Mount Vernon, Illinois

City: Mount Vernon

County: Jefferson

State: Illinois

Lat/Long: 38.3167, -88.9000

In 1819, commissioners appointed for the purpose chose a location for the county seat of Jefferson County, and the county commissioners' court named the new town Mt. Vernon. After 1848, Mt. Vernon was home to the Illinois Supreme Court.

William Henry Perrin, ed., History of Jefferson County, Illinois (Chicago: Globe, 1883), 136, 154, 281-83, 300-309.