La Salle County, Illinois
County: La Salle
Lat/Long: 41.3500, -88.8833
In 1831, the Illinois General Assembly created La Salle County out of Putnam County and unorganized territory south of the Illinois River. Ottawa was designated as the county seat.
“An Act to Create and Organize the Counties therein Named,” 15 January 1831, Laws of Illinois (1831), 54-57; John Clayton, comp., The Illinois Fact Book and Historical Almanac, 1673-1968 (Carbondale: Southern Illinois University Press, 1970), 32.