Sullivan, Indiana Demographics & Population 2026
During the 2020–2024 ACS period, Sullivan, Indiana had a total population of 4,252, the 145th largest city in Indiana, with a median household income of $46,551, which is 35% lower than the state average. The poverty rate is 19.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 35% below the state average, indicating significant economic challenges.
Sullivan Quick Facts
How Sullivan Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 4,250 | 4,252 | +0.0% |
| Median household income | $44,313 | $46,551 | +5.1% |
| Median home value | $97,000 | $128,100 | +32.1% |
How Sullivan Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Sullivan Rankings in Indiana
Explore Indiana Rankings
Other Cities in Sullivan County
Cities Similar to Sullivan
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Mitchell | 3,937 | $48,930 | $114,500 | 14.4% | 20.7% |
| Ligonier | 4,347 | $59,359 | $110,000 | 11.5% | 6.6% |
| North Terre Haute | 4,534 | $54,640 | $152,900 | 19.4% | 15.7% |
| Clinton | 4,794 | $42,922 | $101,600 | 17.5% | 21.4% |
| Aurora | 3,648 | $47,470 | $131,400 | 12.3% | 18.5% |
Population Overview
Sullivan is a small community located in Indiana, within Sullivan County. The total population is 4,252. It ranks as the 145th most populous out of 967 Census-designated places in Indiana.
Age Demographics
The median age in Sullivan is 33.2 years. This is 13% lower than the state median of 38.1 years. With 30.8% of the population under 18, Sullivan has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Sullivan is $46,551. This is 35% lower than the state median of $71,957. It is also 42% lower than the national median of $80,734. The poverty rate stands at 19.6%. This is 59% higher than the state poverty rate of 12.3%. The unemployment rate is 3.4%. This is 22% lower than the state rate of 4.3%. The median home value is $128,100. Housing costs are 41% lower than the state median of $218,200. With a home-value-to-income ratio of just 2.8x, Sullivan is one of the most affordable housing markets in the area. 64.5% of occupied housing units are owner-occupied. This homeownership rate is 9% lower than the state average of 70.5%.
Race & Ethnicity
Sullivan has a predominantly White (non-Hispanic) population, comprising 90.6% of all residents. Hispanic or Latino residents account for 1.1%. The Black or African American population (0.3%) is well below the state average of 9.1%. The Hispanic or Latino population (1.1%) is well below the state average of 8.6%.
Education
12.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 56% lower than the state rate of 29.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.3%.
Data Sources & Methodology
All demographic data for Sullivan, Indiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Indiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 967 Census-designated places in Indiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Sullivan, Indiana?
Sullivan, Indiana has a population of 4,252 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sullivan, IN?
The median household income in Sullivan is $46,551, which is 42% lower than the national median of $80,734.
What is the poverty rate in Sullivan, IN?
The poverty rate in Sullivan is 19.6%. This means approximately 820 residents live below the federal poverty line.
What is the racial makeup of Sullivan, Indiana?
Sullivan's population is 90.6% White, 0.3% Black, 1.1% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Sullivan, IN?
The median home value in Sullivan is $128,100. The home-value-to-income ratio is 2.8x.
How educated is Sullivan, Indiana?
12.8% of adults (25+) in Sullivan hold a bachelor's degree or higher, and 3.8% hold a graduate or professional degree.