San Jose comprises 13 barangays with an estimated population of 34,820. 4 of its barangays (31%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Burgos | 2,936 | 1 | Crowdsourced signal only (no registered tower) |
| David | 1,859 | 0 | Dead zone: no towers from any source |
| Iba | 4,020 | 7 | Crowdsourced signal only (no registered tower) |
| Labney | 1,415 | 1 | Crowdsourced signal only (no registered tower) |
| Lawacamulag | 1,265 | 5 | Crowdsourced signal only (no registered tower) |
| Lubigan | 1,435 | 8 | Crowdsourced signal only (no registered tower) |
| Maamot | 2,013 | 0 | Dead zone: no towers from any source |
| Mababanaba | 5,981 | 2 | Crowdsourced signal only (no registered tower) |
| Moriones | 2,732 | 0 | Dead zone: no towers from any source |
| Pao | 1,212 | 0 | Dead zone: no towers from any source |
| San Juan de Valdez | 564 | 5 | Crowdsourced signal only (no registered tower) |
| Sula | 4,546 | 4 | Crowdsourced signal only (no registered tower) |
| Villa Aglipay | 4,842 | 2 | Crowdsourced signal only (no registered tower) |