Bauan comprises 40 barangays with an estimated population of 81,041. 19 of its barangays (48%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alagao | 1,358 | 0 | Dead zone: no towers from any source |
| Aplaya | 6,678 | 2 | Crowdsourced signal only (no registered tower) |
| As-Is | 2,031 | 3 | Crowdsourced signal only (no registered tower) |
| Bagong Silang | 267 | 0 | Dead zone: no towers from any source |
| Baguilawa | 1,256 | 2 | Crowdsourced signal only (no registered tower) |
| Balayong | 1,804 | 9 | Crowdsourced signal only (no registered tower) |
| Barangay I (Pob.) | 1,262 | 14 | Crowdsourced signal only (no registered tower) |
| Barangay II (Pob.) | 2,889 | 5 | Crowdsourced signal only (no registered tower) |
| Barangay III (Pob.) | 1,464 | 8 | Crowdsourced signal only (no registered tower) |
| Barangay IV (Pob.) | 2,537 | 8 | Crowdsourced signal only (no registered tower) |
| Bolo | 3,940 | 2 | Crowdsourced signal only (no registered tower) |
| Colvo | 164 | 0 | Dead zone: no towers from any source |
| Cupang | 2,070 | 4 | Crowdsourced signal only (no registered tower) |
| Durungao | 1,773 | 0 | Dead zone: no towers from any source |
| Gulibay | 1,428 | 1 | Crowdsourced signal only (no registered tower) |
| Inicbulan | 3,067 | 0 | Dead zone: no towers from any source |
| Locloc | 1,598 | 0 | Dead zone: no towers from any source |
| Magalang-Galang | 234 | 0 | Dead zone: no towers from any source |
| Malindig | 251 | 0 | Dead zone: no towers from any source |
| Manalupong | 1,201 | 0 | Dead zone: no towers from any source |
| Manghinao Proper | 8,621 | 32 | Crowdsourced signal only (no registered tower) |
| Manghinao Uno | 2,431 | 5 | Crowdsourced signal only (no registered tower) |
| New Danglayan | 473 | 0 | Dead zone: no towers from any source |
| Orense | 540 | 0 | Dead zone: no towers from any source |
| Pitugo | 543 | 0 | Dead zone: no towers from any source |
| Rizal | 875 | 0 | Dead zone: no towers from any source |
| Sampaguita | 571 | 1 | Crowdsourced signal only (no registered tower) |
| San Agustin | 1,033 | 0 | Dead zone: no towers from any source |
| San Andres Proper | 1,317 | 4 | Crowdsourced signal only (no registered tower) |
| San Andres Uno | 473 | 0 | Dead zone: no towers from any source |
| San Diego | 901 | 0 | Dead zone: no towers from any source |
| San Miguel | 2,430 | 11 | Crowdsourced signal only (no registered tower) |
| San Pablo | 709 | 0 | Dead zone: no towers from any source |
| San Pedro | 1,954 | 3 | Crowdsourced signal only (no registered tower) |
| San Roque | 9,546 | 22 | Crowdsourced signal only (no registered tower) |
| San Teodoro | 2,813 | 3 | Crowdsourced signal only (no registered tower) |
| San Vicente | 499 | 0 | Dead zone: no towers from any source |
| Santa Maria | 4,165 | 7 | Crowdsourced signal only (no registered tower) |
| Santo Domingo | 567 | 0 | Dead zone: no towers from any source |
| Sinala | 3,308 | 1 | Crowdsourced signal only (no registered tower) |