Calatagan comprises 25 barangays with an estimated population of 48,633. 11 of its barangays (44%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagong Silang | 1,526 | 0 | Dead zone: no towers from any source |
| Baha | 1,262 | 0 | Dead zone: no towers from any source |
| Balibago | 2,781 | 10 | Crowdsourced signal only (no registered tower) |
| Balitoc | 2,636 | 3 | Crowdsourced signal only (no registered tower) |
| Barangay 1 (Pob.) | 3,346 | 13 | Crowdsourced signal only (no registered tower) |
| Barangay 2 (Pob.) | 844 | 2 | Crowdsourced signal only (no registered tower) |
| Barangay 3 (Pob.) | 1,140 | 0 | Dead zone: no towers from any source |
| Barangay 4 (Pob.) | 1,822 | 3 | Crowdsourced signal only (no registered tower) |
| Biga | 2,739 | 0 | Dead zone: no towers from any source |
| Bucal | 1,168 | 16 | Crowdsourced signal only (no registered tower) |
| Carlosa | 1,058 | 0 | Dead zone: no towers from any source |
| Carretunan | 1,323 | 4 | Crowdsourced signal only (no registered tower) |
| Encarnacion | 955 | 0 | Dead zone: no towers from any source |
| Gulod | 2,665 | 3 | Crowdsourced signal only (no registered tower) |
| Hukay | 1,686 | 0 | Dead zone: no towers from any source |
| Lucsuhin | 4,273 | 5 | Crowdsourced signal only (no registered tower) |
| Luya | 625 | 0 | Dead zone: no towers from any source |
| Paraiso | 1,389 | 0 | Dead zone: no towers from any source |
| Quilitisan | 2,252 | 2 | Crowdsourced signal only (no registered tower) |
| Real | 1,293 | 2 | Crowdsourced signal only (no registered tower) |
| Sambungan | 1,102 | 0 | Dead zone: no towers from any source |
| Santa Ana | 2,649 | 6 | Crowdsourced signal only (no registered tower) |
| Talibayog | 1,607 | 0 | Dead zone: no towers from any source |
| Talisay | 2,107 | 2 | Crowdsourced signal only (no registered tower) |
| Tanagan | 4,385 | 8 | Crowdsourced signal only (no registered tower) |