Glan comprises 31 barangays with an estimated population of 114,161. 19 of its barangays (61%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Baliton | 4,997 | 0 | Dead zone: no towers from any source |
| Batotuling | 1,419 | 0 | Dead zone: no towers from any source |
| Batulaki | 1,338 | 0 | Dead zone: no towers from any source |
| Big Margus | 5,697 | 0 | Dead zone: no towers from any source |
| Burias | 4,613 | 2 | Crowdsourced signal only (no registered tower) |
| Cablalan | 3,402 | 0 | Dead zone: no towers from any source |
| Calabanit | 4,874 | 5 | Crowdsourced signal only (no registered tower) |
| Calpidong | 2,960 | 0 | Dead zone: no towers from any source |
| Congan | 2,780 | 0 | Dead zone: no towers from any source |
| Cross | 3,163 | 2 | Crowdsourced signal only (no registered tower) |
| Datalbukay | 1,874 | 0 | Dead zone: no towers from any source |
| E. Alegado | 4,145 | 0 | Dead zone: no towers from any source |
| Glan Padidu | 5,756 | 0 | Dead zone: no towers from any source |
| Gumasa | 2,689 | 6 | Crowdsourced signal only (no registered tower) |
| Ilaya | 4,248 | 1 | Crowdsourced signal only (no registered tower) |
| Kaltuad | 3,247 | 1 | Crowdsourced signal only (no registered tower) |
| Kapatan | 4,777 | 1 | Crowdsourced signal only (no registered tower) |
| Lago | 1,780 | 0 | Dead zone: no towers from any source |
| Laguimit | 6,723 | 1 | Crowdsourced signal only (no registered tower) |
| Mudan | 2,795 | 0 | Dead zone: no towers from any source |
| New Aklan | 1,740 | 0 | Dead zone: no towers from any source |
| Pangyan | 7,797 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion | 4,338 | 10 | Crowdsourced signal only (no registered tower) |
| Rio del Pilar | 748 | 0 | Dead zone: no towers from any source |
| San Jose | 1,747 | 0 | Dead zone: no towers from any source |
| San Vicente | 5,269 | 0 | Dead zone: no towers from any source |
| Small Margus | 2,024 | 0 | Dead zone: no towers from any source |
| Sufatubo | 3,670 | 0 | Dead zone: no towers from any source |
| Taluya | 3,973 | 3 | Crowdsourced signal only (no registered tower) |
| Tango | 2,891 | 0 | Dead zone: no towers from any source |
| Tapon | 6,687 | 1 | Crowdsourced signal only (no registered tower) |