Lafayette County, Missouri

Lafayette County
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 39°04′N 93°47′W / 39.06°N 93.78°W / 39.06; -93.78
Country United States
State Missouri
FoundedNovember 16, 1820
Named afterMarquis de La Fayette
SeatLexington
Largest cityOdessa
Area
  Total
639 sq mi (1,660 km2)
  Land628 sq mi (1,630 km2)
  Water11 sq mi (30 km2)  1.6%
Population
 (2020)
  Total
32,984
  Density52/sq mi (20/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.lafayettecountymo.com

Lafayette County is a county in the western portion of Missouri, part of the Kansas City metropolitan area. As of the 2020 census, the population was 32,984. Its county seat is Lexington. The county was organized November 16, 1820, from Cooper County and originally named Lillard County for James Lillard of Tennessee, who served in the first state constitutional convention and first state legislature. It was renamed Lafayette County on February 16, 1825, in honor of Revolutionary War hero the Marquis de La Fayette, who was then visiting the United States.