The city of LaSalle, mistakenly spelled La Salle, is located in LaSalle County, Illinois, at the intersection of Interstate 80 and Interstate 39. Originally platted in 1837 over one square mile, the city has grown to 12 square miles. City boundaries extend from the Illinois River and Illinois Michigan Canal to a mile north of Interstate 80 and from the city of Peru on the west to the village of North Utica on the east. Starved Rock State Park is located approximately 5 miles to the east. The population was 9,796 at the 2000 census. LaSalle's industries include cement and potassium permanganate products. La Salle apartments for rent comparison page shows most up to date rent information on La Salle apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.