Montgomery County, Illinois
Lat/Long: 39.2333, -89.4833
The Illinois General Assembly created Montgomery County out of Bond County in 1821. Commissioners chose a site they called "Hamilton," about three miles southwest of present-day Hillsboro, for the county seat. After conflicts arose over acquisition of the privately owned land, in 1823 the General Assembly appointed a new commission, which located the county seat on the present site of Hillsboro, where it has remained.
"An Act Forming a New County Out of the County of Bond," 12 February 1821, Laws of Illinois (1821), 142-43; William Henry Perrin, ed., History of Bond and Montgomery Counties, Illinois (Chicago: O. L. Baskin, 1882), 186-87.