Lat/Long: 42.0000, -89.3167
In 1836, commissioners appointed for the purpose chose a site for the county seat of newly-created Ogle County, which became the town of Oregon City. It later came to be known as Florence. The Illinois General Assembly changed the name to Oregon in 1843.
An Act to Establish Certain Counties; The History of Ogle County, Illinois (Chicago: H. F. Kett, 1878), 300, 312; James N. Adams, comp., Illinois Place Names (Springfield, IL: Illinois State Historical Society, 1989), 463-64; "An Act to Change the Name of the Town of Florence, Ogle County, to that of Oregon," 21 February 1843, Laws of Illinois (1843), 300.