Garchitorena comprises 23 barangays with an estimated population of 19,829. 23 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Ason (Anson) | 956 | 0 | Dead zone: no towers from any source |
| Bahi | 2,118 | 0 | Dead zone: no towers from any source |
| Barangay I (Pob.) | 1,443 | 0 | Dead zone: no towers from any source |
| Barangay II (Pob.) | 767 | 0 | Dead zone: no towers from any source |
| Barangay III (Pob.) | 839 | 0 | Dead zone: no towers from any source |
| Barangay IV (Pob.) | 1,451 | 0 | Dead zone: no towers from any source |
| Binagasbasan | 459 | 0 | Dead zone: no towers from any source |
| Burabod | 312 | 0 | Dead zone: no towers from any source |
| Cagamutan | 342 | 0 | Dead zone: no towers from any source |
| Cagnipa | 476 | 0 | Dead zone: no towers from any source |
| Canlong | 294 | 0 | Dead zone: no towers from any source |
| Dangla | 247 | 0 | Dead zone: no towers from any source |
| Del Pilar | 1,058 | 0 | Dead zone: no towers from any source |
| Denrica | 642 | 0 | Dead zone: no towers from any source |
| Harrison | 1,268 | 0 | Dead zone: no towers from any source |
| Mansangat | 307 | 0 | Dead zone: no towers from any source |
| Pambuhan | 323 | 0 | Dead zone: no towers from any source |
| Sagrada | 1,049 | 0 | Dead zone: no towers from any source |
| Salvacion | 675 | 0 | Dead zone: no towers from any source |
| San Vicente | 2,171 | 0 | Dead zone: no towers from any source |
| Sumaoy | 1,029 | 0 | Dead zone: no towers from any source |
| Tamiawon | 543 | 0 | Dead zone: no towers from any source |
| Toytoy | 1,060 | 0 | Dead zone: no towers from any source |