Tampilisan comprises 20 barangays with an estimated population of 29,623. 13 of its barangays (65%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balacbaan | 146 | 0 | Dead zone: no towers from any source |
| Banbanan | 435 | 0 | Dead zone: no towers from any source |
| Barili | 5,072 | 0 | Dead zone: no towers from any source |
| Cabong | 72 | 0 | Dead zone: no towers from any source |
| Camul | 1,779 | 2 | Crowdsourced signal only (no registered tower) |
| Farmington | 808 | 0 | Dead zone: no towers from any source |
| Galingon | 828 | 2 | Crowdsourced signal only (no registered tower) |
| Lawaan | 2,633 | 0 | Dead zone: no towers from any source |
| Lumbayao | 1,415 | 1 | Crowdsourced signal only (no registered tower) |
| Malila-t | 826 | 0 | Dead zone: no towers from any source |
| Molos | 2,070 | 4 | Crowdsourced signal only (no registered tower) |
| New Dapitan | 1,218 | 0 | Dead zone: no towers from any source |
| Poblacion (Tampilisan) | 4,368 | 7 | Crowdsourced signal only (no registered tower) |
| Sandayong | 485 | 0 | Dead zone: no towers from any source |
| Santo Niño | 2,871 | 2 | Crowdsourced signal only (no registered tower) |
| Situbo | 1,380 | 0 | Dead zone: no towers from any source |
| Tilubog | 378 | 0 | Dead zone: no towers from any source |
| Tininggaan | 820 | 0 | Dead zone: no towers from any source |
| Tubod | 231 | 0 | Dead zone: no towers from any source |
| Znac | 1,788 | 1 | Crowdsourced signal only (no registered tower) |