About LaSalle County
LaSalle County is a city located in United States, in the Illinois region. According to the latest available data (2026), the population of LaSalle County is approximately 109,658 residents, making it the #774 most populous city in United States.
Globally, LaSalle County ranks #14,505 among the world's most populated cities.
LaSalle County City Statistics
| City | LaSalle County |
| Country |  United States |
| Population | 109,658 |
| Global Rank | #14,505 |
| Rank in United States | #774 of 867 cities |
| City Category | city |
| Region | Illinois |
| Latitude | 41.344 |
| Longitude | -88.886 |
| Data Year | 2026 |
Where is LaSalle County Located?
LaSalle County is located in United States, in the Illinois region, at coordinates 41.344° latitude and -88.886° longitude. Located in the mid-latitudes, LaSalle County experiences distinct four-season weather patterns.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of LaSalle County?
The population of LaSalle County is approximately 109,658 residents according to the latest available data (2026).
Where is LaSalle County located?
LaSalle County is located in United States at approximately 41.344° latitude and -88.886° longitude.
Is LaSalle County one of the largest cities in United States?
With a population of 109,658, LaSalle County is one of the notable urban areas in United States. It ranks #774 out of 867 cities in the country.
