Johnson County, Kansas

Johnson County (standard abbreviation: JO) is a county located in the state of Kansas. As of 2000, the population is 451,086. The county seat is Olathe. Johnson County has the 62nd highest median household income and 43rd highest per-person income in the United States and the highest median household income in Kansas. Most of Johnson County is suburban, being part of the greater Kansas City, Missouri area.

Cities and towns

• De Soto
• Edgerton
• Gardner
• Olathe
• Spring Hill
• Bonner Springs (of which only about 1 km² is inside the county, the majority being in Wyandotte County)

Shawnee Mission

Shawnee Mission is a postal designation emcompassing the portion of Johnson County which includes the following cities:

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• Countryside
• Fairway
• Lake Quivira
• Leawood
• Lenexa
• Merriam
• Mission
• Mission Hills
• Mission Woods
• Overland Park
• Prairie Village
• Roeland Park
• Shawnee
• Westwood
• Westwood Hills