Simpson County is a county located in the south central portion of the U.S. state of Kentucky. As of the 2020 census, the total population was 19,594. Its county seat is Franklin.

History

Simpson County was established in 1819 from Allen, Logan, and Warren Counties. The county is named for Captain John Simpson, a Kentucky militia officer who fought in Battle of Fallen Timbers in the Northwest Indian War, and was killed during the War of 1812 in the Battle of River Raisin.

Geography

According to the United States Census Bureau, the county has a total area of , of which is land and (1.0%) is water. The county is located in the Pennyroyal Plateau region of the state.

Adjacent counties

  • Warren County (north)
  • Allen County (east)
  • Sumner County, Tennessee (southeast)
  • Robertson County, Tennessee (southwest)
  • Logan County (west)

Demographics