Rosario comprises 48 barangays with an estimated population of 141,271. 22 of its barangays (46%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alupay | 5,797 | 19 | Crowdsourced signal only (no registered tower) |
| Antipolo | 1,653 | 0 | Dead zone: no towers from any source |
| Bagong Pook | 6,012 | 13 | Crowdsourced signal only (no registered tower) |
| Balibago | 3,429 | 0 | Dead zone: no towers from any source |
| Barangay A (Pob.) | 1,475 | 0 | Dead zone: no towers from any source |
| Barangay B (Pob.) | 1,326 | 2 | Crowdsourced signal only (no registered tower) |
| Barangay C (Pob.) | 1,274 | 1 | Crowdsourced signal only (no registered tower) |
| Barangay D (Pob.) | 547 | 6 | Crowdsourced signal only (no registered tower) |
| Barangay E (Pob.) | 3,788 | 2 | Crowdsourced signal only (no registered tower) |
| Bayawang | 2,215 | 0 | Dead zone: no towers from any source |
| Baybayin | 2,349 | 7 | Crowdsourced signal only (no registered tower) |
| Bulihan | 4,479 | 3 | Crowdsourced signal only (no registered tower) |
| Cahigam | 2,373 | 0 | Dead zone: no towers from any source |
| Calantas | 2,689 | 0 | Dead zone: no towers from any source |
| Colongan | 2,450 | 1 | Crowdsourced signal only (no registered tower) |
| Itlugan | 7,497 | 11 | Crowdsourced signal only (no registered tower) |
| Leviste (Tubahan) | 1,889 | 0 | Dead zone: no towers from any source |
| Lumbangan | 1,681 | 0 | Dead zone: no towers from any source |
| Maalas-As | 2,386 | 2 | Crowdsourced signal only (no registered tower) |
| Mabato | 1,645 | 1 | Crowdsourced signal only (no registered tower) |
| Mabunga | 1,894 | 0 | Dead zone: no towers from any source |
| Macalamcam A | 1,675 | 0 | Dead zone: no towers from any source |
| Macalamcam B | 2,134 | 3 | Crowdsourced signal only (no registered tower) |
| Malaya | 4,326 | 1 | Crowdsourced signal only (no registered tower) |
| Maligaya | 602 | 0 | Dead zone: no towers from any source |
| Marilag | 3,165 | 0 | Dead zone: no towers from any source |
| Masaya | 5,813 | 5 | Crowdsourced signal only (no registered tower) |
| Matamis | 1,040 | 0 | Dead zone: no towers from any source |
| Mavalor | 1,862 | 0 | Dead zone: no towers from any source |
| Mayuro | 2,137 | 0 | Dead zone: no towers from any source |
| Namuco | 4,891 | 33 | Crowdsourced signal only (no registered tower) |
| Namunga | 4,569 | 7 | Crowdsourced signal only (no registered tower) |
| Nasi | 7,875 | 0 | Dead zone: no towers from any source |
| Natu | 2,134 | 8 | Crowdsourced signal only (no registered tower) |
| Palakpak | 1,138 | 0 | Dead zone: no towers from any source |
| Pinagsibaan | 2,710 | 1 | Crowdsourced signal only (no registered tower) |
| Putingkahoy | 2,865 | 9 | Crowdsourced signal only (no registered tower) |
| Quilib | 3,554 | 0 | Dead zone: no towers from any source |
| Salao | 3,347 | 0 | Dead zone: no towers from any source |
| San Carlos | 4,653 | 6 | Crowdsourced signal only (no registered tower) |
| San Ignacio | 3,938 | 12 | Crowdsourced signal only (no registered tower) |
| San Isidro | 2,831 | 0 | Dead zone: no towers from any source |
| San Jose | 1,681 | 2 | Crowdsourced signal only (no registered tower) |
| San Roque | 3,068 | 4 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 4,821 | 1 | Crowdsourced signal only (no registered tower) |
| Timbugan | 1,014 | 0 | Dead zone: no towers from any source |
| Tiquiwan | 2,767 | 8 | Crowdsourced signal only (no registered tower) |
| Tulos | 1,813 | 0 | Dead zone: no towers from any source |