Dauin comprises 23 barangays with an estimated population of 29,407. 6 of its barangays (26%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Anahawan | 550 | 0 | Dead zone: no towers from any source |
| Apo Island | 654 | 1 | Crowdsourced signal only (no registered tower) |
| Bagacay | 426 | 0 | Dead zone: no towers from any source |
| Baslay | 709 | 15 | Crowdsourced signal only (no registered tower) |
| Batuhon Dacu | 540 | 2 | Crowdsourced signal only (no registered tower) |
| Boloc-boloc | 890 | 0 | Dead zone: no towers from any source |
| Bulak | 1,451 | 7 | Crowdsourced signal only (no registered tower) |
| Bunga | 643 | 3 | Crowdsourced signal only (no registered tower) |
| Casile | 548 | 0 | Dead zone: no towers from any source |
| Libjo | 1,058 | 2 | Crowdsourced signal only (no registered tower) |
| Lipayo | 2,827 | 40 | Crowdsourced signal only (no registered tower) |
| Maayongtubig | 4,472 | 12 | Crowdsourced signal only (no registered tower) |
| Mag-aso | 980 | 2 | Crowdsourced signal only (no registered tower) |
| Magsaysay | 1,316 | 0 | Dead zone: no towers from any source |
| Malongcay Dacu | 428 | 0 | Dead zone: no towers from any source |
| Masaplod Norte | 1,211 | 12 | Crowdsourced signal only (no registered tower) |
| Masaplod Sur | 2,316 | 3 | Crowdsourced signal only (no registered tower) |
| Panubtuban | 1,183 | 3 | Crowdsourced signal only (no registered tower) |
| Poblacion I | 1,627 | 4 | Crowdsourced signal only (no registered tower) |
| Poblacion II | 1,766 | 4 | Crowdsourced signal only (no registered tower) |
| Poblacion III | 940 | 4 | Crowdsourced signal only (no registered tower) |
| Tugawe | 1,626 | 3 | Crowdsourced signal only (no registered tower) |
| Tunga-tunga | 1,246 | 2 | Crowdsourced signal only (no registered tower) |