Washington County, Illinois

Washington County
Washington County
County
	Washington County Courthouse in Nashville
	Seal
	Location within the U.S. state of Illinois
	Illinois's location within the U.S.
	Coordinates: 38°21′N 89°25′W / 38.35°N 89.42°W
Country	United States
State	Illinois
Founded	January 2, 1818
Named for	George Washington
Seat	Nashville
Largest city	Nashville
Area
• Total	564 sq mi (1,460 km2)
• Land	563 sq mi (1,460 km2)
• Water	1.3 sq mi (3 km2) 0.2%
Population (2020)
• Total	13,761
• Density	24/sq mi (9.4/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	12th
Website	www.washingtonco.illinois.gov

Washington County is a county located in the U.S. state of Illinois. As of the 2020 census, it had a population of 13,761.^[1] Its county seat is Nashville.^[2] It is located in the southern portion of Illinois known locally as "Little Egypt".

^ "Washington County, Illinois". United States Census Bureau. Retrieved June 10, 2023.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.