Alitagtag comprises 19 barangays with an estimated population of 24,189. 5 of its barangays (26%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balagbag | 698 | 7 | Crowdsourced signal only (no registered tower) |
| Concepcion | 421 | 5 | Crowdsourced signal only (no registered tower) |
| Concordia | 709 | 0 | Dead zone: no towers from any source |
| Dalipit East | 609 | 0 | Dead zone: no towers from any source |
| Dalipit West | 801 | 0 | Dead zone: no towers from any source |
| Dominador East | 1,172 | 20 | Crowdsourced signal only (no registered tower) |
| Dominador West | 802 | 7 | Crowdsourced signal only (no registered tower) |
| Munlawin Norte | 1,525 | 2 | Crowdsourced signal only (no registered tower) |
| Munlawin Sur | 400 | 0 | Dead zone: no towers from any source |
| Muzon Primero | 1,913 | 4 | Crowdsourced signal only (no registered tower) |
| Muzon Segundo | 3,351 | 6 | Crowdsourced signal only (no registered tower) |
| Pinagkurusan | 1,347 | 3 | Crowdsourced signal only (no registered tower) |
| Ping-As | 1,357 | 2 | Crowdsourced signal only (no registered tower) |
| Poblacion East | 1,730 | 8 | Crowdsourced signal only (no registered tower) |
| Poblacion West | 2,082 | 4 | Crowdsourced signal only (no registered tower) |
| San Jose | 1,132 | 4 | Crowdsourced signal only (no registered tower) |
| San Juan | 668 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 1,592 | 4 | Crowdsourced signal only (no registered tower) |
| Tadlac | 1,880 | 0 | Dead zone: no towers from any source |