Atok comprises 8 barangays with an estimated population of 21,140. 3 of its barangays (38%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Abiang | 4,061 | 7 | Crowdsourced signal only (no registered tower) |
| Caliking | 3,662 | 11 | Crowdsourced signal only (no registered tower) |
| Cattubo | 1,955 | 3 | Crowdsourced signal only (no registered tower) |
| Naguey | 1,055 | 0 | Dead zone: no towers from any source |
| Paoay | 3,415 | 4 | Crowdsourced signal only (no registered tower) |
| Pasdong | 731 | 0 | Dead zone: no towers from any source |
| Poblacion | 3,365 | 0 | Dead zone: no towers from any source |
| Topdac | 2,896 | 6 | Crowdsourced signal only (no registered tower) |