Johnson County, Kansas

Johnson County
County
Former Johnson County Courthouse in Olathe (2009). It opened in 1952, closed in 2020, then demolished in 2021 after a new courthouse was finished.[1][2]
Location within the U.S. state of Kansas
Kansas's location within the U.S.
Coordinates: 38°52′N 94°52′W / 38.867°N 94.867°W / 38.867; -94.867
Country	United States
State	Kansas
Founded	August 25, 1855
Named for	Thomas Johnson
Seat	Olathe
Largest city	Overland Park
Area
• Total	480 sq mi (1,200 km2)
• Land	473 sq mi (1,230 km2)
• Water	6.5 sq mi (17 km2)  1.4%
Population  (2020)[3]
• Total	609,863
• Density	1,289.4/sq mi (497.8/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	3rd
Website	jocogov.org

Johnson County (county code JO) is a county in northeast Kansas. The county is part of the Kansas City metropolitan area. It contains many of the richer suburbs of Kansas City. As of the 2020 census, 609,863 people lived there.^[3] Its county seat is Olathe.^[4] The most populous city is Overland Park.

In 2010, Money magazine ranked Overland Park 7th and Shawnee 17th in its list of the 100 Best Cities in the United States in which to live.^[5] In 2008 the same magazine had ranked Olathe 11th.^[6]

1. ↑ "Demolition of old Johnson County Courthouse completed". Johnson County Government. August 26, 2021. Archived from the original on August 29, 2021.
2. ↑ "The New Johnson County Courthouse opens in Olathe, Kansas". Building Design & Construction. February 9, 2021. Archived from the original on August 29, 2021.
3. ↑ ^{3.0 3.1} "QuickFacts: Johnson County, Kansas". United States Census Bureau. Retrieved October 1, 2023.
4. ↑ "Find a County". National Association of Counties. Retrieved 2008-01-31.
5. ↑ "Money Magazine". CNN. Retrieved June 8, 2011.
6. ↑ "Best Places to Live 2008 – Kansas". Money Magazine. Retrieved 2008-08-11.