Mount Vernon

County:: Jefferson County
County Seat:: Yes
Area (mi²):: 14.649
State:: Illinois

Mount Vernon is a city located in Jefferson County, Illinois. Mount Vernon has a 2025 population of 14,041. It is also the county seat of Jefferson County. Mount Vernon is currently declining at a rate of -0.73% annually and its population has decreased by -3.54% since the most recent census, which recorded a population of 14,556 in 2020.

The average household income in Mount Vernon is $67,340 with a poverty rate of 18.72%. The median age in Mount Vernon is 39 years: 34.8 years for males, and 43.5 years for females.

Demographics

The racial composition of Mount Vernon includes 76.39% White, 12.67% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	11,071	76.39%
Black or African American	1,836	12.67%
Two or more races	1,241	8.56%
Asian	167	1.15%
Other race	155	1.07%
Native American	14	0.1%
Native Hawaiian or Pacific Islander	8	0.06%

Mount Vernon Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mount Vernon's average per capita income is $36,963. Household income levels show a median of $52,751. The poverty rate stands at 18.72%.

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	$77,210	-
Families	$60,647	$75,001
Households	$52,751	$67,340
Non Families	$36,696	$51,950

$36,963

Average Income

$52,751

Median Household Income

18.72%

Poverty Rate