| Place Name | St. Jo |
| Place Type | City |
| ZIP Code(s) | 76265 |
| County | Montague County |
| Area Code(s) | 940 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 1,041 |
| Population Growth Rate (2010-19) | -15.53% |
| Majority Ethnicity | White 95.97% |
| US Congressional District(s) | Texas 13th |
| State House Districts | 68 |
| State Senate Districts | 30 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.97% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.03% |