Plaridel comprises 33 barangays with an estimated population of 39,181. 30 of its barangays (91%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agunod | 535 | 0 | Dead zone: no towers from any source |
| Bato | 4,675 | 0 | Dead zone: no towers from any source |
| Buena Voluntad | 582 | 0 | Dead zone: no towers from any source |
| Calaca-an | 849 | 0 | Dead zone: no towers from any source |
| Cartagena Proper | 359 | 0 | Dead zone: no towers from any source |
| Catarman | 595 | 0 | Dead zone: no towers from any source |
| Cebulin | 775 | 0 | Dead zone: no towers from any source |
| Clarin | 2,408 | 0 | Dead zone: no towers from any source |
| Danao | 637 | 0 | Dead zone: no towers from any source |
| Deboloc | 155 | 0 | Dead zone: no towers from any source |
| Divisoria | 219 | 0 | Dead zone: no towers from any source |
| Eastern Looc | 151 | 0 | Dead zone: no towers from any source |
| Ilisan | 1,230 | 0 | Dead zone: no towers from any source |
| Katipunan | 279 | 0 | Dead zone: no towers from any source |
| Kauswagan | 1,104 | 0 | Dead zone: no towers from any source |
| Lao Proper | 502 | 1 | Crowdsourced signal only (no registered tower) |
| Lao Santa Cruz | 457 | 0 | Dead zone: no towers from any source |
| Looc Proper | 1,673 | 0 | Dead zone: no towers from any source |
| Mamanga Daku | 4,612 | 0 | Dead zone: no towers from any source |
| Mamanga Gamay | 708 | 0 | Dead zone: no towers from any source |
| Mangidkid | 1,385 | 0 | Dead zone: no towers from any source |
| New Cartagena | 388 | 0 | Dead zone: no towers from any source |
| New Look | 111 | 0 | Dead zone: no towers from any source |
| Northern Poblacion | 429 | 0 | Dead zone: no towers from any source |
| Panalsalan | 5,382 | 2 | Crowdsourced signal only (no registered tower) |
| Puntod | 1,247 | 0 | Dead zone: no towers from any source |
| Quirino | 486 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 731 | 0 | Dead zone: no towers from any source |
| Southern Looc | 2,137 | 0 | Dead zone: no towers from any source |
| Southern Poblacion | 721 | 0 | Dead zone: no towers from any source |
| Tipolo | 1,451 | 0 | Dead zone: no towers from any source |
| Unidos | 614 | 0 | Dead zone: no towers from any source |
| Usocan | 1,594 | 0 | Dead zone: no towers from any source |