Agno comprises 17 barangays with an estimated population of 30,346. 16 of its barangays (94%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Allabon | 781 | 0 | Dead zone: no towers from any source |
| Aloleng | 2,423 | 0 | Dead zone: no towers from any source |
| Bangan-Oda | 5,152 | 2 | Crowdsourced signal only (no registered tower) |
| Baruan | 1,717 | 0 | Dead zone: no towers from any source |
| Boboy | 3,275 | 0 | Dead zone: no towers from any source |
| Cayungnan | 2,215 | 0 | Dead zone: no towers from any source |
| Dangley | 1,039 | 0 | Dead zone: no towers from any source |
| Gayusan | 1,341 | 0 | Dead zone: no towers from any source |
| Macaboboni | 1,952 | 0 | Dead zone: no towers from any source |
| Magsaysay | 2,107 | 0 | Dead zone: no towers from any source |
| Namatucan | 2,515 | 0 | Dead zone: no towers from any source |
| Patar | 1,574 | 0 | Dead zone: no towers from any source |
| Poblacion East | 637 | 0 | Dead zone: no towers from any source |
| Poblacion West | 350 | 0 | Dead zone: no towers from any source |
| San Juan | 754 | 0 | Dead zone: no towers from any source |
| Tupa | 1,331 | 0 | Dead zone: no towers from any source |
| Viga | 1,183 | 0 | Dead zone: no towers from any source |