Catarman (Capital) comprises 55 barangays with an estimated population of 89,330. 39 of its barangays (71%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Acacia (Pob.) | 2,805 | 2 | Crowdsourced signal only (no registered tower) |
| Aguinaldo | 209 | 0 | Dead zone: no towers from any source |
| Airport Village | 1,182 | 0 | Dead zone: no towers from any source |
| Bangkerohan | 3,538 | 2 | Crowdsourced signal only (no registered tower) |
| Baybay | 4,158 | 1 | Crowdsourced signal only (no registered tower) |
| Bocsol | 462 | 0 | Dead zone: no towers from any source |
| Cabayhan | 722 | 0 | Dead zone: no towers from any source |
| Cag-abaca | 3,292 | 0 | Dead zone: no towers from any source |
| Cal-igang | 808 | 0 | Dead zone: no towers from any source |
| Calachuchi (Pob.) | 1,484 | 3 | Crowdsourced signal only (no registered tower) |
| Cawayan | 3,466 | 3 | Crowdsourced signal only (no registered tower) |
| Cervantes | 3,711 | 0 | Dead zone: no towers from any source |
| Cularima | 1,063 | 0 | Dead zone: no towers from any source |
| Daganas | 2,265 | 2 | Crowdsourced signal only (no registered tower) |
| Dalakit (Pob.) | 16,483 | 17 | Crowdsourced signal only (no registered tower) |
| Doña Pulqueria (Himbang) | 724 | 0 | Dead zone: no towers from any source |
| Galutan | 654 | 0 | Dead zone: no towers from any source |
| Gebalagnan (Hibalagnan) | 512 | 0 | Dead zone: no towers from any source |
| Gebulwangan | 360 | 0 | Dead zone: no towers from any source |
| General Malvar | 590 | 0 | Dead zone: no towers from any source |
| Guba | 197 | 0 | Dead zone: no towers from any source |
| Hinatad | 1,085 | 0 | Dead zone: no towers from any source |
| Imelda (Elimbo) | 1,302 | 0 | Dead zone: no towers from any source |
| Ipil-ipil (Pob.) | 459 | 0 | Dead zone: no towers from any source |
| Jose Abad Santos (Pob.) | 650 | 1 | Crowdsourced signal only (no registered tower) |
| Jose P. Rizal (Pob.) | 1,683 | 0 | Dead zone: no towers from any source |
| Kasoy (Pob.) | 740 | 1 | Crowdsourced signal only (no registered tower) |
| Lapu-lapu (Pob.) | 281 | 0 | Dead zone: no towers from any source |
| Liberty | 476 | 0 | Dead zone: no towers from any source |
| Libjo (Binog) | 1,028 | 1 | Crowdsourced signal only (no registered tower) |
| Mabini | 112 | 0 | Dead zone: no towers from any source |
| Mabolo (Pob.) | 61 | 0 | Dead zone: no towers from any source |
| Macagtas | 3,878 | 1 | Crowdsourced signal only (no registered tower) |
| Mckinley | 2,700 | 0 | Dead zone: no towers from any source |
| Molave (Pob.) | 2,545 | 2 | Crowdsourced signal only (no registered tower) |
| Narra (Pob.) | 387 | 0 | Dead zone: no towers from any source |
| New Rizal | 1,487 | 0 | Dead zone: no towers from any source |
| Old Rizal | 957 | 1 | Crowdsourced signal only (no registered tower) |
| Paticua | 1,257 | 0 | Dead zone: no towers from any source |
| Polangi | 3,793 | 1 | Crowdsourced signal only (no registered tower) |
| Quezon | 505 | 0 | Dead zone: no towers from any source |
| Salvacion | 729 | 0 | Dead zone: no towers from any source |
| Sampaguita (Pob.) | 444 | 0 | Dead zone: no towers from any source |
| San Julian | 420 | 0 | Dead zone: no towers from any source |
| San Pascual | 341 | 0 | Dead zone: no towers from any source |
| Santol (Pob.) | 385 | 0 | Dead zone: no towers from any source |
| Somoge | 1,657 | 0 | Dead zone: no towers from any source |
| Talisay (Pob.) | 978 | 0 | Dead zone: no towers from any source |
| Tinowaran | 248 | 0 | Dead zone: no towers from any source |
| Trangue | 60 | 0 | Dead zone: no towers from any source |
| UEP I | 4,051 | 2 | Crowdsourced signal only (no registered tower) |
| UEP II | 810 | 0 | Dead zone: no towers from any source |
| UEP III | 1,214 | 0 | Dead zone: no towers from any source |
| Washington | 2,534 | 0 | Dead zone: no towers from any source |
| Yakal (Pob.) | 1,388 | 4 | Crowdsourced signal only (no registered tower) |