Combined Statistical Area
|
2019 Population
|
Core Based Statistical Area
|
2019 Population
|
County
|
2019 Population
|
Metropolitan Division
|
2019 Population
|
Chicago-Naperville, IL-IN-WI CSA
|
9,825,325 8,842,474
|
Chicago-Naperville-Elgin, IL-IN-WI MSA
|
9,458,539 8,585,550
|
Cook County, Illinois
|
5,150,233
|
Chicago-Naperville-Evanston, IL MD
|
7,122,725
|
DuPage County, Illinois
|
922,921
|
Will County, Illinois
|
690,743
|
McHenry County, Illinois
|
307,774
|
Grundy County, Illinois
|
51,054
|
Lake County, Illinois
|
696,535
|
Lake County-Kenosha County, IL-WI MD
|
866,096 696,535
|
Kenosha County, Wisconsin
|
169,561
|
Kane County, Illinois
|
532,403
|
Elgin, IL MD
|
766,290
|
Kendall County, Illinois
|
128,990
|
DeKalb County, Illinois
|
104,897
|
Lake County, Indiana
|
485,493
|
Gary, IN MD
|
703,428
|
Porter County, Indiana
|
170,389
|
Jasper County, Indiana
|
33,562
|
Newton County, Indiana
|
13,984
|
Ottawa, IL μSA
|
147,036
|
LaSalle County, Illinois
|
108,669
|
none
|
Bureau County, Illinois
|
32,628
|
Putnam County, Illinois
|
5,739
|
Michigan City-La Porte, IN MSA
|
109,888
|
LaPorte County, Indiana
|
109,888
|
Kankakee-Bradley, IL MSA
|
109,862
|
Kankakee County, Illinois
|
109,862
|
St. Louis-St. Charles-Farmington, MO-IL CSA
|
2,907,648 719,920
|
St. Louis, MO-IL MSA
|
2,803,228 682,715
|
St. Louis County, Missouri
|
994,205
|
St. Charles County, Missouri
|
402,022
|
City of St. Louis, Missouri
|
300,576
|
Madison County, Illinois
|
262,966
|
St. Clair County, Illinois
|
259,686
|
Jefferson County, Missouri
|
225,081
|
Franklin County, Missouri
|
103,967
|
Lincoln County, Missouri
|
59,013
|
Macoupin County, Illinois
|
44,926
|
Clinton County, Illinois
|
37,562
|
Warren County, Missouri
|
35,649
|
Monroe County, Illinois
|
34,637
|
Jersey County, Illinois
|
21,773
|
Bond County, Illinois
|
16,426
|
Calhoun County, Illinois
|
4,739
|
Farmington, MO μSA
|
67,215
|
Saint Francois County, Missouri
|
67,215
|
Centralia, IL μSA
|
37,205
|
Marion County, Illinois
|
37,205
|
Rockford-Freeport-Rochelle, IL CSA
|
431,257
|
Rockford, IL MSA
|
336,116
|
Winnebago County, Illinois
|
282,572
|
Boone County, Illinois
|
53,544
|
Rochelle, IL μSA
|
50,643
|
Ogle County, Illinois
|
50,643
|
Freeport, IL μSA
|
44,498
|
Stephenson County, Illinois
|
44,498
|
none
|
Peoria, IL MSA
|
400,561
|
Peoria County, Illinois
|
179,179
|
Tazewell County, Illinois
|
131,803
|
Woodford County, Illinois
|
38,459
|
Fulton County, Illinois
|
34,340
|
Marshall County, Illinois
|
11,438
|
Stark County, Illinois
|
5,342
|
Springfield-Jacksonville-Lincoln, IL CSA
|
306,399
|
Springfield, IL MSA
|
206,868
|
Sangamon County, Illinois
|
194,672
|
Menard County, Illinois
|
12,196
|
Jacksonville, IL μSA
|
38,609
|
Morgan County, Illinois
|
33,658
|
Scott County, Illinois
|
4,951
|
Taylorville, IL μSA
|
32,304
|
Christian County, Illinois
|
32,304
|
Lincoln, IL μSA
|
28,618
|
Logan County, Illinois
|
28,618
|
none
|
Champaign-Urbana, IL MSA
|
226,033
|
Champaign County, Illinois
|
209,689
|
Piatt County, Illinois
|
16,344
|
Bloomington-Pontiac, IL CSA
|
207,165
|
Bloomington, IL MSA
|
171,517
|
McLean County, Illinois
|
171,517
|
Pontiac, IL μSA
|
35,648
|
Livingston County, Illinois
|
35,648
|
Davenport-Moline, IA-IL CSA
|
468,265 206,229
|
Davenport-Moline-Rock Island, IA-IL MSA
|
379,172 206,229
|
Scott County, Iowa
|
172,943
|
Rock Island County, Illinois
|
141,879
|
Henry County, Illinois
|
48,913
|
Mercer County, Illinois
|
15,437
|
Clinton, IA μSA
