Abra de Ilog comprises 10 barangays with an estimated population of 47,737. 3 of its barangays (30%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Armado | 1,541 | 3 | Crowdsourced signal only (no registered tower) |
| Balao | 7,598 | 2 | Crowdsourced signal only (no registered tower) |
| Cabacao | 8,136 | 4 | Crowdsourced signal only (no registered tower) |
| Lumangbayan | 5,965 | 4 | Crowdsourced signal only (no registered tower) |
| Poblacion | 2,174 | 2 | Crowdsourced signal only (no registered tower) |
| San Vicente | 9,745 | 3 | Crowdsourced signal only (no registered tower) |
| Santa Maria | 1,559 | 0 | Dead zone: no towers from any source |
| Tibag | 2,391 | 3 | Crowdsourced signal only (no registered tower) |
| Udalo (Camurong) | 5,025 | 0 | Dead zone: no towers from any source |
| Wawa | 3,603 | 0 | Dead zone: no towers from any source |