Crystal Lake Flag

Crystal Lake

County:
McHenry County
County Seat:
No
Area (mi²):
18.985
State:
Illinois

Crystal Lake is a city located in McHenry County, Illinois. Crystal Lake has a 2026 population of 41,513. Crystal Lake is currently growing at a rate of 1.4% annually and its population has increased by 3.16% since the most recent census, which recorded a population of 40,240 in 2020.

41.5K
Total Population
2,187
Density (mi²)
572 1.4%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)