Basilisa (Rizal) comprises 27 barangays with an estimated population of 35,732. 26 of its barangays (96%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Benglen | 261 | 0 | Dead zone: no towers from any source |
| Catadman | 0 | 0 | Dead zone: no towers from any source |
| Columbus | 167 | 0 | Dead zone: no towers from any source |
| Coring | 288 | 0 | Dead zone: no towers from any source |
| Cortes | 1,292 | 0 | Dead zone: no towers from any source |
| Diegas | 167 | 0 | Dead zone: no towers from any source |
| Doña Helene | 1,046 | 0 | Dead zone: no towers from any source |
| Edera | 518 | 0 | Dead zone: no towers from any source |
| Ferdinand | 1,510 | 5 | Crowdsourced signal only (no registered tower) |
| Geotina | 4,998 | 0 | Dead zone: no towers from any source |
| Imee (Bactasan) | 495 | 0 | Dead zone: no towers from any source |
| Melgar | 1,373 | 0 | Dead zone: no towers from any source |
| Montag | 1,487 | 0 | Dead zone: no towers from any source |
| Navarro | 1,856 | 0 | Dead zone: no towers from any source |
| New Nazareth | 1,659 | 0 | Dead zone: no towers from any source |
| Poblacion | 172 | 0 | Dead zone: no towers from any source |
| Puerto Princesa | 1,762 | 0 | Dead zone: no towers from any source |
| Rita Glenda | 561 | 0 | Dead zone: no towers from any source |
| Roma | 2,317 | 0 | Dead zone: no towers from any source |
| Roxas | 678 | 0 | Dead zone: no towers from any source |
| Santa Monica | 252 | 0 | Dead zone: no towers from any source |
| Santo Niño | 1,232 | 0 | Dead zone: no towers from any source |
| Sering | 2,694 | 0 | Dead zone: no towers from any source |
| Sombrado | 88 | 0 | Dead zone: no towers from any source |
| Tag-abaca | 5,320 | 0 | Dead zone: no towers from any source |
| Villa Ecleo | 3,112 | 0 | Dead zone: no towers from any source |
| Villa Pantinople | 427 | 0 | Dead zone: no towers from any source |