La Salle County (LaSalle County), Illinois
La Salle County: County in Illinois, United States
About
LaSalle County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 113,924 and a population density of 38 people per km². After 10 years in 2020 county had an estimated population of 107,571 inhabitants. Its county seat is Ottawa. The county was created 194 years ago in 1831.
Quick Facts about LaSalle County
| Population : | 107,571 (2020) |
| Country : | United States of America |
| State : | Illinois (United States) |
| Different from : | La Salle County, La Salle Parish |
| Area : | 2973 km2 |
| Water as percent of area : | 1.1% |
| Land as percent of area : | 98.9% |
| Named for : | René-Robert Cavelier, Sieur de La Salle |
| Altitude : | 646 feet / 197 meters |
| Capital : | Ottawa |
| Establishment : | January 01, 1831 |
| Time Zone : | America/Chicago |
| Local time : | 17:09:15 (22nd February 2025) |
| Density : | 36 Pop. per km² as of 2020 |
| Population growth : | -5.91% (2010-2020) |
Geography
LaSalle County is located at 41°20'38"N 88°53'9"W (41.3439900, -88.8859500). It has 8 neighbors: Bureau County, DeKalb County, Grundy County, Lee County, Livingston County, Marshall County, Putnam County and Woodford County.
La Salle County map
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The largest city of LaSalle County is Ottawa with a population of 18,097. Other cities include, Streator population 12,933, Peru population 9,612, La Salle population 9,609 and Marseilles population 4,778. See all LaSalle County cities & populated places.
LaSalle County Populated Places (more)
Cities, towns, neighborhoods & other populated places in LaSalle County.
| City Name | Population | Title |
|---|---|---|
| Ottawa | 18,097 | City in Illinois, United States |
| Streator | 12,933 | City in Illinois |
| Peru | 9,612 | City in Illinois, United States |
| La Salle | 9,609 | City in LaSalle County, Illinois, United States |
| Mendota | 6,904 | Township in LaSalle County, Illinois |
| Northville | 6,753 | Township in LaSalle County, Illinois |
| Marseilles | 4,778 | City in LaSalle County, Illinois |
| Deer Park | 4,199 | Village in United States of America |
| Oglesby | 3,526 | City in LaSalle Co. |
| Sheridan | 2,515 | Village in Illinois, United States |
| Seneca | 2,179 | Village in Illinois |
| Utica | 1,988 | Village also known as Utica, in LaSalle County, Illinois |
| Earlville | 1,570 | City in Delaware County, Iowa, United States of America |
| Garfield | 1,483 | Human settlement in Illinois, United States of America |
| Serena | 1,088 | Human settlement in Illinois, United States of America |
| Leland | 902 | Village in Illinois, United States |
- Official Website
Official website of LaSalle County
LaSalle County has 8 neighbours.
- Bureau County county in Illinois, United States
- DeKalb County county in Illinois, United States
- Grundy County county in Illinois, United States
- Lee County county in Illinois, United States
- Livingston County county in Illinois, United States of America
- Marshall County county in Illinois, United States
- Putnam County county in Illinois, United States
- Woodford County county in Illinois, United States
Demographics
According to census records, the population of LaSalle County decreased by 5.91% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 113,924 | - | census |
| 2011 | 113,533 | -0.34% | estimation process |
| 2012 | 112,918 | -0.54% | estimation process |
| 2013 | 112,430 | -0.43% | estimation process |
| 2014 | 111,660 | -0.69% | estimation process |
| 2015 | 111,019 | -0.58% | estimation process |
| 2016 | 110,215 | -0.73% | estimation process |
| 2017 | 109,622 | -0.54% | estimation process |
| 2018 | 109,159 | -0.42% | estimation process |
| 2019 | 108,669 | -0.45% | estimation process |
| 2020 | 107,571 | -1.02% | estimation process |
People born in LaSalle County (8)
People born in LaSalle County, including paleontologist Stephen L. Brusatte, politician Dwight M. Sabin, violinist Maud Powell, .
List
- Kate Austin (American journalist/advocate of feminist/anarchist causes) she was born in 25/07/1864
- William Scherzer (American engineer) he was born in 27/01/1858
- Deacon Van Buren (American baseball player) he was born in 14/12/1870
- Si Johnson (American baseball player) he was born in 05/10/1906
- Harry Haviland Osgood (Born September 1875, in Illinois; died 1960. American, Painter.) he was born in 01/09/1875
Other places with the same name (2)
- La Salle County , Texas county in Texas, United States with a population of 7,500 people.
Illinois Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Cook County | 5,108,284 | County in Illinois, United States |
| Chicago | 2,677,643 | The third most populous city in the United States and the center of the Chicago metropolitan area. |
| DuPage County | 917,481 | County in Illinois, United States |
| Lake County | 693,593 | County in Oregon, United States |
| Will County | 688,726 | County in Illinois, United States |
| Kane County | 531,010 | County in southern Utah, United States |
| McHenry County | 305,888 | County in Illinois, United States |
| Winnebago County | 281,295 | County in Illinois, United States |
| Madison County | 262,635 | County in Montana, United States |
| Saint Clair County | 258,046 | The County of St. |
| Champaign County | 209,192 | County in Illinois, United States |
| Aurora | 196,383 | The second most populous city in Illinois. |
| Sangamon County | 193,882 | County in Illinois, United States |
| Peoria County | 177,652 | County in Illinois, United States of America |
| McLean County | 171,256 | County in North Dakota, United States |
| Naperville | 147,986 | The second most populous city in Illinois. |
