Hilongos comprises 51 barangays with an estimated population of 64,753. 44 of its barangays (86%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agutayan | 511 | 0 | Dead zone: no towers from any source |
| Atabay | 3,483 | 3 | Crowdsourced signal only (no registered tower) |
| Baas | 717 | 0 | Dead zone: no towers from any source |
| Bagong Lipunan | 945 | 0 | Dead zone: no towers from any source |
| Bagumbayan | 1,248 | 0 | Dead zone: no towers from any source |
| Baliw | 415 | 0 | Dead zone: no towers from any source |
| Bantigue | 179 | 0 | Dead zone: no towers from any source |
| Bon-ot | 338 | 0 | Dead zone: no towers from any source |
| Bung-aw | 1,033 | 0 | Dead zone: no towers from any source |
| Cacao | 250 | 0 | Dead zone: no towers from any source |
| Campina | 590 | 0 | Dead zone: no towers from any source |
| Catandog 1 | 621 | 0 | Dead zone: no towers from any source |
| Catandog 2 | 161 | 0 | Dead zone: no towers from any source |
| Central Barangay (Pob.) | 3,299 | 11 | Crowdsourced signal only (no registered tower) |
| Concepcion | 1,775 | 0 | Dead zone: no towers from any source |
| Eastern Barangay (Pob.) | 3,153 | 0 | Dead zone: no towers from any source |
| Hampangan | 295 | 0 | Dead zone: no towers from any source |
| Himo-aw | 918 | 0 | Dead zone: no towers from any source |
| Hitudpan | 673 | 0 | Dead zone: no towers from any source |
| Imelda Marcos (Pong-on) | 356 | 0 | Dead zone: no towers from any source |
| Kang-iras | 742 | 0 | Dead zone: no towers from any source |
| Kangha-as | 695 | 0 | Dead zone: no towers from any source |
| Lamak | 2,362 | 0 | Dead zone: no towers from any source |
| Libertad | 628 | 0 | Dead zone: no towers from any source |
| Liberty | 2,542 | 0 | Dead zone: no towers from any source |
| Lunang | 2,298 | 0 | Dead zone: no towers from any source |
| Magnangoy | 511 | 1 | Crowdsourced signal only (no registered tower) |
| Manaul | 672 | 0 | Dead zone: no towers from any source |
| Marangog | 1,693 | 0 | Dead zone: no towers from any source |
| Matapay | 1,773 | 1 | Crowdsourced signal only (no registered tower) |
| Naval | 721 | 1 | Crowdsourced signal only (no registered tower) |
| Owak | 673 | 0 | Dead zone: no towers from any source |
| Pa-a | 2,805 | 0 | Dead zone: no towers from any source |
| Pontod | 1,101 | 0 | Dead zone: no towers from any source |
| Proteccion | 1,901 | 0 | Dead zone: no towers from any source |
| San Agustin | 624 | 0 | Dead zone: no towers from any source |
| San Antonio | 1,520 | 0 | Dead zone: no towers from any source |
| San Isidro | 731 | 0 | Dead zone: no towers from any source |
| San Juan | 2,321 | 0 | Dead zone: no towers from any source |
| San Roque | 2,676 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 481 | 0 | Dead zone: no towers from any source |
| Santa Margarita | 2,651 | 0 | Dead zone: no towers from any source |
| Santo Niño | 281 | 0 | Dead zone: no towers from any source |
| Tabunok | 2,455 | 0 | Dead zone: no towers from any source |
| Tagnate | 476 | 0 | Dead zone: no towers from any source |
| Talisay | 2,141 | 1 | Crowdsourced signal only (no registered tower) |
| Tambis | 1,314 | 0 | Dead zone: no towers from any source |
| Tejero | 1,740 | 0 | Dead zone: no towers from any source |
| Tuguipa | 1,107 | 0 | Dead zone: no towers from any source |
| Utanan | 572 | 0 | Dead zone: no towers from any source |
| Western Barangay (Pob.) | 1,586 | 0 | Dead zone: no towers from any source |