Lagayan comprises 5 barangays with an estimated population of 5,614. 5 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Ba-i | 885 | 0 | Dead zone: no towers from any source |
| Collago | 977 | 0 | Dead zone: no towers from any source |
| Pang-ot | 684 | 0 | Dead zone: no towers from any source |
| Poblacion | 2,010 | 0 | Dead zone: no towers from any source |
| Pulot | 1,058 | 0 | Dead zone: no towers from any source |