Johnson County
County in Kansas
Johnson County is a county in the U.S. state of Kansas, along the border of the state of Missouri. Its county seat is Olathe. As of the 2020 census, the population was 609,863, the most populous county in Kansas. Wikipedia
Cities: Olathe, Overland Park, Shawnee, and more
Population: 619,195 (2022)
Sales tax: 9.48%
Congressional district: 3rd
Founded: August 25, 1855
Largest city: Overland Park
Named for: Thomas Johnson
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