Will County, Illinois
Lat/Long: 41.4333, -87.9667
The Illinois legislature created Will county in 1836, out of portions of Cook and Iroquois counties. In 1853, the southern portion of the county was removed to create Kankakee County. The legislature designated Joliet as the county's seat at its creation, and it has remained there.
An Act to Establish the County of Will; "An Act to Establish the County of Kankakee, and for Other Purposes Therein Named," 11 February 1853, General Laws of the State of Illinois, Passed by the Eighteenth General Assembly (1853), 159-63.