Smithton township

County:: St. Clair County
County Seat:: No
Area (mi²):: 32.29
State:: Illinois

Smithton township is located in St. Clair County, Illinois. Smithton township has a 2025 population of 3,978. Smithton township is currently declining at a rate of -0.92% annually and its population has decreased by -4.37% since the most recent census, which recorded a population of 4,160 in 2020.

The average household income in Smithton township is $123,602 with a poverty rate of 4.16%.The median age in Smithton township is 42.3 years: 42.2 years for males, and 42.6 years for females.

Demographics

The racial composition of Smithton township includes 93.01% White, and smaller percentages for Asian, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,833	93.01%
Two or more races	251	6.09%
Asian	30	0.73%
Black or African American	7	0.17%

Smithton township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Smithton township's average per capita income is $62,321. Household income levels show a median of $116,875. The poverty rate stands at 4.16%.

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	$147,083	-
Families	$139,891	$142,290
Households	$116,875	$123,602
Non Families	$33,472	$51,609

$62,321

Average Income

$116,875

Median Household Income

4.16%

Poverty Rate