Jefferson County, Indiana Demographics 2026

Population Overview

Jefferson County is located in Indiana with a total population of 32,998. It is the 51st most populous county out of 92 in Indiana. The county encompasses 6 Census-designated places.

Age Demographics

The median age in Jefferson County is 41.8 years. This is 10% higher than the state median of 38.1 years.

Economy, Income & Housing

The median household income in Jefferson County is $64,577. This is 10% lower than the state median of $71,957. It is also 20% lower than the national median of $80,734. The poverty rate stands at 12.3%. This is about the same as the state poverty rate of 12.3%. The unemployment rate is 4.4%. This is 3% higher than the state rate of 4.3%. The median home value is $194,600. Housing costs are 11% lower than the state median of $218,200. The home-value-to-income ratio is 3.0x. 71.8% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 70.5%.

Race & Ethnicity

Jefferson County has a predominantly White (non-Hispanic) population, comprising 91.0% of all residents. Hispanic or Latino residents account for 3.5%. The Black or African American population (1.0%) is well below the state average of 9.1%. The Hispanic or Latino population (3.5%) is well below the state average of 8.6%. The Asian population (0.8%) is well below the state average of 2.6%.

Education

19.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 33% 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 90.0%.

Data Sources & Methodology

All figures for Jefferson County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Indiana and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.