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.

Geography

According to the U.S. Census Bureau, the county has a total area of 1,244 km² (480 mi²). 1,235 km² (477 mi²) of it is land and 9 km² (3 mi²) of it is water. The total area is 0.70% water.

Related Topics:
U.S. Census Bureau - Km² - Mi²

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Adjacent counties

• Wyandotte County, Kansas (north)
• Jackson County, Missouri (east)
• Cass County, Missouri (southeast)
• Miami County, Kansas (south)
• Franklin County, Kansas (southwest)
• Douglas County, Kansas (west)
• Leavenworth County, Kansas (northwest)