Jagna comprises 33 barangays with an estimated population of 29,983. 14 of its barangays (42%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alejawan | 876 | 2 | Crowdsourced signal only (no registered tower) |
| Balili | 1,440 | 0 | Dead zone: no towers from any source |
| Boctol | 924 | 0 | Dead zone: no towers from any source |
| Bunga Ilaya | 509 | 1 | Crowdsourced signal only (no registered tower) |
| Bunga Mar | 1,133 | 0 | Dead zone: no towers from any source |
| Buyog | 510 | 0 | Dead zone: no towers from any source |
| Cabunga-an | 1,192 | 0 | Dead zone: no towers from any source |
| Calabacita | 856 | 0 | Dead zone: no towers from any source |
| Cambugason | 1,120 | 1 | Crowdsourced signal only (no registered tower) |
| Can-ipol | 587 | 2 | Crowdsourced signal only (no registered tower) |
| Can-uba | 96 | 2 | Crowdsourced signal only (no registered tower) |
| Can-upao | 1,539 | 5 | Crowdsourced signal only (no registered tower) |
| Canjulao | 2,536 | 0 | Dead zone: no towers from any source |
| Cantagay | 558 | 1 | Crowdsourced signal only (no registered tower) |
| Cantuyoc | 886 | 0 | Dead zone: no towers from any source |
| Faraon | 662 | 0 | Dead zone: no towers from any source |
| Ipil | 275 | 0 | Dead zone: no towers from any source |
| Kinagbaan | 507 | 2 | Crowdsourced signal only (no registered tower) |
| Laca | 410 | 0 | Dead zone: no towers from any source |
| Larapan | 590 | 4 | Crowdsourced signal only (no registered tower) |
| Lonoy | 1,177 | 1 | Crowdsourced signal only (no registered tower) |
| Looc | 850 | 4 | Crowdsourced signal only (no registered tower) |
| Malbog | 1,403 | 1 | Crowdsourced signal only (no registered tower) |
| Mayana | 1,421 | 0 | Dead zone: no towers from any source |
| Naatang | 454 | 1 | Crowdsourced signal only (no registered tower) |
| Nausok | 273 | 0 | Dead zone: no towers from any source |
| Odiong | 930 | 0 | Dead zone: no towers from any source |
| Pagina | 1,156 | 1 | Crowdsourced signal only (no registered tower) |
| Pangdan | 888 | 4 | Crowdsourced signal only (no registered tower) |
| Poblacion (Pondol) | 994 | 6 | Crowdsourced signal only (no registered tower) |
| Tejero | 1,414 | 7 | Crowdsourced signal only (no registered tower) |
| Tubod Mar | 561 | 1 | Crowdsourced signal only (no registered tower) |
| Tubod Monte | 1,256 | 3 | Crowdsourced signal only (no registered tower) |