Riley County, Kansas

Riley County
Riley County
County
	Riley County Courthouse in Manhattan (2005)
	Flag
	Location within the U.S. state of Kansas
	Kansas's location within the U.S.
	Coordinates: 39°06′47″N 96°37′41″W / 39.1131°N 96.6281°W
Country	United States
State	Kansas
Founded	August 25, 1855
Named for	Bennet C. Riley
Seat	Manhattan
Largest city	Manhattan
Area
• Total	622 sq mi (1,610 km2)
• Land	610 sq mi (1,600 km2)
• Water	12 sq mi (30 km2) 2.0%
Population (2020)
• Total	71,959
• Estimate (2021)	72,208
• Density	118.0/sq mi (45.6/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	1st
Website	rileycountyks.gov

Riley County is a county located in the U.S. state of Kansas. Its county seat and largest city is Manhattan.^[3] As of the 2020 census, the population was 71,959.^[1] The county was named after Bennet Riley, the 7th governor of California, and a Mexican–American War hero. Riley County is home to Fort Riley and Kansas State University.

^ ^a ^b "QuickFacts; Riley County, Kansas; Population, Census, 2020 & 2010". United States Census Bureau. Archived from the original on August 19, 2021. Retrieved August 19, 2021.
^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2021". Retrieved October 16, 2022.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.