Louisville

County:: Clay County
County Seat:: Yes
Area (mi²):: 0.828
State:: Illinois

Louisville is a village located in Clay County, Illinois. Louisville has a 2025 population of 1,102. It is also the county seat of Clay County. Louisville is currently declining at a rate of -0.72% annually and its population has decreased by -3.67% since the most recent census, which recorded a population of 1,144 in 2020.

The average household income in Louisville is $58,089 with a poverty rate of 28.59%.The median age in Louisville is 38.6 years: 30.3 years for males, and 42.5 years for females.

Demographics

The racial composition of Louisville includes 97.05% White, and smaller percentages for Black or African American, Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,250	97.05%
Black or African American	34	2.64%
Two or more races	4	0.31%

Louisville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Louisville's average per capita income is $37,868. Household income levels show a median of $44,318. The poverty rate stands at 28.59%.

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	$80,431	-
Families	$64,821	$69,981
Households	$44,318	$58,089
Non Families	$30,536	$37,761

$37,868

Average Income

$44,318

Median Household Income

28.59%

Poverty Rate