Willow Lake Flag

Willow Lake

County Seat:
No
Area (mi²):
2.732
State:
Illinois

Willow Lake is a CDP located in Stephenson County, Illinois. Willow Lake has a 2026 population of 1,031. Willow Lake is currently growing at a rate of 6.62% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Willow Lake is $100,568 with a poverty rate of 6.41%. The median age in Willow Lake is 57 years: 56.7 years for males, and 59.1 years for females. For every 100 females there are 97.4 males.

1K
Total Population
377
Density (mi²)
64 6.62%
Growth

Willow Lake Population

Willow Lake Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,031646.62%
2025967657.21%

Median Age

Overall: 57 years
Female: 59.1 years
Male: 56.7 years

Willow Lake Adults

There are 684 adults, (239 of whom are seniors) in Willow Lake.

Sex Ratio

Female: 387 (50.7%)
Male: 377 (49.3%)

Demographics

The racial composition of Willow Lake includes 92.41% White, 4.58% Black or African American, and smaller percentages for Asian, Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White70692.41%
Black or African American354.58%
Asian151.96%
Two or more races81.05%
Race
Population ↓
Percentage (of total)
Two or more races81.05%
Race
Population ↓
Percentage (of total)
White70692.41%
Black or African American354.58%
Asian151.96%

Willow Lake Marital Status

Economics and Income Statistics

Willow Lake 's average per capita income is $63,942. Household income levels show a median of $100,568. The poverty rate stands at 6.41%.

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$127,639-
Families$109,063$114,099
Households$100,568$109,252
Non Families$88,438$84,400

$63,942

Average Income

$100,568

Median Household Income

6.41%

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)