Looc comprises 12 barangays with an estimated population of 22,014. 9 of its barangays (75%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agojo | 1,017 | 0 | Dead zone: no towers from any source |
| Balatucan | 968 | 0 | Dead zone: no towers from any source |
| Buenavista | 1,049 | 0 | Dead zone: no towers from any source |
| Camandag | 977 | 0 | Dead zone: no towers from any source |
| Guinhayaan | 1,656 | 2 | Crowdsourced signal only (no registered tower) |
| Limon Norte | 2,880 | 1 | Crowdsourced signal only (no registered tower) |
| Limon Sur | 2,737 | 0 | Dead zone: no towers from any source |
| Manhac | 1,384 | 0 | Dead zone: no towers from any source |
| Pili | 1,003 | 0 | Dead zone: no towers from any source |
| Poblacion | 3,320 | 8 | Crowdsourced signal only (no registered tower) |
| Punta | 3,892 | 0 | Dead zone: no towers from any source |
| Tuguis | 1,131 | 0 | Dead zone: no towers from any source |