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 2025 population of 41,831 . Crystal Lake is currently growing at a rate of 0.77% annually and its population has increased by 3.95% since the most recent census, which recorded a population of 40,240 in 2020.

The average household income in Crystal Lake is $122,862 with a poverty rate of 6.1%. The median age in Crystal Lake is 39.5 years: 38.9 years for males, and 39.9 years for females. For every 100 females there are 94.1 males.

41.8K
Total Population
2,203
Density (mi²)
318 0.77%
Growth

Crystal Lake Population

Crystal Lake Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Crystal Lake includes 84.99% White, 4.44% other race, 3.4% Asian, and smaller percentages for Black or African American, Native American and multiracial populations.

Population by Race

White (84.99%)

Two or more races (6.4%)

Other race (4.44%)

Asian (3.4%)

Black or African American (0.56%)

Native American (0.22%)

Race
Population
Percentage (of total)
White34,36584.99%
Two or more races2,5866.4%
Other race1,7964.44%
Asian1,3753.4%
Black or African American2260.56%
Native American880.22%

Crystal Lake Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Crystal Lake's average per capita income is $59,720. Household income levels show a median of $105,428. The poverty rate stands at 6.1%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$134,105-
Families$121,977$138,413
Households$105,428$122,862
Non Families$62,022$74,161

$59,720

Average Income

$105,428

Median Household Income

6.1%

Poverty Rate

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)