Baao comprises 30 barangays with an estimated population of 66,483. 15 of its barangays (50%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agdangan Pob. (San Cayetano) | 4,405 | 13 | Crowdsourced signal only (no registered tower) |
| Antipolo | 1,200 | 0 | Dead zone: no towers from any source |
| Bagumbayan | 2,117 | 0 | Dead zone: no towers from any source |
| Buluang (San Antonio) | 12,138 | 15 | Crowdsourced signal only (no registered tower) |
| Caranday (La Purisima) | 1,147 | 0 | Dead zone: no towers from any source |
| Cristo Rey | 359 | 0 | Dead zone: no towers from any source |
| Del Pilar | 628 | 0 | Dead zone: no towers from any source |
| Del Rosario (Pob.) | 193 | 2 | Crowdsourced signal only (no registered tower) |
| Iyagan | 1,277 | 0 | Dead zone: no towers from any source |
| La Medalla | 2,263 | 7 | Crowdsourced signal only (no registered tower) |
| Lourdes | 806 | 0 | Dead zone: no towers from any source |
| Nababarera | 365 | 0 | Dead zone: no towers from any source |
| Pugay (San Rafael) | 1,372 | 0 | Dead zone: no towers from any source |
| Sagrada | 6,390 | 14 | Crowdsourced signal only (no registered tower) |
| Salvacion | 4,978 | 2 | Crowdsourced signal only (no registered tower) |
| San Francisco (Pob.) | 5,263 | 22 | Crowdsourced signal only (no registered tower) |
| San Isidro | 3,694 | 13 | Crowdsourced signal only (no registered tower) |
| San Jose (Pob.) | 2,008 | 5 | Crowdsourced signal only (no registered tower) |
| San Juan | 2,565 | 3 | Crowdsourced signal only (no registered tower) |
| San Nicolas (Pob.) | 1,049 | 4 | Crowdsourced signal only (no registered tower) |
| San Rafael (Ikpan) | 390 | 0 | Dead zone: no towers from any source |
| San Ramon (Pob.) | 68 | 0 | Dead zone: no towers from any source |
| San Roque (Pob.) | 69 | 2 | Crowdsourced signal only (no registered tower) |
| San Vicente | 1,788 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Cruz (Pob.) | 2,992 | 4 | Crowdsourced signal only (no registered tower) |
| Santa Eulalia | 1,273 | 0 | Dead zone: no towers from any source |
| Santa Isabel | 621 | 0 | Dead zone: no towers from any source |
| Santa Teresa (Viga) | 346 | 0 | Dead zone: no towers from any source |
| Santa Teresita | 3,601 | 5 | Crowdsourced signal only (no registered tower) |
| Tapol | 1,118 | 0 | Dead zone: no towers from any source |