Fayette County, Illinois

Fayette County
County
Fayette County Courthouse in Vandalia
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 39°00′N 89°01′W
Country	United States
State	Illinois
Founded	1821
Named for	Marquis de Lafayette
Seat	Vandalia
Largest city	Vandalia
Area
• Total	725 sq mi (1,880 km2)
• Land	716 sq mi (1,850 km2)
• Water	8.9 sq mi (23 km2)  1.2%
Population  (2020)
• Total	21,488
• Density	30/sq mi (11/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Website	www.fayettecountyillinois.org

Fayette County is a county in Illinois.