Greene County is a county located in the U.S. state of Illinois. According to the 2020 United States Census, it has a population of 11,843. Its county seat is Carrollton.
Greene County Courthouse
Carrollton is a city in and the county seat of Greene County, Illinois, United States. The population was 2,485 as of the 2020 census.
Carrollton Courthouse Square Historic District
Carrollton post office