LaSalle is a city in
LaSalle County,
Illinois,
United States, located at the intersection of Interstates
39 and
80. It is part of the
Ottawa-Peru, IL Micropolitan Statistical Area. Originally
platted in 1837 over , the city's boundaries have grown to . City boundaries extend from the
Illinois River and
Illinois and 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 to the east. The population was 9,609 at the 2010 census, and was estimated to be 9,328 by July 2013. LaSalle and its twin city,
Peru, make up the core of the Illinois Valley. Due to their combined dominance of the zinc processing industry in the early 1900s, they were collectively nicknamed "Zinc City."