Hamilton County, Indiana Demographics 2026

Population Overview

Hamilton County is located in Indiana with a total population of 357,176. It is the 4th most populous county out of 92 in Indiana.

Age Demographics

The median age in Hamilton County is 38.0 years. This is about average than the state median of 38.0 years.

Economy, Income & Housing

The median household income in Hamilton County is $117,957. This is 68% higher than the state median of $70,051. Compared to the national median of $78,538, household income here is 50% higher. The poverty rate stands at 4.3%. This is 64% lower than the state poverty rate of 12.2%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.8%. This is 35% lower than the state rate of 4.3%. The median home value is $379,100. Housing costs are 88% higher than the state median of $201,600. The home-value-to-income ratio is 3.2x. 76.3% of occupied housing units are owner-occupied. This homeownership rate is 8% higher than the state average of 70.3%.

Race & Ethnicity

The largest racial or ethnic group in Hamilton County is White (non-Hispanic), making up 79.7% of the population. Asian residents account for 6.7%. The Black or African American population (4.1%) is well below the state average of 9.1%. The Asian population is significantly higher than the state average (6.7% vs 2.5%).

Education

61.8% of residents aged 25 and older hold a bachelor's degree or higher. This places Hamilton County in the top 10% of all cities in the state for educational attainment. This is 115% 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 97.3%. Notably, 23.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.