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, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Asian

Native American

Native Hawaiian or Pacific Islander

Other 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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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