Vandalia

County:: Fayette County
County Seat:: Yes
Area (mi²):: 8.147
State:: Illinois

Vandalia is a city located in Fayette County, Illinois. Vandalia has a 2025 population of 7,294. It is also the county seat of Fayette County. Vandalia is currently declining at a rate of -0.44% annually and its population has decreased by -2.13% since the most recent census, which recorded a population of 7,453 in 2020.

The average household income in Vandalia is $57,095 with a poverty rate of 22.12%. The median age in Vandalia is 42.9 years: 38.7 years for males, and 48.4 years for females.

Demographics

The racial composition of Vandalia includes 79.69% White, 11.39% Black or African American, and smaller percentages for Native American, other race, Native Hawaiian or Pacific Islander, Asian and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Native American

Other race

Native Hawaiian or Pacific Islander

Asian

Race	Population	Percentage (of total)
White	4,814	79.69%
Black or African American	688	11.39%
Two or more races	384	6.36%
Native American	93	1.54%
Other race	48	0.79%
Native Hawaiian or Pacific Islander	10	0.17%
Asian	4	0.07%

Vandalia Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Vandalia's average per capita income is $30,109. Household income levels show a median of $43,184. The poverty rate stands at 22.12%.

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	$58,750	-
Families	$56,563	$72,276
Households	$43,184	$57,095
Non Families	$29,253	$38,773

$30,109

Average Income

$43,184

Median Household Income

22.12%

Poverty Rate