Smithton

County:: St. Clair County
County Seat:: No
Area (mi²):: 4.503
State:: Illinois

Smithton is a village located in St. Clair County, Illinois. Smithton has a 2025 population of 3,831. Smithton is currently declining at a rate of -0.88% annually and its population has decreased by -4.3% since the most recent census, which recorded a population of 4,003 in 2020.

The average household income in Smithton is $121,341 with a poverty rate of 3.53%.The median age in Smithton is 48.1 years: 47.6 years for males, and 48.2 years for females.

Demographics

The racial composition of Smithton includes 97.18% White, and smaller percentages for Two or more races, Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,413	97.18%
Two or more races	49	1.4%
Black or African American	42	1.2%
Other race	8	0.23%

Smithton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Smithton's average per capita income is $68,000. Household income levels show a median of $114,453. The poverty rate stands at 3.53%.

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
Families	$149,975	$145,348
Married Families	$149,412	-
Households	$114,453	$121,341
Non Families	$32,309	$45,922

$68,000

Average Income

$114,453

Median Household Income

3.53%

Poverty Rate