In 2018, Madison County, IA had a population of 15.9k people with a median age of 40.1 and a median household income of $64,512. Between 2017 and 2018 the population of Madison County, IA grew from 15,720 to 15,890, a 1.08% increase and its median household income grew from $60,077 to $64,512, a 7.38% increase.
The 5 largest ethnic groups in Madison County, IA are White (Non-Hispanic) (95.5%), White (Hispanic) (1.78%), Asian (Non-Hispanic) (1.14%), Two+ (Non-Hispanic) (0.969%), and Black or African American (Non-Hispanic) (0.233%). 0% of the households in Madison County, IA speak a non-English language at home as their primary language, and 99.3% of the residents in Madison County, IA are U.S. citizens.
In 2018, the median property value in Madison County, IA was $166,500, and the homeownership rate was 78.5%. Most people in Madison County, IA drove alone to work, and the average commute time was 25.7 minutes. The average car ownership in Madison County, IA was 2 cars per household.