Mangatarem comprises 82 barangays with an estimated population of 88,956. 62 of its barangays (76%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Andangin | 1,484 | 1 | Crowdsourced signal only (no registered tower) |
| Arellano Street (Pob.) | 13 | 0 | Dead zone: no towers from any source |
| Bantay | 186 | 0 | Dead zone: no towers from any source |
| Bantocaling | 1,803 | 0 | Dead zone: no towers from any source |
| Baracbac | 1,460 | 5 | Crowdsourced signal only (no registered tower) |
| Bogtong Bolo | 885 | 0 | Dead zone: no towers from any source |
| Bogtong Bunao | 1,424 | 2 | Crowdsourced signal only (no registered tower) |
| Bogtong Centro | 85 | 0 | Dead zone: no towers from any source |
| Bogtong Niog | 1,601 | 1 | Crowdsourced signal only (no registered tower) |
| Bogtong Silag | 2,507 | 1 | Crowdsourced signal only (no registered tower) |
| Buaya | 147 | 0 | Dead zone: no towers from any source |
| Buenlag | 432 | 0 | Dead zone: no towers from any source |
| Bueno | 1,935 | 2 | Crowdsourced signal only (no registered tower) |
| Bunagan | 579 | 0 | Dead zone: no towers from any source |
| Bunlalacao | 1,195 | 0 | Dead zone: no towers from any source |
| Burgos Street (Pob.) | 14 | 0 | Dead zone: no towers from any source |
| Cabaluyan 1st | 114 | 0 | Dead zone: no towers from any source |
| Cabaluyan 2nd | 1,446 | 0 | Dead zone: no towers from any source |
| Cabarabuan | 1,246 | 0 | Dead zone: no towers from any source |
| Cabaruan | 305 | 0 | Dead zone: no towers from any source |
| Cabayaoasan | 1,324 | 0 | Dead zone: no towers from any source |
| Cabayugan | 978 | 0 | Dead zone: no towers from any source |
| Cacaoiten | 813 | 0 | Dead zone: no towers from any source |
| Calomboyan Norte | 2,180 | 0 | Dead zone: no towers from any source |
| Calomboyan Sur | 1,064 | 0 | Dead zone: no towers from any source |
| Calvo (Pob.) | 87 | 0 | Dead zone: no towers from any source |
| Casilagan | 1,832 | 6 | Crowdsourced signal only (no registered tower) |
| Catarataraan | 502 | 0 | Dead zone: no towers from any source |
| Caturay Norte | 651 | 0 | Dead zone: no towers from any source |
| Caturay Sur | 1,109 | 0 | Dead zone: no towers from any source |
| Caviernesan | 3,194 | 0 | Dead zone: no towers from any source |
| Dorongan Ketaket | 454 | 0 | Dead zone: no towers from any source |
| Dorongan Linmansangan | 792 | 0 | Dead zone: no towers from any source |
| Dorongan Punta | 1,653 | 0 | Dead zone: no towers from any source |
| Dorongan Sawat | 2,023 | 0 | Dead zone: no towers from any source |
| Dorongan Valerio | 664 | 0 | Dead zone: no towers from any source |
| General Luna (Pob.) | 59 | 0 | Dead zone: no towers from any source |
| Historia | 546 | 0 | Dead zone: no towers from any source |
| Lawak Langka | 2,244 | 0 | Dead zone: no towers from any source |
| Linmansangan | 1,754 | 0 | Dead zone: no towers from any source |
| Lopez (Pob.) | 106 | 0 | Dead zone: no towers from any source |
| Mabini (Pob.) | 28 | 2 | Crowdsourced signal only (no registered tower) |
| Macarang | 994 | 5 | Crowdsourced signal only (no registered tower) |
| Malabobo | 1,529 | 0 | Dead zone: no towers from any source |
| Malibong | 875 | 0 | Dead zone: no towers from any source |
| Malunec | 827 | 1 | Crowdsourced signal only (no registered tower) |
| Maravilla (Pob.) | 203 | 1 | Crowdsourced signal only (no registered tower) |
| Maravilla-Arellano Ext. (Pob.) | 785 | 0 | Dead zone: no towers from any source |
| Muelang | 654 | 0 | Dead zone: no towers from any source |
| Naguilayan East | 332 | 0 | Dead zone: no towers from any source |
| Naguilayan West | 379 | 0 | Dead zone: no towers from any source |
| Nancasalan | 3,288 | 0 | Dead zone: no towers from any source |
| Niog-Cabison-Bulaney | 829 | 0 | Dead zone: no towers from any source |
| Olegario-Caoile (Pob.) | 49 | 0 | Dead zone: no towers from any source |
| Olo Cacamposan | 1,658 | 2 | Crowdsourced signal only (no registered tower) |
| Olo Cafabrosan | 1,092 | 0 | Dead zone: no towers from any source |
| Olo Cagarlitan | 646 | 0 | Dead zone: no towers from any source |
| Osmeña (Pob.) | 473 | 1 | Crowdsourced signal only (no registered tower) |
| Pacalat | 558 | 0 | Dead zone: no towers from any source |
| Pampano | 3,724 | 0 | Dead zone: no towers from any source |
| Parian | 856 | 0 | Dead zone: no towers from any source |
| Paul | 1,026 | 0 | Dead zone: no towers from any source |
| Peania Pedania (Bedania) | 2,182 | 0 | Dead zone: no towers from any source |
| Pogon-Aniat | 792 | 0 | Dead zone: no towers from any source |
| Pogon-Lomboy (Pob.) | 1,146 | 1 | Crowdsourced signal only (no registered tower) |
| Ponglo-Baleg | 488 | 0 | Dead zone: no towers from any source |
| Ponglo-Muelag | 285 | 0 | Dead zone: no towers from any source |
| Quetegan (Pogon-Baleg) | 3,371 | 3 | Crowdsourced signal only (no registered tower) |
| Quezon (Pob.) | 13 | 0 | Dead zone: no towers from any source |
| Salavante | 1,701 | 0 | Dead zone: no towers from any source |
| Sapang | 778 | 0 | Dead zone: no towers from any source |
| Sonson Ongkit | 5,056 | 2 | Crowdsourced signal only (no registered tower) |
| Suaco | 297 | 0 | Dead zone: no towers from any source |
| Tagac | 752 | 0 | Dead zone: no towers from any source |
| Takipan | 1,854 | 7 | Crowdsourced signal only (no registered tower) |
| Talogtog | 1,063 | 3 | Crowdsourced signal only (no registered tower) |
| Tococ Barikir | 299 | 0 | Dead zone: no towers from any source |
| Torre 1st | 341 | 0 | Dead zone: no towers from any source |
| Torre 2nd | 1,842 | 0 | Dead zone: no towers from any source |
| Torres Bugallon (Pob.) | 595 | 0 | Dead zone: no towers from any source |
| Umangan | 2,333 | 2 | Crowdsourced signal only (no registered tower) |
| Zamora (Pob.) | 73 | 3 | Crowdsourced signal only (no registered tower) |