Sarangani comprises 12 barangays with an estimated population of 25,957. 12 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Batuganding | 4,332 | 0 | Dead zone: no towers from any source |
| Camahual | 1,334 | 0 | Dead zone: no towers from any source |
| Camalig | 788 | 0 | Dead zone: no towers from any source |
| Gomtago | 1,077 | 0 | Dead zone: no towers from any source |
| Konel | 2,718 | 0 | Dead zone: no towers from any source |
| Laker (Sarangani Sur) | 1,460 | 0 | Dead zone: no towers from any source |
| Lipol | 2,730 | 0 | Dead zone: no towers from any source |
| Mabila (Pob.) | 3,456 | 0 | Dead zone: no towers from any source |
| Patuco (Sarangani Norte) | 4,034 | 0 | Dead zone: no towers from any source |
| Tagen | 2,217 | 0 | Dead zone: no towers from any source |
| Tinina | 1,157 | 0 | Dead zone: no towers from any source |
| Tucal | 654 | 0 | Dead zone: no towers from any source |