Sullivan

County:: Moultrie County
County Seat:: Yes
Area (mi²):: 2.769
State:: Illinois

Sullivan is a city located in Moultrie County, Illinois. Sullivan has a 2025 population of 4,184. It is also the county seat of Moultrie County. Sullivan is currently declining at a rate of -1.04% annually and its population has decreased by -4.97% since the most recent census, which recorded a population of 4,403 in 2020.

The average household income in Sullivan is $78,450 with a poverty rate of 11.58%.The median age in Sullivan is 38.1 years: 36.6 years for males, and 39.8 years for females.

Demographics

The racial composition of Sullivan includes 95.46% White, and smaller percentages for Black or African American, Two or more races, Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	4,060	95.46%
Black or African American	93	2.19%
Two or more races	87	2.05%
Asian	13	0.31%

Sullivan Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sullivan's average per capita income is $43,924. Household income levels show a median of $62,845. The poverty rate stands at 11.58%.

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	$90,205	-
Families	$70,694	$93,035
Households	$62,845	$78,450
Non Families	$35,756	$48,984

$43,924

Average Income

$62,845

Median Household Income

11.58%

Poverty Rate