Sullivan Flag

Sullivan

County:
Moultrie County
County Seat:
Yes
Area (mi²):
41.284
State:
Illinois

Sullivan is located in Moultrie County, Illinois. Sullivan has a 2025 population of 644 . It is also the county seat of Moultrie County . Sullivan is currently growing at a rate of 0.16% annually but its population has decreased by -1.83% since the most recent census, which recorded a population of 656 in 2020.

The average household income in Sullivan is $88,309 with a poverty rate of 16.69%. The median age in Sullivan is 41.1 years: 38.9 years for males, and 41.9 years for females. For every 100 females there are 79.9 males.

644
Total Population
16
Density (mi²)
1 0.16%
Growth

Sullivan Population

Sullivan Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Sullivan includes 90.6% White, and smaller percentages for other race and multiracial populations.

Population by Race

White (90.6%)

Two or more races (6.48%)

Other race (2.92%)

Race
Population
Percentage (of total)
White55990.6%
Two or more races406.48%
Other race182.92%

Sullivan Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sullivan's average per capita income is $37,305. Household income levels show a median of $66,500. The poverty rate stands at 16.69%.

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$119,750-
Families$91,250$100,891
Households$66,500$88,309
Non Families$55,764$54,107

$37,305

Average Income

$66,500

Median Household Income

16.69%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)