Cawayan comprises 37 barangays with an estimated population of 58,329. 36 of its barangays (97%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Begia | 2,264 | 0 | Dead zone: no towers from any source |
| Cabayugan | 198 | 0 | Dead zone: no towers from any source |
| Cabungahan | 769 | 0 | Dead zone: no towers from any source |
| Calapayan | 2,480 | 0 | Dead zone: no towers from any source |
| Calumpang | 1,558 | 0 | Dead zone: no towers from any source |
| Chico Island | 888 | 0 | Dead zone: no towers from any source |
| Dalipe | 3,846 | 0 | Dead zone: no towers from any source |
| Divisoria | 2,738 | 0 | Dead zone: no towers from any source |
| Gilotongan | 1,393 | 0 | Dead zone: no towers from any source |
| Guiom | 1,273 | 0 | Dead zone: no towers from any source |
| Iraya | 2,346 | 0 | Dead zone: no towers from any source |
| Itombato | 1,511 | 0 | Dead zone: no towers from any source |
| Lague-lague | 677 | 0 | Dead zone: no towers from any source |
| Libertad | 1,012 | 0 | Dead zone: no towers from any source |
| Looc | 1,929 | 0 | Dead zone: no towers from any source |
| Mactan | 1,265 | 0 | Dead zone: no towers from any source |
| Madbad | 1,016 | 0 | Dead zone: no towers from any source |
| Mahayahay | 2,734 | 0 | Dead zone: no towers from any source |
| Maihao | 630 | 1 | Crowdsourced signal only (no registered tower) |
| Malbug | 1,809 | 0 | Dead zone: no towers from any source |
| Naro | 1,847 | 0 | Dead zone: no towers from any source |
| Palobandera | 2,190 | 0 | Dead zone: no towers from any source |
| Pananawan | 385 | 0 | Dead zone: no towers from any source |
| Peña Island | 511 | 0 | Dead zone: no towers from any source |
| Pin-As | 5,031 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,981 | 0 | Dead zone: no towers from any source |
| Pulot | 610 | 0 | Dead zone: no towers from any source |
| Punta Batsan | 376 | 0 | Dead zone: no towers from any source |
| R.M. Magbalon (Bebinan) | 673 | 0 | Dead zone: no towers from any source |
| Recodo | 1,421 | 0 | Dead zone: no towers from any source |
| San Jose | 665 | 0 | Dead zone: no towers from any source |
| San Vicente | 1,178 | 0 | Dead zone: no towers from any source |
| Taberna | 834 | 0 | Dead zone: no towers from any source |
| Talisay | 2,629 | 0 | Dead zone: no towers from any source |
| Tubog | 1,158 | 0 | Dead zone: no towers from any source |
| Tuburan | 2,467 | 0 | Dead zone: no towers from any source |
| Villahermosa | 1,037 | 0 | Dead zone: no towers from any source |