Tanudan comprises 16 barangays with an estimated population of 12,919. 15 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 |
|---|---|---|---|
| Anggacan | 234 | 0 | Dead zone: no towers from any source |
| Anggacan Sur | 317 | 0 | Dead zone: no towers from any source |
| Babbanoy | 383 | 0 | Dead zone: no towers from any source |
| Dacalan | 559 | 1 | Crowdsourced signal only (no registered tower) |
| Dupligan | 3,039 | 0 | Dead zone: no towers from any source |
| Gaang | 410 | 0 | Dead zone: no towers from any source |
| Lay-asan | 669 | 0 | Dead zone: no towers from any source |
| Lower Lubo | 676 | 0 | Dead zone: no towers from any source |
| Lower Mangali | 240 | 0 | Dead zone: no towers from any source |
| Lower Taloctoc | 833 | 0 | Dead zone: no towers from any source |
| Mabaca | 1,103 | 0 | Dead zone: no towers from any source |
| Mangali Centro | 172 | 0 | Dead zone: no towers from any source |
| Pangol | 2,645 | 0 | Dead zone: no towers from any source |
| Poblacion | 514 | 0 | Dead zone: no towers from any source |
| Upper Lubo | 560 | 0 | Dead zone: no towers from any source |
| Upper Taloctoc | 565 | 0 | Dead zone: no towers from any source |