Santa Catalina comprises 9 barangays with an estimated population of 10,282. 5 of its barangays (56%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Cabaroan | 1,487 | 0 | Dead zone: no towers from any source |
| Cabittaogan | 1,456 | 6 | Crowdsourced signal only (no registered tower) |
| Cabuloan | 878 | 2 | Crowdsourced signal only (no registered tower) |
| Pangada | 472 | 0 | Dead zone: no towers from any source |
| Paratong | 1,124 | 0 | Dead zone: no towers from any source |
| Poblacion | 995 | 1 | Crowdsourced signal only (no registered tower) |
| Sinabaan | 907 | 0 | Dead zone: no towers from any source |
| Subec | 808 | 0 | Dead zone: no towers from any source |
| Tamorong | 2,155 | 1 | Crowdsourced signal only (no registered tower) |