Loreto comprises 17 barangays with an estimated population of 58,801. 16 of its barangays (94%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Binucayan | 2,128 | 0 | Dead zone: no towers from any source |
| Johnson | 2,444 | 0 | Dead zone: no towers from any source |
| Kasapa | 5,505 | 0 | Dead zone: no towers from any source |
| Katipunan | 3,397 | 0 | Dead zone: no towers from any source |
| Kauswagan | 980 | 0 | Dead zone: no towers from any source |
| Magaud | 5,890 | 0 | Dead zone: no towers from any source |
| Nueva Gracia | 3,458 | 0 | Dead zone: no towers from any source |
| Poblacion | 10,153 | 4 | Crowdsourced signal only (no registered tower) |
| Sabud | 629 | 0 | Dead zone: no towers from any source |
| San Isidro | 4,141 | 0 | Dead zone: no towers from any source |
| San Mariano | 5,004 | 0 | Dead zone: no towers from any source |
| San Vicente | 3,635 | 0 | Dead zone: no towers from any source |
| Santa Teresa | 2,211 | 0 | Dead zone: no towers from any source |
| Santo Niño | 805 | 0 | Dead zone: no towers from any source |
| Santo Tomas | 5,723 | 0 | Dead zone: no towers from any source |
| Violanta | 1,153 | 0 | Dead zone: no towers from any source |
| Waloe | 1,545 | 0 | Dead zone: no towers from any source |