Sullivan County, Indiana
Located in Indiana, Sullivan County has a population of 20,780 residents and a median age of 41.7 years, making it the #1,835 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.9%. The median home value is $131,100, and the median household income is $56,204, which is 25% below the national median.
Demographics
Sullivan County has a population of 20,780, making it the #1,835 most populous county in the US. The median age is 41.7 years, which is 7.2% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Sullivan County is $56,204, ranking #2,396 out of 3,222 counties — 25.2% below the national median. The poverty rate is 13.9% and unemployment stands at 4.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Sullivan County is $131,100 (-53.5% vs national). Renters pay a median of $829/mo and the homeownership rate is 76.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Sullivan County, 14.6% of adults age 25+ hold a bachelor's degree or higher, which is 56.8% below the national average, ranking #2,876 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Sullivan County is 75.2 years. 20.2% of adults report poor or fair health and 7.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
21.1% of adults in Sullivan County smoke , 38.1% are obese , and 18.4% report excessive drinking. The drug overdose death rate is 17.6 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 18.9 per 100,000. Motor vehicle deaths occur at a rate of 19.3 per 100,000.
Suicide Rate Trend
Families & Children
18.9% of children in Sullivan County live in poverty . The teen birth rate is 28.6 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Sullivan County is 54.2%. The mean commute time is 27.8 min, which is 0.8% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Sullivan County voted Republican with a margin of 52.7%. The vote was 22.8% Dem / 75.5% Rep. Compared to 2020, the margin shifted 2.2 toward Republicans .
Vote Share Over Time
About Sullivan County, Indiana
Sullivan County, Indiana has a total population of 20,780, making it the 1,835th most populous county in the United States. The median age in Sullivan County is 41.7 years, which is 7.2% above the national median of 38.9 years.
The median household income in Sullivan County is $56,204, which ranks #2,396 of 3,222 counties nationwide. This is 25.2% below the national median of $75,149. The poverty rate is 13.9%, higher than the national rate of 12.6%. The unemployment rate stands at 4.4%.
The median home value in Sullivan County is $131,100, 53.5% below the national median. Renters in Sullivan County pay a median gross rent of $829 per month. The homeownership rate is 76.4%, compared to the national rate of 64.4%.
In Sullivan County, 14.6% of residents aged 25 and older hold a bachelor's degree or higher, 56.8% below the national average of 33.7%. Health insurance coverage stands at 93.2% of the population. The average commute time for workers is 27.8 min.
Sullivan County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 90.4% of the population, followed by Two or More Races (3.7%) and Black (non-Hispanic) (3.0%).
All data for Sullivan County, Indiana comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.