In 2018, Clayton County, IA had a population of 17.7k people with a median age of 47.1 and a median household income of $52,828. Between 2017 and 2018 the population of Clayton County, IA declined from 17,711 to 17,672, a -0.22% decrease and its median household income grew from $51,114 to $52,828, a 3.35% increase.
The 5 largest ethnic groups in Clayton County, IA are White (Non-Hispanic) (96%), White (Hispanic) (1.41%), Black or African American (Non-Hispanic) (1.02%), Asian (Non-Hispanic) (0.447%), and Two+ (Non-Hispanic) (0.407%). NaNk% of the people in Clayton County, IA speak a non-English language, and 98.8% are U.S. citizens.
The median property value in Clayton County, IA is $121,000, and the homeownership rate is 75%. Most people in Clayton County, IA commute by Drove Alone, and the average commute time is 20.6 minutes. The average car ownership in Clayton County, IA is 2 cars per household.
Clayton County, IA borders Allamakee County, IA, Buchanan County, IA, Dubuque County, IA, Fayette County, IA, Delaware County, IA, Winneshiek County, IA, Crawford County, WI, and Grant County, WI.