Tubajon comprises 9 barangays with an estimated population of 5,977. 9 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Diaz (Romualdez) | 374 | 0 | Dead zone: no towers from any source |
| Imelda | 509 | 0 | Dead zone: no towers from any source |
| Mabini | 992 | 0 | Dead zone: no towers from any source |
| Malinao | 1,106 | 0 | Dead zone: no towers from any source |
| Navarro | 383 | 0 | Dead zone: no towers from any source |
| Roxas | 137 | 0 | Dead zone: no towers from any source |
| San Roque (Pob.) | 201 | 0 | Dead zone: no towers from any source |
| San Vicente (Pob.) | 136 | 0 | Dead zone: no towers from any source |
| Santa Cruz (Pob.) | 2,139 | 0 | Dead zone: no towers from any source |