Ivisan comprises 15 barangays with an estimated population of 27,906. 7 of its barangays (47%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agmalobo | 970 | 0 | Dead zone: no towers from any source |
| Agustin Navarra | 1,030 | 0 | Dead zone: no towers from any source |
| Balaring | 1,162 | 0 | Dead zone: no towers from any source |
| Basiao | 1,916 | 0 | Dead zone: no towers from any source |
| Cabugao | 1,446 | 0 | Dead zone: no towers from any source |
| Cudian | 1,613 | 3 | Crowdsourced signal only (no registered tower) |
| Ilaya-Ivisan | 3,654 | 0 | Dead zone: no towers from any source |
| Malocloc Norte | 1,870 | 7 | Crowdsourced signal only (no registered tower) |
| Malocloc Sur | 2,578 | 2 | Crowdsourced signal only (no registered tower) |
| Matnog | 1,249 | 0 | Dead zone: no towers from any source |
| Mianay | 1,855 | 5 | Crowdsourced signal only (no registered tower) |
| Ondoy | 1,933 | 3 | Crowdsourced signal only (no registered tower) |
| Poblacion Norte | 2,499 | 4 | Crowdsourced signal only (no registered tower) |
| Poblacion Sur | 3,073 | 3 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 1,058 | 5 | Crowdsourced signal only (no registered tower) |