Santol comprises 11 barangays with an estimated population of 16,301. 10 of its barangays (91%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Corrooy | 2,637 | 3 | Crowdsourced signal only (no registered tower) |
| Lettac Norte | 1,445 | 0 | Dead zone: no towers from any source |
| Lettac Sur | 1,755 | 0 | Dead zone: no towers from any source |
| Mangaan | 951 | 0 | Dead zone: no towers from any source |
| Paagan | 2,783 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,410 | 0 | Dead zone: no towers from any source |
| Puguil | 1,679 | 0 | Dead zone: no towers from any source |
| Ramot | 755 | 0 | Dead zone: no towers from any source |
| Sapdaan | 272 | 0 | Dead zone: no towers from any source |
| Sasaba | 551 | 0 | Dead zone: no towers from any source |
| Tubaday | 1,063 | 0 | Dead zone: no towers from any source |