| Place Name | Jacksonville |
| Place Type | City |
| ZIP Code(s) | 62650 |
| County | Morgan County |
| Area Code(s) | 217 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 19,401 |
| Population Growth Rate (2010-19) | -9.41% |
| Majority Ethnicity | White 84.43% |
| 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 | 84.43% |
| African American | 10.15% |
| Hispanic | 0.35% |
| Asian | 0.96% |
| Native American | 0.01% |
| Hawaiin/Pacific Islander | 4.1% |