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 2026 population of 7,449. Marengo township is currently growing at a rate of 0.87% annually and its population has increased by 3.3% since the most recent census, which recorded a population of 7,211 in 2020.

The median household income in Marengo township is $74,172 with a poverty rate of 13.24%. The median age in Marengo township is 32.7 years: 30.3 years for males, and 36 years for females. For every 100 females there are 115.0 males.

7.4K
Total Population
207
Density (mi²)
64 0.87%
Growth

Marengo township Population

Marengo township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20267,449640.87%
20257,385640.87%
20247,321640.88%
20237,257420.58%
20227,215-21-0.29%
20217,236250.35%
20207,211-13-0.18%
20197,333-33-0.45%
20187,366-2-0.03%
20177,368-4-0.05%
20167,372-37-0.5%
20157,409-26-0.35%
20147,435-31-0.42%
20137,466-48-0.64%
20127,514-26-0.34%
20117,540-24-0.32%
20107,56980.11%

Median Age

Overall: 32.7 years
Female: 36 years
Male: 30.3 years

Marengo township Adults

There are 5,495 adults, (1,409 of whom are seniors) in Marengo township.

Sex Ratio

Female: 3,374 (46.5%)
Male: 3,879 (53.5%)

Demographics

The racial composition of Marengo township includes 87.61% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White6,35487.61%
Two or more races73110.08%
Other race1161.6%
Black or African American480.66%
Asian40.06%
Race
Population ↓
Percentage (of total)
Two or more races4345.98%
White1742.4%
Other race1161.6%
Race
Population ↓
Percentage (of total)
White6,18085.21%
Two or more races2974.09%
Black or African American480.66%
Asian40.06%

Marengo township Marital Status

Economics and Income Statistics

Marengo township 's average per capita income is $64,481. Household income levels show a median of $74,172. The poverty rate stands at 13.24%.

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$130,740-
Families$108,102$110,363
Households$74,172$93,280
Non Families$27,770$56,555

$64,481

Average Income

$74,172

Median Household Income

13.24%

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)