In 2018, Johnson County, KS had a population of 598k people with a median age of 37.8 and a median household income of $86,746. Between 2017 and 2018 the population of Johnson County, KS grew from 591,178 to 597,555, a 1.08% increase and its median household income grew from $82,855 to $86,746, a 4.7% increase.
The 5 largest ethnic groups in Johnson County, KS are White (Non-Hispanic) (79.7%), White (Hispanic) (6.04%), Asian (Non-Hispanic) (5.02%), Black or African American (Non-Hispanic) (4.43%), and Two+ (Non-Hispanic) (2.85%). 0% of the people in Johnson County, KS speak a non-English language, and 95.5% are U.S. citizens.
The largest universities in Johnson County, KS are Johnson County Community College (3,168 degrees awarded in 2019), Grantham University (1,830 degrees), and MidAmerica Nazarene University (623 degrees).
In 2018, the median property value in Johnson County, KS was $277,300, and the homeownership rate was 68.7%. Most people in Johnson County, KS drove alone to work, and the average commute time was 19.8 minutes. The average car ownership in Johnson County, KS was 2 cars per household.