|
46,429
|
Clinton County, Iowa
|
46,429
|
Muscatine, IA μSA
|
42,664
|
Muscatine County, Iowa
|
42,664
|
none
|
Carbondale-Marion, IL MSA
|
135,764
|
Williamson County, Illinois
|
67,597
|
Jackson County, Illinois
|
56,750
|
Johnson County, Illinois
|
12,417
|
Decatur, IL MSA
|
104,009
|
Macon County, Illinois
|
104,009
|
Dixon-Sterling, IL CSA
|
89,849
|
Sterling, IL μSA
|
55,175
|
Whiteside County, Illinois
|
55,175
|
Dixon, IL μSA
|
34,096
|
Lee County, Illinois
|
34,096
|
none
|
Danville, IL MSA
|
75,758
|
Vermilion County, Illinois
|
75,758
|
Quincy-Hannibal, IL-MO CSA
|
114,050 65,435
|
Quincy, IL-MO μSA
|
75,211 65,435
|
Adams County, Illinois
|
65,435
|
Lewis County, Missouri
|
9,776
|
Hannibal, MO μSA
|
38,839
|
Marion County, Missouri
|
28,530
|
Ralls County, Missouri
|
10,309
|
none
|
Charleston–Mattoon, IL μSA
|
61,387
|
Coles County, Illinois
|
50,621
|
Cumberland County, Illinois
|
10,766
|
Galesburg, IL μSA
|
49,699
|
Knox County, Illinois
|
49,699
|
Mount Vernon, IL μSA
|
37,684
|
Jefferson County, Illinois
|
37,684
|
Effingham, IL μSA
|
34,008
|
Effingham County, Illinois
|
34,008
|
Macomb, IL μSA
|
29,682
|
McDonough County, Illinois
|
29,682
|
Burlington-Fort Madison-Keokuk, IA-IL-MO CSA
|
103,775 24,354
|
Fort Madison-Keokuk, IA-IL-MO μSA
|
58,162 17,708
|
Lee County, Iowa
|
33,657
|
Hancock County, Illinois
|
17,708
|
Clark County, Missouri
|
6,797
|
Burlington, IA-IL μSA
|
45,613 6,646
|
Des Moines County, Iowa
|
38,967
|
Henderson County, Illinois
|
6,646
|
Paducah-Mayfield, KY-IL CSA
|
133,538 13,772
|
Paducah, KY-IL μSA
|
96,272 13,772
|
McCracken County, Kentucky
|
65,418
|
Massac County, Illinois
|
13,772
|
Livingston County, Kentucky
|
9,194
|
Ballard County, Kentucky
|
7,888
|
Mayfield, KY μSA
|
37,266
|
Graves County, Kentucky
|
37,266
|
Cape Girardeau-Sikeston, MO-IL CSA
|
135,045 5,761
|
Cape Girardeau, MO-IL MSA
|
96,765 5,761
|
Cape Girardeau County, Missouri
|
78,871
|
Bollinger County, Missouri
|
12,133
|
Alexander County, Illinois
|
5,761
|
Sikeston, MO μSA
|
38,280
|
Scott County, Missouri
|
38,280
|
none
|
none
|
Franklin County, Illinois
|
38,469
|
Randolph County, Illinois
|
31,782
|
Montgomery County, Illinois
|
28,414
|
Iroquois County, Illinois
|
27,114
|
Saline County, Illinois
|
23,491
|
Shelby County, Illinois
|
21,634
|
Fayette County, Illinois
|
21,336
|
Jo Daviess County, Illinois
|
21,235
|
Perry County, Illinois
|
20,916
|
Douglas County, Illinois
|
19,465
|
Crawford County, Illinois
|
18,667
|
Edgar County, Illinois
|
17,161
|
Warren County, Illinois
|
16,844
|
Union County, Illinois
|
16,653
|
Wayne County, Illinois
|
16,215
|
Lawrence County, Illinois
|
15,678
|
DeWitt County, Illinois
|
15,638
|
Pike County, Illinois
|
15,561
|
Richland County, Illinois
|
15,513
|
Clark County, Illinois
|
15,441
|
Moultrie County, Illinois
|
14,501
|
Carroll County, Illinois
|
14,305
|
Washington County, Illinois
|
13,887
|
White County, Illinois
|
13,537
|
Mason County, Illinois
|
13,359
|
Clay County, Illinois
|
13,184
|
Greene County, Illinois
|
12,969
|
Ford County, Illinois
|
12,961
|
Cass County, Illinois
|
12,147
|
Wabash County, Illinois
|
11,520
|
Jasper County, Illinois
|
9,610
|
Hamilton County, Illinois
|
8,116
|
Schuyler County, Illinois
|
6,768
|
Brown County, Illinois
|
6,578
|
Edwards County, Illinois
|
6,395
|
Pulaski County, Illinois
|
5,335
|
Gallatin County, Illinois
|
4,828
|
Pope County, Illinois
|
4,177
|
Hardin County, Illinois
|
3,821
|
State of Illinois
|
12,671,847
|