Mankayan comprises 12 barangays with an estimated population of 40,427. 6 of its barangays (50%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balili | 7,848 | 1 | Crowdsourced signal only (no registered tower) |
| Bedbed | 542 | 0 | Dead zone: no towers from any source |
| Bulalacao | 3,950 | 1 | Crowdsourced signal only (no registered tower) |
| Cabiten | 1,188 | 1 | Crowdsourced signal only (no registered tower) |
| Colalo | 2,178 | 0 | Dead zone: no towers from any source |
| Guinaoang | 2,638 | 1 | Crowdsourced signal only (no registered tower) |
| Paco | 6,423 | 1 | Crowdsourced signal only (no registered tower) |
| Palasaan | 2,596 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,192 | 0 | Dead zone: no towers from any source |
| Sapid | 3,740 | 0 | Dead zone: no towers from any source |
| Tabio | 6,659 | 0 | Dead zone: no towers from any source |
| Taneg | 1,473 | 5 | Crowdsourced signal only (no registered tower) |