Sullivan city, Indiana Demographics & Population 2026

Population Overview

Sullivan city is a small community located in Indiana. The total population is 4,250. It ranks as the 144th most populous out of 967 cities and towns in Indiana.

Age Demographics

The median age in Sullivan city is 32.9 years. This is 13% lower than the state median of 38.0 years. With 30.4% of the population under 18, Sullivan city has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Sullivan city is $44,313. This is 37% lower than the state median of $70,051. Compared to the national median of $78,538, household income here is 44% lower. The poverty rate stands at 20.6%. This is 69% higher than the state poverty rate of 12.2%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 4.0%. This is 6% lower than the state rate of 4.3%. The median home value is $97,000. Housing costs are 52% lower than the state median of $201,600. With a home-value-to-income ratio of just 2.2x, Sullivan city is one of the most affordable housing markets in the area. 63.2% of occupied housing units are owner-occupied. This homeownership rate is 10% lower than the state average of 70.3%.

Race & Ethnicity

Sullivan city has a predominantly White (non-Hispanic) population, comprising 93.0% of all residents. Hispanic or Latino residents account for 0.7%. The Black or African American population (0.1%) is well below the state average of 9.1%. The Hispanic or Latino population (0.7%) is well below the state average of 8.4%.

Education

10.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 64% lower than the state rate of 28.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.0%.

Data Sources & Methodology

All demographic data for Sullivan city, Indiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.