LaSalle County ILGenWeb is a free genealogical site about the history of
the county. We hope you find helpful clues for your research of ancestors
and relatives of LaSalle county.
Are you familiar with the area? Do you have a family tree connection to the area? Volunteers are always needed! Please consider contributing your pieces of LaSalle County family history. Corrections, updates, and additions to this site are always welcome.
This county is adoptable.
See this webpage for more information if you are interested.
Contact: ILGenWeb State Coordinator
LaSalle
County was established in 15 Jan 1831 from parts of
Putnam and
unorganized
Tazewell Counties.
LaSalle County was named for the famous French explorer Robert de la Salle.
The original LaSalle County covered parts of present-day Kendall, Livingston and Marshall counties. Its current boundaries were established in 1843.
| Lee | DeKalb | Kane |
| Bureau |
 |
Kendall |
| Putnam | Grundy | |
| Marshall | Woodford | Livingston |
