Marshall County, Kentucky

Marshall County
Marshall County Courthouse in Benton, Kentucky.
Location within the U.S. state of Kentucky
Kentucky's location within the U.S.
Coordinates: 36°53′N 88°20′W / 36.88°N 88.34°W / 36.88; -88.34
Country United States
State Kentucky
Founded1842
Named afterJohn Marshall
SeatBenton
Largest cityBenton
Area
  Total
340 sq mi (900 km2)
  Land301 sq mi (780 km2)
  Water39 sq mi (100 km2)  11%
Population
 (2020)
  Total
31,659
  Estimate 
(2024)
31,734
  Density93/sq mi (36/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district1st
Websitewww.marshallcountyky.gov

Marshall County is a county located in the far western portion of the U.S. state of Kentucky. As of the 2020 census, the population was 31,659. Its county seat is Benton.

It is the only Purchase Area county that does not border another state; a narrow strip of land in neighboring Livingston County separates Marshall County from the Ohio River and the Illinois border. Until July 28, 2015, it was a dry county. On that date residents approved alcohol sales for off-premises consumption, making it a "wet" county.