Marengo township Flag

Marengo township

County:
McHenry County
County Seat:
No
Area (mi²):
35.949
State:
Illinois

Marengo township is located in McHenry County, Illinois. Marengo township has a 2025 population of 7,321. Marengo township is currently growing at a rate of 0.51% annually and its population has increased by 1.47% since the most recent census, which recorded a population of 7,215 in 2020.

The average household income in Marengo township is $93,830 with a poverty rate of 12.48%. The median age in Marengo township is 35.1 years: 32.6 years for males, and 36.3 years for females.

7.3K
Total Population
204
Density (mi²)
37 0.51%
Growth

Marengo township Population

Marengo township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Marengo township includes 92.78% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White6,71292.78%
Two or more races3655.05%
Other race1221.69%
Black or African American350.48%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%

Marengo township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marengo township's average per capita income is $58,790. Household income levels show a median of $75,104. The poverty rate stands at 12.48%.

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$133,178-
Families$114,817$112,830
Households$75,104$93,830
Non Families$39,313$54,592

$58,790

Average Income

$75,104

Median Household Income

12.48%

Poverty Rate

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)