Mercer township

County:: Mercer County
County Seat:: No
Area (mi²):: 35.424
State:: Illinois

Mercer township is located in Mercer County, Illinois. Mercer township has a 2025 population of 3,870. Mercer township is currently declining at a rate of -0.44% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 3,956 in 2020.

The average household income in Mercer township is $79,472 with a poverty rate of 10.19%. The median age in Mercer township is 42.3 years: 39 years for males, and 42.7 years for females.

Demographics

The racial composition of Mercer township includes 95.77% White, and smaller percentages for Two or more races, Black or African American, other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Other race

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,779	95.77%
Two or more races	80	2.03%
Black or African American	74	1.88%
Other race	12	0.3%
Native American	1	0.03%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Mercer township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mercer township's average per capita income is $45,406. Household income levels show a median of $62,462. The poverty rate stands at 10.19%.

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	$96,797	-
Families	$93,083	$98,287
Households	$62,462	$79,472
Non Families	$34,219	$42,141

$45,406

Average Income

$62,462

Median Household Income

10.19%

Poverty Rate