Bulusan comprises 24 barangays with an estimated population of 20,572. 17 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 |
|---|---|---|---|
| Bagacay | 1,084 | 0 | Dead zone: no towers from any source |
| Central (Pob.) | 110 | 2 | Crowdsourced signal only (no registered tower) |
| Cogon | 123 | 0 | Dead zone: no towers from any source |
| Dancalan | 1,564 | 0 | Dead zone: no towers from any source |
| Dapdap (Pob.) | 1,052 | 1 | Crowdsourced signal only (no registered tower) |
| Lalud | 599 | 0 | Dead zone: no towers from any source |
| Looban (Pob.) | 47 | 2 | Crowdsourced signal only (no registered tower) |
| Mabuhay (Pob.) | 709 | 0 | Dead zone: no towers from any source |
| Madlawon (Pob.) | 1,074 | 4 | Crowdsourced signal only (no registered tower) |
| Poctol (Pob.) | 68 | 0 | Dead zone: no towers from any source |
| Porog | 492 | 0 | Dead zone: no towers from any source |
| Sabang (Pob.) | 777 | 0 | Dead zone: no towers from any source |
| Salvacion | 275 | 0 | Dead zone: no towers from any source |
| San Antonio | 466 | 0 | Dead zone: no towers from any source |
| San Bernardo | 764 | 0 | Dead zone: no towers from any source |
| San Francisco | 2,584 | 0 | Dead zone: no towers from any source |
| San Isidro | 706 | 0 | Dead zone: no towers from any source |
| San Jose | 1,255 | 0 | Dead zone: no towers from any source |
| San Rafael | 2,581 | 5 | Crowdsourced signal only (no registered tower) |
| San Roque | 1,709 | 5 | Crowdsourced signal only (no registered tower) |
| San Vicente (Buhang) | 665 | 0 | Dead zone: no towers from any source |
| Santa Barbara | 1,300 | 0 | Dead zone: no towers from any source |
| Sapngan (Pob.) | 331 | 1 | Crowdsourced signal only (no registered tower) |
| Tinampo | 237 | 0 | Dead zone: no towers from any source |