Don Carlos comprises 29 barangays with an estimated population of 78,170. 17 of its barangays (59%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bismartz | 1,257 | 0 | Dead zone: no towers from any source |
| Bocboc | 4,092 | 2 | Verified coverage (NTC + crowdsourced) |
| Buyot | 1,131 | 0 | Dead zone: no towers from any source |
| Cabadiangan | 856 | 0 | Dead zone: no towers from any source |
| Calaocalao | 2,165 | 1 | Verified coverage (NTC + crowdsourced) |
| Don Carlos Norte | 5,243 | 13 | Verified coverage (NTC + crowdsourced) |
| Don Carlos Sur (Pob.) | 8,105 | 15 | Verified coverage (NTC + crowdsourced) |
| Embayao | 2,027 | 0 | Dead zone: no towers from any source |
| Kalubihon | 2,370 | 2 | Registered tower only (not crowd-verified) |
| Kasigkot | 2,050 | 0 | Dead zone: no towers from any source |
| Kawilihan | 747 | 4 | Crowdsourced signal only (no registered tower) |
| Kiara | 2,137 | 2 | Registered tower only (not crowd-verified) |
| Kibatang | 3,013 | 1 | Crowdsourced signal only (no registered tower) |
| Mahayahay | 916 | 0 | Dead zone: no towers from any source |
| Manlamonay | 1,367 | 0 | Dead zone: no towers from any source |
| Maraymaray | 4,927 | 0 | Dead zone: no towers from any source |
| Mauswagon | 361 | 0 | Dead zone: no towers from any source |
| Minsalagan | 1,680 | 1 | Crowdsourced signal only (no registered tower) |
| New Nongnongan (Masimag) | 2,638 | 0 | Dead zone: no towers from any source |
| New Visayas | 1,715 | 0 | Dead zone: no towers from any source |
| Old Nongnongan | 3,106 | 2 | Registered tower only (not crowd-verified) |
| Pinamaloy | 8,362 | 0 | Dead zone: no towers from any source |
| Pualas | 1,177 | 0 | Dead zone: no towers from any source |
| San Antonio East | 390 | 0 | Dead zone: no towers from any source |
| San Antonio West | 1,318 | 0 | Dead zone: no towers from any source |
| San Francisco | 826 | 0 | Dead zone: no towers from any source |
| San Nicolas (Banban) | 7,110 | 2 | Verified coverage (NTC + crowdsourced) |
| San Roque | 595 | 0 | Dead zone: no towers from any source |
| Sinangguyan | 6,489 | 4 | Verified coverage (NTC + crowdsourced) |