Marissa township Flag

Marissa township

County Seat:
No
Area (mi²):
34.449
State:
Illinois

Marissa township is located in St. Clair County, Illinois. Marissa township has a 2025 population of 2,119. Marissa township is currently declining at a rate of -1.26% annually and its population has decreased by -6.4% since the most recent census, which recorded a population of 2,264 in 2020.

The average household income in Marissa township is $66,481 with a poverty rate of 15.23%.The median age in Marissa township is 45.6 years: 49.7 years for males, and 40.6 years for females.

2.1K
Total Population
62
Density (mi²)
-27 -1.26%
Growth

Marissa township Population

Marissa township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Marissa township includes 89.79% White, and smaller percentages for Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White1,56689.79%
Two or more races1739.92%
Native American50.29%

Marissa township Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marissa township's average per capita income is $38,594. Household income levels show a median of $52,217. The poverty rate stands at 15.23%.

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$87,321-
Families$73,850$83,001
Households$52,217$66,481
Non Families$22,359$41,909

$38,594

Average Income

$52,217

Median Household Income

15.23%

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)