Josefina comprises 14 barangays with an estimated population of 10,426. 12 of its barangays (86%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bogo Calabat | 2,894 | 0 | Dead zone: no towers from any source |
| Dawa (Diwa) | 233 | 0 | Dead zone: no towers from any source |
| Ebarle | 149 | 0 | Dead zone: no towers from any source |
| Gumahan (Pob.) | 201 | 1 | Crowdsourced signal only (no registered tower) |
| Leonardo | 1,155 | 0 | Dead zone: no towers from any source |
| Litapan | 133 | 1 | Crowdsourced signal only (no registered tower) |
| Lower Bagong Tudela | 779 | 0 | Dead zone: no towers from any source |
| Mansanas | 355 | 0 | Dead zone: no towers from any source |
| Moradji | 117 | 0 | Dead zone: no towers from any source |
| Nemeño | 184 | 0 | Dead zone: no towers from any source |
| Nopulan | 1,831 | 0 | Dead zone: no towers from any source |
| Sebukang | 1,622 | 0 | Dead zone: no towers from any source |
| Tagaytay Hill | 104 | 0 | Dead zone: no towers from any source |
| Upper Bagong Tudela (Pob.) | 669 | 0 | Dead zone: no towers from any source |