Dubuque County, Iowa Demographics 2026

Population Overview

Dubuque County is located in Iowa with a total population of 98,948. It is the 8th most populous county out of 99 in Iowa. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Dubuque County is 38.8 years. This is about average than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Dubuque County is $75,919. 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 9.4%. This is 14% lower than the state poverty rate of 11.0%. The unemployment rate is 3.8%. This is 4% higher than the state rate of 3.6%. The median home value is $226,100. Housing costs are 15% higher than the state median of $195,900. The home-value-to-income ratio is 3.0x. 73.2% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 71.5%.

Race & Ethnicity

Dubuque County has a predominantly White (non-Hispanic) population, comprising 88.9% of all residents. Hispanic or Latino residents account for 3.1%. The Hispanic or Latino population (3.1%) is well below the state average of 7.0%. The Asian population (1.2%) is well below the state average of 2.4%.

Education

32.9% of residents aged 25 and older hold a bachelor's degree or higher. This places Dubuque County in the top 10% of all cities in the state for educational attainment. This is 6% 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 94.1%.