Pagbilao comprises 27 barangays with an estimated population of 77,937. 10 of its barangays (37%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alupaye | 4,712 | 11 | Crowdsourced signal only (no registered tower) |
| Antipolo | 1,291 | 0 | Dead zone: no towers from any source |
| Añato | 434 | 0 | Dead zone: no towers from any source |
| Bantigue | 1,790 | 3 | Crowdsourced signal only (no registered tower) |
| Barangay 1 Castillo (Pob.) | 1,254 | 4 | Crowdsourced signal only (no registered tower) |
| Barangay 2 Daungan (Pob.) | 2,025 | 0 | Dead zone: no towers from any source |
| Barangay 3 del Carmen (Pob.) | 3,030 | 0 | Dead zone: no towers from any source |
| Barangay 4 Parang (Pob.) | 1,856 | 0 | Dead zone: no towers from any source |
| Barangay 5 Santa Catalina (Pob.) | 1,080 | 4 | Crowdsourced signal only (no registered tower) |
| Barangay 6 Tambak (Pob.) | 1,005 | 0 | Dead zone: no towers from any source |
| Bigo | 1,120 | 2 | Crowdsourced signal only (no registered tower) |
| Binahaan | 5,328 | 8 | Crowdsourced signal only (no registered tower) |
| Bukal | 9,321 | 26 | Crowdsourced signal only (no registered tower) |
| Ibabang Bagumbungan | 432 | 0 | Dead zone: no towers from any source |
| Ibabang Palsabangon | 4,243 | 14 | Crowdsourced signal only (no registered tower) |
| Ibabang Polo | 4,253 | 11 | Crowdsourced signal only (no registered tower) |
| Ikirin | 3,787 | 1 | Crowdsourced signal only (no registered tower) |
| Ilayang Bagumbungan | 266 | 0 | Dead zone: no towers from any source |
| Ilayang Palsabangon | 467 | 0 | Dead zone: no towers from any source |
| Ilayang Polo | 1,496 | 2 | Crowdsourced signal only (no registered tower) |
| Kanluran Malicboy | 1,626 | 9 | Crowdsourced signal only (no registered tower) |
| Mapagong | 5,759 | 19 | Crowdsourced signal only (no registered tower) |
| Mayhay | 1,993 | 1 | Crowdsourced signal only (no registered tower) |
| Pinagbayanan | 8,776 | 10 | Crowdsourced signal only (no registered tower) |
| Silangan Malicboy | 5,562 | 53 | Crowdsourced signal only (no registered tower) |
| Talipan | 4,732 | 13 | Crowdsourced signal only (no registered tower) |
| Tukalan | 299 | 0 | Dead zone: no towers from any source |