Clarin comprises 24 barangays with an estimated population of 22,761. 18 of its barangays (75%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bacani | 2,496 | 4 | Crowdsourced signal only (no registered tower) |
| Bogtongbod | 593 | 0 | Dead zone: no towers from any source |
| Bonbon | 2,308 | 0 | Dead zone: no towers from any source |
| Bontud | 635 | 0 | Dead zone: no towers from any source |
| Buacao | 565 | 0 | Dead zone: no towers from any source |
| Buangan | 550 | 0 | Dead zone: no towers from any source |
| Cabog | 516 | 0 | Dead zone: no towers from any source |
| Caboy | 287 | 2 | Crowdsourced signal only (no registered tower) |
| Caluwasan | 91 | 0 | Dead zone: no towers from any source |
| Candajec | 717 | 1 | Crowdsourced signal only (no registered tower) |
| Cantoyoc | 497 | 1 | Crowdsourced signal only (no registered tower) |
| Comaang | 932 | 0 | Dead zone: no towers from any source |
| Danahao | 803 | 0 | Dead zone: no towers from any source |
| Katipunan | 138 | 0 | Dead zone: no towers from any source |
| Lajog | 1,946 | 0 | Dead zone: no towers from any source |
| Mataub | 955 | 1 | Crowdsourced signal only (no registered tower) |
| Nahawan | 2,865 | 0 | Dead zone: no towers from any source |
| Poblacion Centro | 2,147 | 0 | Dead zone: no towers from any source |
| Poblacion Norte | 782 | 0 | Dead zone: no towers from any source |
| Poblacion Sur | 877 | 1 | Crowdsourced signal only (no registered tower) |
| Tangaran | 779 | 0 | Dead zone: no towers from any source |
| Tontunan | 154 | 0 | Dead zone: no towers from any source |
| Tubod | 896 | 0 | Dead zone: no towers from any source |
| Villaflor | 232 | 0 | Dead zone: no towers from any source |