Hardin County, Illinois

Hardin County
County
Hardin County Courthouse in Elizabethtown
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 37°31′53″N 88°22′06″W / 37.5314°N 88.3683°W / 37.5314; -88.3683
Country	United States
State	Illinois
Founded	1839
Named for	Hardin County, Kentucky
Seat	Elizabethtown
Largest city	Rosiclare
Area
• Total	182 sq mi (470 km2)
• Land	178 sq mi (460 km2)
• Water	4.1 sq mi (11 km2)  2.2%
Population  (2020)
• Total	3,649
• Density	20/sq mi (8/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	12th
Website	www.hardincountyil.org

Hardin County is a county located in the U.S. state of Illinois. According to the 2020 census, it has a population of 3,649,^[1] making it the least populous county in Illinois. Its county seat is Elizabethtown.^[2] Hardin County is located in the part of the state known as Little Egypt. Hardin County was named for Hardin County, Kentucky, which was named in honor of Colonel John Hardin, an officer in the American Revolutionary War and the Northwest Indian War.