Cities & Towns in LaSalle County, IL

LaSalle County, county in Illinois, United States. As of 2020 county had an estimated population of 107,571 inhabitants. The county was created 193 years ago in 1831. Its county seat is Ottawa.

There are 2 city/town in LaSalle County, IL. The largest city of LaSalle County is Ottawa with a population of 18,097. Other cities include and Oglesby population 3,526

Ottawa
Ottawa

Ottawa, City in Illinois, United States

Oglesby
Oglesby

Oglesby, City in LaSalle Co.

Surrounded by rural farmland and the Illinois River valley, LaSalle County in north-central Illinois offers visitors a glimpse into classic Midwest living. The city of Ottawa serves as the county seat, featuring historic architecture and riverfront views in its quaint downtown area. The industrial city of LaSalle sits right along the Illinois River and the Illinois & Michigan Canal.

Smaller farming towns like Earlville, Leland, and Mendota retain their agricultural roots and charm, with grain silos and farms dotting the countryside around their compact downtowns. The city of Streator boasts beautiful parks and buildings constructed of native bedrock and clay tile. Marseilles and Naplate both border the Illinois River and provide access to outdoor recreation.

Dotted with state and county parks and crisscrossed by hiking and biking trails, LaSalle County's mix of historic cities, industrial river towns, and rural farming communities offer the perfect glimpse into life in the Midwest. The area provides abundant opportunities to experience the region’s natural beauty, agricultural heritage, and architectural legacy along the Illinois River valley. Whether you’re looking for outdoor activities or small town charm, LaSalle County has something for you.

All LaSalle County Cities (Aphebetical)

List of cities, towns, neighborhoods & other populated places in LaSalle County.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
City Name Title Population
Oglesby City in LaSalle Co. 3,526
Ottawa City in Illinois, United States 18,097
0

County Cities on Map (2)

Illinois Counties (102)

Cook County (5,108,284) DuPage County (917,481) Lake County (693,593) Will County (688,726) Kane County (531,010) McHenry County (305,888) Winnebago County (281,295) Madison County (262,635) Saint Clair County (258,046) Champaign County (209,192) Sangamon County (193,882) Peoria County (177,652) McLean County (171,256) Rock Island County (140,907) Tazewell County (130,777) Kendall County (130,638) Kankakee County (108,594) LaSalle County (107,571) DeKalb County (104,491) Macon County (103,015) Vermilion County (74,855) Williamson County (66,415) Adams County (64,783) Jackson County (56,675) Whiteside County (54,656) Boone County (52,777) Grundy County (50,993) Coles County (50,383) Ogle County (50,306) Knox County (49,053) Henry County (48,411) Macoupin County (44,567) Stephenson County (43,831) Woodford County (38,091) Franklin County (38,060) Clinton County (37,398) Jefferson County (37,235) Marion County (37,045) Livingston County (35,414) Monroe County (34,739) Effingham County (34,065) Fulton County (33,690) Lee County (33,647) Morgan County (33,400) Bureau County (32,303) Christian County (32,075) Randolph County (31,351) McDonough County (29,295) Logan County (28,383) Montgomery County (28,045) Iroquois County (26,711) Saline County (23,182) Jersey County (21,616) Shelby County (21,299) Fayette County (21,264) Jo Daviess County (21,239) Perry County (20,664) Douglas County (19,510) Crawford County (18,512) Hancock County (17,422) Edgar County (16,858) Warren County (16,696) Union County (16,498) Piatt County (16,355) Bond County (16,262) Wayne County (16,031) Richland County (15,507) Lawrence County (15,467) De Witt County (15,368) Clark County (15,268) Pike County (15,239) Mercer County (15,225) Moultrie County (14,347) Carroll County (14,241) Washington County (13,764) Massac County (13,636) White County (13,364) Mason County (13,173) Clay County (13,079) Ford County (12,949) Greene County (12,702) Johnson County (12,358) Menard County (12,068) Cass County (11,925) Marshall County (11,309) Wabash County (11,190) Cumberland County (10,649) Jasper County (9,465) Hamilton County (8,084) Schuyler County (6,738) Brown County (6,546) Henderson County (6,535) Edwards County (6,356) Putnam County (5,716) Alexander County (5,497) Stark County (5,262) Pulaski County (5,201) Scott County (4,950) Gallatin County (4,793) Calhoun County (4,616) Pope County (4,142) Hardin County (3,808)