Bucay comprises 21 barangays with an estimated population of 20,833. 17 of its barangays (81%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Abang | 1,132 | 0 | Dead zone: no towers from any source |
| Bangbangcag | 1,773 | 0 | Dead zone: no towers from any source |
| Bangcagan | 1,162 | 0 | Dead zone: no towers from any source |
| Banglolao | 355 | 0 | Dead zone: no towers from any source |
| Bugbog | 996 | 0 | Dead zone: no towers from any source |
| Calao | 547 | 0 | Dead zone: no towers from any source |
| Dugong | 1,522 | 0 | Dead zone: no towers from any source |
| Labon | 775 | 0 | Dead zone: no towers from any source |
| Layugan | 1,374 | 0 | Dead zone: no towers from any source |
| Madalipay | 364 | 6 | Crowdsourced signal only (no registered tower) |
| North Poblacion | 1,359 | 1 | Crowdsourced signal only (no registered tower) |
| Pagala | 1,745 | 0 | Dead zone: no towers from any source |
| Pakiling | 794 | 0 | Dead zone: no towers from any source |
| Palaquio | 1,320 | 0 | Dead zone: no towers from any source |
| Patoc | 1,042 | 0 | Dead zone: no towers from any source |
| Quimloong | 961 | 0 | Dead zone: no towers from any source |
| Salnec | 270 | 0 | Dead zone: no towers from any source |
| San Miguel | 290 | 0 | Dead zone: no towers from any source |
| Siblong | 910 | 2 | Crowdsourced signal only (no registered tower) |
| South Poblacion | 790 | 1 | Crowdsourced signal only (no registered tower) |
| Tabiog | 1,352 | 0 | Dead zone: no towers from any source |