| City : | Crystal Lake City |
| County : | Mchenry County |
| State : | Illinois (IL) |
| | |
| Land Area : | 18.35 sq mi |
| Water Area : | 0.61 sq mi |
| Latitude : | 42.2325535 |
| Longitude : | -88.3353312 |
| | |
| Population (2010): | 40,743 |
| Population Estimate (2012) : | 40,867 |
| Population Density : | 2,220.10/sq mi |
| Housing Units (2012) : | 15,176 |
| Median Household Income (2012) : | $78,311 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $91,870 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $223,600 (Illinois : $190,800, USA : $181,400) |