Marion County, Indiana Demographics 2026

Population Overview

Marion County is located in Indiana with a total population of 971,822. It is the 1st most populous county out of 92 in Indiana.

Age Demographics

The median age in Marion County is 34.3 years. This is 10% lower than the state median of 38.0 years.

Economy, Income & Housing

The median household income in Marion County is $63,450. This is 9% lower than the state median of $70,051. Compared to the national median of $78,538, household income here is 19% lower. The poverty rate stands at 15.1%. This is 24% higher than the state poverty rate of 12.2%. The unemployment rate is 5.1%. This is 19% higher than the state rate of 4.3%. The median home value is $207,000. Housing costs are 3% higher than the state median of $201,600. The home-value-to-income ratio is 3.3x. 55.9% of occupied housing units are owner-occupied. This homeownership rate is 20% lower than the state average of 70.3%.

Race & Ethnicity

The largest racial or ethnic group in Marion County is White (non-Hispanic), making up 50.5% of the population. Black or African American residents account for 27.3%. The Black or African American population is significantly higher than the state average (27.3% vs 9.1%). The Hispanic or Latino population is significantly higher than the state average (13.4% vs 8.4%). The Asian population is significantly higher than the state average (3.9% vs 2.5%).

Education

34.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Marion County in the top 10% of all cities in the state for educational attainment. This is 18% higher 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 87.7%.