Basco (Capital) comprises 6 barangays with an estimated population of 7,694. 4 of its barangays (67%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Chanarian | 800 | 0 | Dead zone: no towers from any source |
| Ihubok I (Kaychanarianan) | 1,558 | 0 | Dead zone: no towers from any source |
| Ihubok II (Kayvaluganan) | 2,090 | 5 | Crowdsourced signal only (no registered tower) |
| Kayhuvokan | 956 | 0 | Dead zone: no towers from any source |
| San Antonio | 1,902 | 1 | Crowdsourced signal only (no registered tower) |
| San Joaquin | 388 | 0 | Dead zone: no towers from any source |