Crossville is a village in White County, Illinois, United States. The population was 745 at the 2010 census. Crossville was laid out by surveyor John Mills in 1872 for Thomas Cross and Silas Elliott, and named for Thomas Cross. The original plat was one half mile square, located in Section 23, Township 4 South, Range 10 East of the 3rd Principal M…Crossville is a village in White County, Illinois, United States. The population was 745 at the 2010 census. Crossville was laid out by surveyor John Mills in 1872 for Thomas Cross and Silas Elliott, and named for Thomas Cross. The original plat was one half mile square, located in Section 23, Township 4 South, Range 10 East of the 3rd Principal Meridian.