Villasis comprises 21 barangays with an estimated population of 79,218. 6 of its barangays (29%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Amamperez | 6,302 | 0 | Dead zone: no towers from any source |
| Bacag | 5,067 | 42 | Crowdsourced signal only (no registered tower) |
| Barangobong | 9,463 | 1 | Crowdsourced signal only (no registered tower) |
| Barraca | 1,727 | 1 | Crowdsourced signal only (no registered tower) |
| Capulaan | 7,078 | 0 | Dead zone: no towers from any source |
| Caramutan | 4,544 | 13 | Crowdsourced signal only (no registered tower) |
| La Paz | 1,646 | 0 | Dead zone: no towers from any source |
| Labit | 1,005 | 0 | Dead zone: no towers from any source |
| Lipay | 7,156 | 14 | Crowdsourced signal only (no registered tower) |
| Lomboy | 2,234 | 4 | Crowdsourced signal only (no registered tower) |
| Piaz (Plaza) | 5,698 | 1 | Crowdsourced signal only (no registered tower) |
| Puelay | 3,511 | 6 | Crowdsourced signal only (no registered tower) |
| San Blas | 2,432 | 8 | Crowdsourced signal only (no registered tower) |
| San Nicolas | 2,293 | 6 | Crowdsourced signal only (no registered tower) |
| Tombod | 830 | 2 | Crowdsourced signal only (no registered tower) |
| Unzad | 6,297 | 4 | Crowdsourced signal only (no registered tower) |
| Zone I (Pob.) | 2,591 | 3 | Crowdsourced signal only (no registered tower) |
| Zone II (Pob.) | 1,891 | 3 | Crowdsourced signal only (no registered tower) |
| Zone III (Pob.) | 1,236 | 0 | Dead zone: no towers from any source |
| Zone IV (Pob.) | 1,967 | 0 | Dead zone: no towers from any source |
| Zone V (Pob.) | 4,250 | 4 | Crowdsourced signal only (no registered tower) |