Tumauini comprises 46 barangays with an estimated population of 76,940. 29 of its barangays (63%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Annafunan | 926 | 0 | Dead zone: no towers from any source |
| Antagan I | 3,813 | 0 | Dead zone: no towers from any source |
| Antagan II | 2,138 | 0 | Dead zone: no towers from any source |
| Arcon | 2,352 | 2 | Crowdsourced signal only (no registered tower) |
| Balug | 993 | 0 | Dead zone: no towers from any source |
| Banig | 296 | 0 | Dead zone: no towers from any source |
| Bantug | 1,099 | 0 | Dead zone: no towers from any source |
| Barangay District 1 (Pob.) | 43 | 0 | Dead zone: no towers from any source |
| Barangay District 2 (Pob.) | 56 | 0 | Dead zone: no towers from any source |
| Barangay District 3 (Pob.) | 276 | 0 | Dead zone: no towers from any source |
| Barangay District 4 (Pob.) | 109 | 0 | Dead zone: no towers from any source |
| Bayabo East | 2,452 | 0 | Dead zone: no towers from any source |
| Caligayan | 2,202 | 0 | Dead zone: no towers from any source |
| Camasi | 719 | 0 | Dead zone: no towers from any source |
| Carpentero | 4,774 | 1 | Crowdsourced signal only (no registered tower) |
| Compania | 992 | 0 | Dead zone: no towers from any source |
| Cumabao | 4,443 | 0 | Dead zone: no towers from any source |
| Fermeldy (Hcda. San Francisco) | 1,795 | 0 | Dead zone: no towers from any source |
| Fugu Abajo | 737 | 1 | Crowdsourced signal only (no registered tower) |
| Fugu Norte | 657 | 0 | Dead zone: no towers from any source |
| Fugu Sur | 300 | 0 | Dead zone: no towers from any source |
| Lalauanan | 1,512 | 3 | Crowdsourced signal only (no registered tower) |
| Lanna | 3,848 | 4 | Crowdsourced signal only (no registered tower) |
| Lapogan | 2,842 | 1 | Crowdsourced signal only (no registered tower) |
| Lingaling | 293 | 3 | Crowdsourced signal only (no registered tower) |
| Liwanag | 2,601 | 2 | Crowdsourced signal only (no registered tower) |
| Malamag East | 605 | 0 | Dead zone: no towers from any source |
| Malamag West | 1,031 | 0 | Dead zone: no towers from any source |
| Maligaya | 815 | 2 | Crowdsourced signal only (no registered tower) |
| Minanga | 4,242 | 2 | Crowdsourced signal only (no registered tower) |
| Moldero | 585 | 0 | Dead zone: no towers from any source |
| Namnama | 1,836 | 0 | Dead zone: no towers from any source |
| Paragu | 2,647 | 2 | Crowdsourced signal only (no registered tower) |
| Pilitan | 699 | 1 | Crowdsourced signal only (no registered tower) |
| San Mateo | 2,299 | 11 | Crowdsourced signal only (no registered tower) |
| San Pedro | 2,059 | 3 | Crowdsourced signal only (no registered tower) |
| San Vicente | 2,689 | 0 | Dead zone: no towers from any source |
| Santa | 4,040 | 3 | Crowdsourced signal only (no registered tower) |
| Santa Catalina | 1,174 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Visitacion (Maggayu) | 404 | 0 | Dead zone: no towers from any source |
| Santo Niño | 1,348 | 0 | Dead zone: no towers from any source |
| Sinippil | 1,405 | 0 | Dead zone: no towers from any source |
| Sisim Abajo | 2,365 | 0 | Dead zone: no towers from any source |
| Sisim Alto | 595 | 0 | Dead zone: no towers from any source |
| Tunggui | 1,459 | 0 | Dead zone: no towers from any source |
| Ugad | 2,375 | 2 | Crowdsourced signal only (no registered tower) |