Alcoy comprises 8 barangays with an estimated population of 14,728. 2 of its barangays (25%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Atabay | 1,214 | 2 | Crowdsourced signal only (no registered tower) |
| Daan-Lungsod | 1,235 | 8 | Crowdsourced signal only (no registered tower) |
| Guiwang | 823 | 1 | Crowdsourced signal only (no registered tower) |
| Nug-as | 4,714 | 0 | Dead zone: no towers from any source |
| Pasol | 1,086 | 6 | Crowdsourced signal only (no registered tower) |
| Poblacion | 3,047 | 3 | Crowdsourced signal only (no registered tower) |
| Pugalo | 2,089 | 4 | Crowdsourced signal only (no registered tower) |
| San Agustin | 520 | 0 | Dead zone: no towers from any source |