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QuickFacts

Bureau County, Illinois; Morgan County, Illinois; Spring Valley city, Illinois

QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.

Chart

Population estimates, July 1, 2023, (V2023)

0
510,000
1,020,000
1,530,000
2,040,000
2,550,000
3,060,000
3,570,000
4,080,000
4,590,000
5,100,000
Cook County, Illinois
5,087,072
DuPage County, Illinois
921,213
Lake County, Illinois
708,760
Will County, Illinois
700,728
Kane County, Illinois
514,982
McHenry County, Illinois
312,800
Winnebago County, Illinois
280,922
Madison County, Illinois
262,752
St. Clair County, Illinois
251,018
Champaign County, Illinois
205,644
Sangamon County, Illinois
193,491
Peoria County, Illinois
177,513
McLean County, Illinois
170,441
Rock Island County, Illinois
141,236
Kendall County, Illinois
139,976
Tazewell County, Illinois
129,541
LaSalle County, Illinois
108,309
Kankakee County, Illinois
105,940
Macon County, Illinois
100,591
DeKalb County, Illinois
100,288
Vermilion County, Illinois
71,652
Williamson County, Illinois
66,706
Adams County, Illinois
64,441
Whiteside County, Illinois
54,498
Grundy County, Illinois
53,578
Boone County, Illinois
53,202
Jackson County, Illinois
52,141
Ogle County, Illinois
51,265
Henry County, Illinois
48,448
Knox County, Illinois
48,411
Coles County, Illinois
46,060
Macoupin County, Illinois
44,018
Stephenson County, Illinois
43,105
Woodford County, Illinois
38,285
Franklin County, Illinois
37,138
Clinton County, Illinois
36,785
Marion County, Illinois
36,673
Jefferson County, Illinois
36,320
Livingston County, Illinois
35,320
Monroe County, Illinois
34,957
Effingham County, Illinois
34,331
Lee County, Illinois
33,654
Christian County, Illinois
33,228
Bureau County, Illinois
32,729
Fulton County, Illinois
32,541
Morgan County, Illinois
32,140
Randolph County, Illinois
29,815
Montgomery County, Illinois
27,663
Logan County, Illinois
27,590
McDonough County, Illinois
26,839
Iroquois County, Illinois
26,136
Saline County, Illinois
22,873
Jo Daviess County, Illinois
21,756
Fayette County, Illinois
21,164
Jersey County, Illinois
21,091
Shelby County, Illinois
20,568
Perry County, Illinois
20,503
Douglas County, Illinois
19,629
Crawford County, Illinois
18,300
Hancock County, Illinois
17,186
Piatt County, Illinois
16,714
Union County, Illinois
16,667
Bond County, Illinois
16,450
Edgar County, Illinois
16,334
Warren County, Illinois
16,185
Wayne County, Illinois
15,761
Carroll County, Illinois
15,526
Richland County, Illinois
15,488
Mercer County, Illinois
15,487
De Witt County, Illinois
15,365
Clark County, Illinois
15,088
Lawrence County, Illinois
14,813
Pike County, Illinois
14,342
Moultrie County, Illinois
14,342
Massac County, Illinois
13,661
Washington County, Illinois
13,536
White County, Illinois
13,401
Johnson County, Illinois
13,326
Ford County, Illinois
13,250
Clay County, Illinois
12,999
Cass County, Illinois
12,596
Mason County, Illinois
12,523
Menard County, Illinois
11,954
Marshall County, Illinois
11,683
Greene County, Illinois
11,543
Wabash County, Illinois
10,942
Cumberland County, Illinois
10,261
Jasper County, Illinois
9,144
Hamilton County, Illinois
7,911
Schuyler County, Illinois
6,733
Brown County, Illinois
6,294
Henderson County, Illinois
6,088
Edwards County, Illinois
5,968
Putnam County, Illinois
5,561
Stark County, Illinois
5,218
Pulaski County, Illinois
4,911
Scott County, Illinois
4,710
Alexander County, Illinois
4,695
Gallatin County, Illinois
4,670
Calhoun County, Illinois
4,317
Pope County, Illinois
3,707
Hardin County, Illinois
3,569
0
510,000
1,020,000
1,530,000
2,040,000
2,550,000
3,060,000
3,570,000
4,080,000
4,590,000
5,100,000
Value Notes

Methodology differences may exist between data sources, and so estimates from different sources are not comparable.

Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.

The vintage year (e.g., V2023) refers to the final year of the series (2020 thru 2023). Different vintage years of estimates are not comparable.

Users should exercise caution when comparing 2018-2022 ACS 5-year estimates to other ACS estimates. For more information, please visit the 2022 5-year ACS Comparison Guidance page.

Fact Notes Value Flags

QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

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