In 2018, Delaware County, IA had a population of 17.3k people with a median age of 43.6 and a median household income of $61,179. Between 2017 and 2018 the population of Delaware County, IA declined from 17,326 to 17,258, a -0.392% decrease and its median household income grew from $60,534 to $61,179, a 1.07% increase.
The 5 largest ethnic groups in Delaware County, IA are White (Non-Hispanic) (96.8%), White (Hispanic) (0.968%), Two+ (Non-Hispanic) (0.892%), American Indian & Alaska Native (Non-Hispanic) (0.319%), and Black or African American (Non-Hispanic) (0.278%). 0% of the people in Delaware County, IA speak a non-English language, and 99.7% are U.S. citizens.
In 2018, the median property value in Delaware County, IA was $134,200, and the homeownership rate was 82.9%. Most people in Delaware County, IA drove alone to work, and the average commute time was 21.2 minutes. The average car ownership in Delaware County, IA was 2 cars per household.