Banayoyo comprises 14 barangays with an estimated population of 9,211. 10 of its barangays (71%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagbagotot | 433 | 0 | Dead zone: no towers from any source |
| Banbanaal | 322 | 2 | Crowdsourced signal only (no registered tower) |
| Bisangol | 215 | 0 | Dead zone: no towers from any source |
| Cadanglaan | 98 | 0 | Dead zone: no towers from any source |
| Casilagan Norte | 370 | 0 | Dead zone: no towers from any source |
| Casilagan Sur | 436 | 0 | Dead zone: no towers from any source |
| Elefante | 1,154 | 0 | Dead zone: no towers from any source |
| Guardia | 959 | 0 | Dead zone: no towers from any source |
| Lintic | 1,531 | 0 | Dead zone: no towers from any source |
| Lopez | 863 | 5 | Crowdsourced signal only (no registered tower) |
| Montero | 332 | 1 | Crowdsourced signal only (no registered tower) |
| Naguimba | 1,170 | 0 | Dead zone: no towers from any source |
| Pila | 160 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,168 | 6 | Crowdsourced signal only (no registered tower) |