Lumbaca-Unayan comprises 9 barangays with an estimated population of 2,977. 9 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 |
|---|---|---|---|
| Bangon (Dilausan) | 284 | 0 | Dead zone: no towers from any source |
| Beta | 38 | 0 | Dead zone: no towers from any source |
| Calalon | 549 | 0 | Dead zone: no towers from any source |
| Calipapa | 878 | 0 | Dead zone: no towers from any source |
| Dilausan | 76 | 0 | Dead zone: no towers from any source |
| Dimapaok | 151 | 0 | Dead zone: no towers from any source |
| Lumbac Dilausan | 233 | 0 | Dead zone: no towers from any source |
| Oriental Beta | 407 | 0 | Dead zone: no towers from any source |
| Tringun | 361 | 0 | Dead zone: no towers from any source |