Montgomery County, Ohio Demographics 2026

Population Overview

Montgomery County is located in Ohio with a total population of 536,096. It is the 5th most populous county out of 88 in Ohio. The county encompasses 25 Census-designated places.

Age Demographics

The median age in Montgomery County is 38.8 years. This is 2% lower than the state median of 39.7 years.

Economy, Income & Housing

The median household income in Montgomery County is $66,139. This is 7% lower than the state median of $71,389. It is also 18% lower than the national median of $80,734. The poverty rate stands at 15.0%. This is 13% higher than the state poverty rate of 13.3%. The unemployment rate is 5.7%. This is 20% higher than the state rate of 4.8%. The median home value is $180,900. Housing costs are 16% lower than the state median of $214,800. With a home-value-to-income ratio of just 2.7x, Montgomery County is one of the most affordable housing markets in the area. 62.5% of occupied housing units are owner-occupied. This homeownership rate is 7% lower than the state average of 67.2%.

Race & Ethnicity

The largest racial or ethnic group in Montgomery County is White (non-Hispanic), making up 67.7% of the population. Black or African American residents account for 20.3%. The Black or African American population is significantly higher than the state average (20.3% vs 12.0%).

Education

31.3% of residents aged 25 and older hold a bachelor's degree or higher. This is about the same as the state rate of 31.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.7%.

Data Sources & Methodology

All figures for Montgomery County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Ohio 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.