Delaware County, Iowa Demographics 2026

Population Overview

Delaware County is located in Iowa with a total population of 17,549. It is the 40th most populous county out of 99 in Iowa.

Age Demographics

The median age in Delaware County is 44.0 years. This is 14% higher than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Delaware County is $76,205. This is 4% higher than the state median of $73,147. Compared to the national median of $78,538, household income here is 3% lower. The poverty rate stands at 7.9%. This is 28% lower than the state poverty rate of 11.0%. The unemployment rate is 2.1%. This is 42% lower than the state rate of 3.6%. The median home value is $168,700. Housing costs are 14% lower than the state median of $195,900. With a home-value-to-income ratio of just 2.2x, Delaware County is one of the most affordable housing markets in the area. 82.4% of occupied housing units are owner-occupied. This homeownership rate is 15% higher than the state average of 71.5%.

Race & Ethnicity

Delaware County has a predominantly White (non-Hispanic) population, comprising 95.1% of all residents. Hispanic or Latino residents account for 1.6%. The Black or African American population (0.0%) is well below the state average of 3.8%. The Hispanic or Latino population (1.6%) is well below the state average of 7.0%. The Asian population (0.1%) is well below the state average of 2.4%.

Education

19.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 36% lower 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 92.2%.