Basista comprises 13 barangays with an estimated population of 43,106. 9 of its barangays (69%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Anambongan | 2,364 | 0 | Dead zone: no towers from any source |
| Bayoyong | 1,402 | 0 | Dead zone: no towers from any source |
| Cabeldatan | 5,532 | 0 | Dead zone: no towers from any source |
| Dumpay | 9,581 | 0 | Dead zone: no towers from any source |
| Malimpec East | 1,904 | 0 | Dead zone: no towers from any source |
| Mapolopolo | 3,136 | 0 | Dead zone: no towers from any source |
| Nalneran | 1,058 | 1 | Crowdsourced signal only (no registered tower) |
| Navatat | 2,147 | 0 | Dead zone: no towers from any source |
| Obong | 5,952 | 1 | Crowdsourced signal only (no registered tower) |
| Osmena Sr. | 835 | 0 | Dead zone: no towers from any source |
| Palma | 3,623 | 2 | Crowdsourced signal only (no registered tower) |
| Patacbo | 2,656 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,916 | 4 | Crowdsourced signal only (no registered tower) |