| City : | Jacksonville City |
| County : | Morgan County |
| State : | Illinois (IL) |
| | |
| Land Area : | 10.47 sq mi |
| Water Area : | 0.19 sq mi |
| Latitude : | 39.7291510 |
| Longitude : | -90.2322010 |
| | |
| Population (2010): | 19,446 |
| Population Estimate (2012) : | 19,401 |
| Population Density : | 1,856.57/sq mi |
| Housing Units (2012) : | 8,162 |
| Median Household Income (2012) : | $41,228 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $55,271 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $90,700 (Illinois : $190,800, USA : $181,400) |