Platte County, Missouri

Platte County
Platte County
County
	Platte County Courthouse
	Flag
	Location within the U.S. state of Missouri
	Missouri's location within the U.S.
	Coordinates: 39°23′N 94°46′W / 39.38°N 94.77°W
Country	United States
State	Missouri
Founded	December 31, 1838
Named for	Platte River or Platte Purchase
Seat	Platte City
Largest city	Kansas City
Area
• Total	427 sq mi (1,110 km2)
• Land	420 sq mi (1,100 km2)
• Water	6.6 sq mi (17 km2) 1.5%
Population (2020)
• Total	106,718
• Density	250/sq mi (96/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	6th
Website	www.co.platte.mo.us

Platte County is a county located in the northwestern portion of the U.S. state of Missouri and is part of the Kansas City metropolitan area. As of the 2020 census, the population was 106,718. Its county seat is Platte City.^[1] The county was organized December 31, 1838,^[2] from the Platte Purchase,^[3] named for the Platte River. (Platte is derived from the French word for a low, shallow, or intermittent stream.) The Kansas City International Airport is located in the county, approximately one mile west of Interstate 29 between mile markers 12 and 15. The land for the airport was originally in an unincorporated portion of Platte County before being annexed by Platte City, and eventually Kansas City.

^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
^ "Platte County History". Platte County, Missouri. Archived from the original on March 24, 2015. Retrieved November 25, 2014.
^ Soil Survey (Platte County, Missouri ed.). U.S. Dept of Agriculture. 1923. p. 2. Retrieved January 19, 2015.

[GR6-1] "Find a County". National Association of Counties. Retrieved June 7, 2011.

[2] "Platte County History". Platte County, Missouri. Archived from the original on March 24, 2015. Retrieved November 25, 2014.

[3] Soil Survey (Platte County, Missouri ed.). U.S. Dept of Agriculture. 1923. p. 2. Retrieved January 19, 2015.

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