Kalilangan comprises 14 barangays with an estimated population of 45,923. 10 of its barangays (71%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Baborawon | 524 | 0 | Dead zone: no towers from any source |
| Bangbang | 728 | 0 | Dead zone: no towers from any source |
| Canituan | 696 | 0 | Dead zone: no towers from any source |
| Kibaning | 357 | 0 | Dead zone: no towers from any source |
| Kinura | 2,084 | 0 | Dead zone: no towers from any source |
| Lampanusan | 4,760 | 1 | Crowdsourced signal only (no registered tower) |
| Maca-opao | 2,468 | 0 | Dead zone: no towers from any source |
| Malinao | 6,853 | 0 | Dead zone: no towers from any source |
| Ninoy Aquino | 4,446 | 1 | Crowdsourced signal only (no registered tower) |
| Pamotolon (Pamotdon) | 3,284 | 0 | Dead zone: no towers from any source |
| Poblacion | 6,389 | 1 | Crowdsourced signal only (no registered tower) |
| Public | 4,031 | 0 | Dead zone: no towers from any source |
| San Vicente Ferrer | 2,324 | 0 | Dead zone: no towers from any source |
| West Poblacion | 6,979 | 1 | Crowdsourced signal only (no registered tower) |