Blue Earth County, Minnesota

Blue Earth County
Blue Earth County
County
	Blue Earth County Courthouse
	Location within the U.S. state of Minnesota
	Minnesota's location within the U.S.
	Coordinates: 44°02′N 94°04′W / 44.03°N 94.06°W
Country	United States
State	Minnesota
Founded	March 5, 1853
Named for	Blue Earth River
Seat	Mankato
Largest city	Mankato
Area
• Total	766 sq mi (1,980 km2)
• Land	748 sq mi (1,940 km2)
• Water	18 sq mi (50 km2) 2.3%
Population (2020)
• Total	69,112
• Estimate (2023)	70,006
• Density	90/sq mi (35/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	1st
Website	www.co.blue-earth.mn.us

Blue Earth County is a county in the State of Minnesota. As of the 2020 census, the population was 69,112.^[2] Its county seat is Mankato.^[3] The county is named for the Blue Earth River and for the deposits of blue-green clay once evident along the banks of the Blue Earth River. Blue Earth County is part of the Mankato-North Mankato metropolitan area.

^ "Minnesota Place Names". Minnesota Historical Society. Archived from the original on June 20, 2012. Retrieved March 17, 2014.^{[dead link]}
^ "State & County QuickFacts". United States Census Bureau. Retrieved April 8, 2023.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.