Ilog comprises 15 barangays with an estimated population of 57,223. 7 of its barangays (47%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Andulauan | 4,532 | 0 | Dead zone: no towers from any source |
| Balicotoc | 3,405 | 0 | Dead zone: no towers from any source |
| Barangay I (Pob.) | 4,028 | 0 | Dead zone: no towers from any source |
| Barangay II (Pob.) | 4,471 | 0 | Dead zone: no towers from any source |
| Bocana | 2,763 | 10 | Crowdsourced signal only (no registered tower) |
| Calubang | 2,546 | 0 | Dead zone: no towers from any source |
| Canlamay | 2,657 | 7 | Crowdsourced signal only (no registered tower) |
| Consuelo | 601 | 0 | Dead zone: no towers from any source |
| Dancalan | 9,220 | 8 | Crowdsourced signal only (no registered tower) |
| Delicioso | 2,559 | 4 | Crowdsourced signal only (no registered tower) |
| Galicia | 3,367 | 2 | Crowdsourced signal only (no registered tower) |
| Manalad | 3,909 | 9 | Crowdsourced signal only (no registered tower) |
| Pinggot | 3,909 | 0 | Dead zone: no towers from any source |
| Tabu | 6,608 | 9 | Crowdsourced signal only (no registered tower) |
| Vista Alegre | 2,648 | 1 | Crowdsourced signal only (no registered tower) |