Guagua comprises 31 barangays with an estimated population of 70,458. 9 of its barangays (29%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Ascomo | 2,654 | 6 | Crowdsourced signal only (no registered tower) |
| Bancal | 8,091 | 0 | Dead zone: no towers from any source |
| Jose Abad Santos (Siran) | 2,203 | 15 | Crowdsourced signal only (no registered tower) |
| Lambac | 4,303 | 1 | Crowdsourced signal only (no registered tower) |
| Magsaysay | 1,396 | 0 | Dead zone: no towers from any source |
| Maquiapo | 2,778 | 1 | Crowdsourced signal only (no registered tower) |
| Natividad | 4,736 | 0 | Dead zone: no towers from any source |
| Plaza Burgos (Pob.) | 38 | 0 | Dead zone: no towers from any source |
| Pulungmasle | 5,081 | 6 | Crowdsourced signal only (no registered tower) |
| Rizal | 2,253 | 0 | Dead zone: no towers from any source |
| San Agustin | 1,736 | 7 | Crowdsourced signal only (no registered tower) |
| San Antonio | 2,615 | 16 | Crowdsourced signal only (no registered tower) |
| San Isidro | 1,123 | 0 | Dead zone: no towers from any source |
| San Jose | 2,339 | 16 | Crowdsourced signal only (no registered tower) |
| San Juan | 535 | 2 | Crowdsourced signal only (no registered tower) |
| San Juan Bautista | 198 | 0 | Dead zone: no towers from any source |
| San Juan Nepomuceno | 5,514 | 23 | Crowdsourced signal only (no registered tower) |
| San Matias | 6,270 | 27 | Crowdsourced signal only (no registered tower) |
| San Miguel (Betis) | 879 | 6 | Crowdsourced signal only (no registered tower) |
| San Nicolas 1st | 203 | 0 | Dead zone: no towers from any source |
| San Nicolas 2nd | 110 | 4 | Crowdsourced signal only (no registered tower) |
| San Pablo | 1,597 | 5 | Crowdsourced signal only (no registered tower) |
| San Pedro | 1,413 | 6 | Crowdsourced signal only (no registered tower) |
| San Rafael (Duck Island) | 1,620 | 1 | Crowdsourced signal only (no registered tower) |
| San Roque | 956 | 2 | Crowdsourced signal only (no registered tower) |
| San Vicente (Ibus) | 7,049 | 2 | Crowdsourced signal only (no registered tower) |
| Santa Filomena (Pob.) | 669 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Ines | 1,070 | 0 | Dead zone: no towers from any source |
| Santa Ursula | 340 | 7 | Crowdsourced signal only (no registered tower) |
| Santo Cristo | 319 | 3 | Crowdsourced signal only (no registered tower) |
| Santo Niño (Pob.) | 370 | 2 | Crowdsourced signal only (no registered tower) |