| Zip Code : | 62301 |
| City : | Quincy city |
| County : | Adams County |
| State : | Illinois (IL) |
| | |
| Land Area : | 11.30 sq mi |
| Water Area : | 0.54 sq mi |
| Latitude : | 39.9311379 |
| Longitude : | -91.3856953 |
| | |
| Population (2010): | 33,758 |
| Population Estimate (2012) : | 33,552 |
| Population Density : | 2,988.25/sq mi |
| Housing Units (2012) : | 15,576 |
| Median Household Income (2012) : | $38,772 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $51,528 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $88,100 (Illinois : $190,800, USA : $181,400) |