Union Flag

Union

County:
McHenry County
County Seat:
No
Area (mi²):
0.836
State:
Illinois

Union is a village located in McHenry County, Illinois. Union has a 2025 population of 623. Union is currently growing at a rate of 2.47% annually and its population has increased by 13.27% since the most recent census, which recorded a population of 550 in 2020.

The average household income in Union is $106,340 with a poverty rate of 4.25%.The median age in Union is 38.1 years: 36.4 years for males, and 39.4 years for females.

623
Total Population
745
Density (mi²)
15 2.47%
Growth

Union Population

Union Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Union includes 91.77% White, 5.58% Asian, and smaller percentages for other race, Two or more races, Black or African American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White69191.77%
Asian425.58%
Other race111.46%
Two or more races70.93%
Black or African American20.27%

Union Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Union's average per capita income is $49,286. Household income levels show a median of $100,104. The poverty rate stands at 4.25%.

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$123,438-
Families$102,188$124,051
Households$100,104$106,340
Non Families-$67,714

$49,286

Average Income

$100,104

Median Household Income

4.25%

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)