Itbayat comprises 5 barangays with an estimated population of 2,310. 4 of its barangays (80%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Raele | 446 | 0 | Dead zone: no towers from any source |
| San Rafael (Idiang) | 560 | 0 | Dead zone: no towers from any source |
| Santa Lucia (Kauhauhasan) | 393 | 0 | Dead zone: no towers from any source |
| Santa Maria (Marapuy) | 413 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Rosa (Kaynatuan) | 498 | 0 | Dead zone: no towers from any source |