalungan | 65 | 0 | Dead zone: no towers from any source |
| Palao | 151 | 0 | Dead zone: no towers from any source |
| Pantaon | 388 | 0 | Dead zone: no towers from any source |
| Pantar | 918 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,996 | 9 | Crowdsourced signal only (no registered tower) |
| Rebucon | 822 | 2 | Crowdsourced signal only (no registered tower) |
| Riverside | 1,063 | 1 | Crowdsourced signal only (no registered tower) |
| San Roque | 140 | 0 | Dead zone: no towers from any source |
| Santo Niño | 73 | 0 | Dead zone: no towers from any source |
| Simbuco | 791 | 5 | Crowdsourced signal only (no registered tower) |
| Small Banisilan | 63 | 0 | Dead zone: no towers from any source |
| Sudlon | 661 | 0 | Dead zone: no towers from any source |
| Tabigue | 648 | 4 | Crowdsourced signal only (no registered tower) |
| Titunod | 2,635 | 2 | Crowdsourced signal only (no registered tower) |