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.
Data after 2023 is projected based on recent change
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.
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% |
Married
Widowed
Divorced
Separated
Never Married
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%.
Name | Median | Mean |
---|---|---|
Married Families | $90,205 | - |
Families | $70,694 | $93,035 |
Households | $62,845 | $78,450 |
Non Families | $35,756 | $48,984 |
Average Income
Median Household Income
Poverty Rate