| Place Name | South Jacksonville |
| Place Type | Village |
| ZIP Code(s) | 62650 |
| County | Morgan County |
| Area Code(s) | 217 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 3,330 |
| Population Growth Rate (2010-19) | -0.87% |
| Majority Ethnicity | White 92.82% |
| Metro/Micro Stats Area | Jacksonville, IL |
| US Congressional District(s) | Illinois 18th |
| State House Districts | 100 |
| State Senate Districts | 50 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 92.82% |
| African American | 4.65% |
| Hispanic | 0.19% |
| Asian | 0.51% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.83% |