Tabontabon comprises 16 barangays with an estimated population of 11,704. 11 of its barangays (69%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Amandangay | 554 | 0 | Dead zone: no towers from any source |
| Aslum | 224 | 0 | Dead zone: no towers from any source |
| Balingasag | 669 | 0 | Dead zone: no towers from any source |
| Belisong | 673 | 0 | Dead zone: no towers from any source |
| Cambucao | 81 | 1 | Crowdsourced signal only (no registered tower) |
| Capahuan | 1,380 | 0 | Dead zone: no towers from any source |
| District I Pob. (Quezon) | 394 | 0 | Dead zone: no towers from any source |
| District II Pob. (Rizal) | 269 | 1 | Crowdsourced signal only (no registered tower) |
| District III Pob. (Bonifacio) | 239 | 0 | Dead zone: no towers from any source |
| District IV Pob. (Macarthur) | 473 | 2 | Crowdsourced signal only (no registered tower) |
| Guingawan | 321 | 0 | Dead zone: no towers from any source |
| Jabong | 1,345 | 0 | Dead zone: no towers from any source |
| Mercadohay | 925 | 0 | Dead zone: no towers from any source |
| Mering | 2,875 | 1 | Crowdsourced signal only (no registered tower) |
| Mohon | 185 | 0 | Dead zone: no towers from any source |
| San Pablo (Mooc) | 1,097 | 2 | Crowdsourced signal only (no registered tower) |