Edgar County is a county located in the U.S. state of Illinois. As of the 2020 United States Census, the population was 16,866. Its county seat is Paris.

Paris is a city in Edgar County, Illinois, 165 miles (266 km) south of Chicago and 90 miles (140 km) west of Indianapolis. The population was 8,291 at the 2020 census. It is the county seat and largest city of Edgar County.