Illinois statistical areas

The U.S. State of Illinois currently has 47 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated 14 combined statistical areas, 12 metropolitan statistical areas, and 21 micropolitan statistical areas in Illinois.^[1] As of 2023, the largest of these is the Chicago-Naperville, IL-IN-WI CSA, comprising the area around Illinois' largest city, Chicago.

The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.^[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (commonly referred to as a CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population,^[2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core".^[2] The OMB further divides core-based statistical areas based on population into metropolitan statistical areas (MSAs) for those with at least 50,000 and micropolitan statistical areas (μSAs) for those with 10,000 to 49,999 people.^[2]

The OMB defines a combined statistical area (CSA) as two or more adjacent core-based statistical areas where the employment interchange rate (% commuting from A to B plus % commuting from B to A) is at least 15%.^[2] The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.

More information Combined statistical area, 2023 population (est.) ...

The 47 United States statistical areas and 102 counties of the State of Illinois^{[lower-alpha 1]}
Combined statistical area^[1]	2023 population (est.)^[3]	Core-based statistical area^[1]	2023 population (est.)^[3]	County	2023 population (est.)^[3]	Metropolitan division^[1]	2023 population (est.)^[3]
Chicago-Naperville, IL-IN-WI CSA	9,794,558 8,791,936 (IL)	Chicago-Naperville-Elgin, IL-IN MSA	9,262,825 8,539,397 (IL)	Cook County, Illinois	5,087,072	Chicago-Naperville-Schaumburg, IL MD	7,075,391
				DuPage County, Illinois	921,213
				Will County, Illinois	700,728
				McHenry County, Illinois	312,800
				Grundy County, Illinois	53,578
				Kane County, Illinois	514,982	Elgin, IL MD	755,246
				Kendall County, Illinois	139,976
				DeKalb County, Illinois	100,288
				Lake County, Indiana	500,598	Lake County-Porter County-Jasper County, IN MD	723,428
				Porter County, Indiana	175,335
				Jasper County, Indiana	33,535
				Newton County, Indiana	13,960
				Lake County, Illinois	708,760	Lake County, IL MD	708,760
		Kenosha, WI MSA	167,488	Kenosha County, Wisconsin	167,488	none
		Ottawa, IL μSA	146,599	LaSalle County, Illinois	108,309
				Bureau County, Illinois	32,729
				Putnam County, Illinois	5,561
		Michigan City-La Porte, IN MSA	111,706	LaPorte County, Indiana	111,706
		Kankakee-Bradley, IL MSA	105,940	Kankakee County, Illinois	105,940
St. Louis-St. Charles-Farmington, MO-IL CSA	2,900,730^{[lower-alpha 2]}^[1] 708,061 (IL)	St. Louis, MO-IL MSA	2,796,999 671,388 (IL)	St. Louis County, Missouri	987,059
				St. Charles County, Missouri	416,659
				City of St. Louis, Missouri	281,754
				Madison County, Illinois	262,752
				St. Clair County, Illinois	251,018
				Jefferson County, Missouri	231,230
				Franklin County, Missouri	106,404
				Lincoln County, Missouri	64,699
				Macoupin County, Illinois	44,018
				Warren County, Missouri	37,806
				Clinton County, Illinois	36,785
				Monroe County, Illinois	34,957
				Jersey County, Illinois	21,091
				Bond County, Illinois	16,450
				Calhoun County, Illinois	4,317
		Farmington, MO μSA	67,058	Saint Francois County, Missouri	67,058
		Centralia, IL μSA	36,673	Marion County, Illinois	36,673
Rockford-Freeport-Rochelle, IL CSA	428,494	Rockford, IL MSA	334,124	Winnebago County, Illinois	280,922
		Rockford, IL MSA	334,124	Boone County, Illinois	53,202
		Rochelle, IL μSA	51,265	Ogle County, Illinois	51,265
