St. Joseph County, Indiana Demographics 2026

Population Overview

St. Joseph County is located in Indiana with a total population of 272,574. It is the 5th most populous county out of 92 in Indiana.

Age Demographics

The median age in St. Joseph County is 36.7 years. This is 3% lower than the state median of 38.0 years.

Economy, Income & Housing

The median household income in St. Joseph County is $64,885. This is 7% lower than the state median of $70,051. Compared to the national median of $78,538, household income here is 17% lower. The poverty rate stands at 14.6%. This is 20% higher than the state poverty rate of 12.2%. The unemployment rate is 5.0%. This is 17% higher than the state rate of 4.3%. The median home value is $179,800. Housing costs are 11% lower than the state median of $201,600. With a home-value-to-income ratio of just 2.8x, St. Joseph County is one of the most affordable housing markets in the area. 68.8% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 70.3%.

Race & Ethnicity

The largest racial or ethnic group in St. Joseph County is White (non-Hispanic), making up 69.6% of the population. Black or African American residents account for 12.4%.

Education

32.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 13% 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 91.2%.