Marissa

County:: St. Clair County
County Seat:: No
Area (mi²):: 7.214
State:: Illinois

Marissa is a village located in St. Clair County, Illinois. Marissa has a 2025 population of 1,701. Marissa is currently declining at a rate of -1.45% annually and its population has decreased by -6.95% since the most recent census, which recorded a population of 1,828 in 2020.

The average household income in Marissa is $58,046 with a poverty rate of 19.13%. The median age in Marissa is 46.7 years: 49.1 years for males, and 42.1 years for females.

Demographics

The racial composition of Marissa includes 84.29% White, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	955	84.29%
Two or more races	173	15.27%
Native American	5	0.44%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Marissa Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marissa's average per capita income is $33,264. Household income levels show a median of $48,393. The poverty rate stands at 19.13%.

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	$74,091	-
Families	$65,446	$70,724
Households	$48,393	$58,046
Non Families	$23,077	$42,667

$33,264

Average Income

$48,393

Median Household Income

19.13%

Poverty Rate