Biri comprises 8 barangays with an estimated population of 6,405. 6 of its barangays (75%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Kauswagan (Basud) | 415 | 0 | Dead zone: no towers from any source |
| MacArthur | 184 | 0 | Dead zone: no towers from any source |
| Pio del Pilar | 561 | 0 | Dead zone: no towers from any source |
| Poblacion (Biri) | 665 | 1 | Crowdsourced signal only (no registered tower) |
| Progresso | 1,135 | 3 | Crowdsourced signal only (no registered tower) |
| San Antonio | 1,468 | 0 | Dead zone: no towers from any source |
| San Pedro | 735 | 0 | Dead zone: no towers from any source |
| Santo Niño | 1,242 | 0 | Dead zone: no towers from any source |