Sullivan County Flag

Sullivan County

State:
Indiana
County Seat:
Sullivan

Sullivan County's estimated 2025 population is 20,929 with a growth rate of 0.41% in the past year according to the most recent United States census data. Sullivan County is the 69th largest county in Indiana. The 2010 population was 21,387 and has seen a growth of -2.14% since that time.

20,929
Total Population
47
Population Density (miĀ²)
69
Population Rank (State)
86 0.41%
Annual Population Growth

Sullivan County Population

Sullivan County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Sullivan County includes 91.07% White, 3.36% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White18,91291.07%
Two or more races8524.1%
Black or African American6983.36%
Other race1490.72%
Asian1380.66%
Native American140.07%
Native Hawaiian or Pacific Islander30.01%

Sullivan County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sullivan County's average per capita income is $36,184. Household income levels show a median of $54,985. The poverty rate stands at 13.47%.

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$80,330-
Families$70,470$81,827
Households$54,985$74,197
Non Families$34,779$55,400

$36,184

Average Income

$54,985

Median Household Income

13.47%

Poverty Rate