Delaware County, Ohio Demographics 2026

Population Overview

Delaware County is located in Ohio with a total population of 221,160. It is the 13th most populous county out of 88 in Ohio. The county encompasses 6 Census-designated places.

Age Demographics

The median age in Delaware County is 39.9 years. This is about average than the state median of 39.6 years.

Economy, Income & Housing

The median household income in Delaware County is $130,088. This is 87% higher than the state median of $69,680. Compared to the national median of $78,538, household income here is 66% higher. The poverty rate stands at 5.1%. This is 62% lower than the state poverty rate of 13.2%. The unemployment rate is 3.0%. This is 39% lower than the state rate of 4.9%. The median home value is $419,500. Housing costs are 111% higher than the state median of $199,200. The home-value-to-income ratio is 3.2x. 78.2% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 67.0%.

Race & Ethnicity

The largest racial or ethnic group in Delaware County is White (non-Hispanic), making up 80.4% of the population. Asian residents account for 7.9%. The Black or African American population (4.1%) is well below the state average of 12.1%. The Asian population is significantly higher than the state average (7.9% vs 2.4%).

Education

58.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Delaware County in the top 10% of all cities in the state for educational attainment. This is 88% higher than the state rate of 30.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.1%. Notably, 23.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.