Ohio County, Kentucky

Ohio County
Ohio County Courthouse in Hartford
Location within the U.S. state of Kentucky
Kentucky's location within the U.S.
Coordinates: 37°28′N 86°50′W / 37.47°N 86.84°W / 37.47; -86.84
Country United States
State Kentucky
FoundedDecember 17, 1798
Named afterThe Ohio River
SeatHartford
Largest cityBeaver Dam
Government
  Judge/ExecutiveDavid Johnston
Area
  Total
596 sq mi (1,540 km2)
  Land587 sq mi (1,520 km2)
  Water9.0 sq mi (23 km2)  1.5%
Population
 (2020)
  Total
23,772
  Estimate 
(2024)
23,933
  Density40/sq mi (15/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websiteohiocounty.ky.gov

Ohio County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 23,772. Its county seat is Hartford, and its largest city is Beaver Dam. The county is named after the Ohio River, which originally formed its northern border. It is a moist county, which means that the sale of alcohol is only legal within certain city limits.