Luuk comprises 12 barangays with an estimated population of 17,035. 7 of its barangays (58%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bual | 980 | 2 | Crowdsourced signal only (no registered tower) |
| Guimbaun | 644 | 0 | Dead zone: no towers from any source |
| Kan-Bulak | 802 | 0 | Dead zone: no towers from any source |
| Kan-Mindus | 5,542 | 2 | Crowdsourced signal only (no registered tower) |
| Lambago | 583 | 1 | Crowdsourced signal only (no registered tower) |
| Lianutan | 1,033 | 0 | Dead zone: no towers from any source |
| Lingah | 453 | 0 | Dead zone: no towers from any source |
| Mananti | 422 | 0 | Dead zone: no towers from any source |
| Niog-niog | 1,271 | 0 | Dead zone: no towers from any source |
| Tandu-Bato | 983 | 14 | Crowdsourced signal only (no registered tower) |
| Tubig-Puti (Pob.) | 3,683 | 3 | Crowdsourced signal only (no registered tower) |
| Tulayan Island | 639 | 0 | Dead zone: no towers from any source |