Boljoon comprises 11 barangays with an estimated population of 14,126. 4 of its barangays (36%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Arbor | 1,058 | 2 | Crowdsourced signal only (no registered tower) |
| Baclayan | 345 | 6 | Crowdsourced signal only (no registered tower) |
| El Pardo | 2,936 | 2 | Crowdsourced signal only (no registered tower) |
| Granada | 1,000 | 2 | Crowdsourced signal only (no registered tower) |
| Lower Becerril | 826 | 9 | Crowdsourced signal only (no registered tower) |
| Lunop | 978 | 0 | Dead zone: no towers from any source |
| Nangka | 602 | 0 | Dead zone: no towers from any source |
| Poblacion | 3,161 | 3 | Crowdsourced signal only (no registered tower) |
| San Antonio | 1,167 | 0 | Dead zone: no towers from any source |
| South Granada | 687 | 2 | Crowdsourced signal only (no registered tower) |
| Upper Becerril | 1,366 | 0 | Dead zone: no towers from any source |