Washington County, Illinois
Lat/Long: 38.3500, -89.4333
Formed in 1818 out of St. Clair County and named for George Washington, Nashville is the seat of government. The Kaskaskia River runs through the western portion of the county.
Illinois Counties and Incorporated Municipalities (Springfield: Illinois Secretary of State, 2012), 2; John M. Peck, A Gazetteer of Illinois in Three Parts (Jacksonville, IL: R. Goudy, 1834), 166-67; James N. Adams, comp., Illinois Place Names (Springfield: Illinois State Historical Library, 1989), 607.