		Freeport, IL μSA	43,105	Stephenson County, Illinois	43,105
Peoria-Canton, IL CSA	394,781	Peoria, IL MSA	362,240	Peoria County, Illinois	177,513
				Tazewell County, Illinois	129,541
				Woodford County, Illinois	38,285
				Marshall County, Illinois	11,683
				Stark County, Illinois	5,218
		Canton, IL μSA	32,541	Fulton County, Illinois	32,541
Champaign-Urbana-Danville, IL CSA	307,260	Champaign-Urbana, IL MSA	235,608	Champaign County, Illinois	205,644
				Piatt County, Illinois	16,714
				Ford County, Illinois	13,250
		Danville, IL MSA	71,652	Vermilion County, Illinois	71,652
Springfield-Jacksonville-Lincoln, IL CSA	303,113	Springfield, IL MSA	205,445	Sangamon County, Illinois	193,491
		Springfield, IL MSA	205,445	Menard County, Illinois	11,954
		Jacksonville, IL μSA	36,850	Morgan County, Illinois	32,140
		Jacksonville, IL μSA	36,850	Scott County, Illinois	4,710
		Taylorville, IL μSA	33,228	Christian County, Illinois	33,228
		Lincoln, IL μSA	27,590	Logan County, Illinois	27,590
Bloomington-Pontiac, IL CSA	205,761	Bloomington, IL MSA	170,441	McLean County, Illinois	170,441
Bloomington-Pontiac, IL CSA	205,761	Pontiac, IL μSA	35,320	Livingston County, Illinois	35,320
Davenport-Moline, IA-IL CSA	467,817 205,171 (IL)	Davenport-Moline-Rock Island, IA-IL MSA	379,441 205,171 (IL)	Scott County, Iowa	174,270
				Rock Island County, Illinois	141,236
				Henry County, Illinois	48,448
				Mercer County, Illinois	15,487
		Clinton, IA μSA	46,158	Clinton County, Iowa	46,158
		Muscatine, IA μSA	42,218	Muscatine County, Iowa	42,218
Carbondale-Marion-Herrin, IL CSA	118,847	Marion-Herrin, IL μSA	66,706	Williamson County, Illinois	66,706
Carbondale-Marion-Herrin, IL CSA	118,847	Carbondale, IL μSA	52,141	Jackson County, Illinois	52,141
none		Decatur, IL MSA	100,591	Macon County, Illinois	100,591
Dixon-Sterling, IL CSA	88,152	Sterling, IL μSA	54,498	Whiteside County, Illinois	54,498
Dixon-Sterling, IL CSA	88,152	Dixon, IL μSA	33,654	Lee County, Illinois	33,654
Quincy-Hannibal, IL-MO CSA	113,084 64,441 (IL)	Quincy, IL-MO μSA	74,259 64,441 (IL)	Adams County, Illinois	64,441
		Quincy, IL-MO μSA	74,259 64,441 (IL)	Lewis County, Missouri	9,818
		Hannibal, MO μSA	38,825	Marion County, Missouri	28,336
		Hannibal, MO μSA	38,825	Ralls County, Missouri	10,489
none		Galesburg, IL μSA	48,411	Knox County, Illinois	48,411
		Charleston–Mattoon, IL μSA	46,060	Coles County, Illinois	46,060
		Effingham, IL μSA	44,592	Effingham County, Illinois	34,331
		Effingham, IL μSA	44,592	Cumberland County, Illinois	10,261
		Mount Vernon, IL μSA	36,320	Jefferson County, Illinois	36,320
		Macomb, IL μSA	26,839	McDonough County, Illinois	26,839
Paducah-Mayfield, KY-IL CSA	138,728 13,661 (IL)	Paducah, KY-IL MSA	102,267 13,661 (IL)	McCracken County, Kentucky	67,428
				Massac County, Illinois	13,661
				Livingston County, Kentucky	8,892
				Ballard County, Kentucky	7,582
				Carlisle County, Kentucky	4,704
		Mayfield, KY μSA	36,461	Graves County, Kentucky	36,461
Burlington-Fort Madison, IA-IL CSA	76,906 6,088 (IL)	Burlington, IA-IL μSA	44,341 6,088 (IL)	Des Moines County, Iowa	38,253
		Burlington, IA-IL μSA	44,341 6,088 (IL)	Henderson County, Illinois	6,088
		Fort Madison, IA μSA	32,565	Lee County, Iowa	32,565
Cape Girardeau-Sikeston, MO-IL CSA	147,934 4,695 (IL)	Cape Girardeau, MO-IL MSA	98,223 4,695 (IL)	Cape Girardeau County, Missouri	82,984
				Bollinger County, Missouri	10,544
				Alexander County, Illinois	4,695
		Sikeston, MO μSA	49,711	Scott County, Missouri	37,889
		Sikeston, MO μSA	49,711	Mississippi County, Missouri	11,822
none				Franklin County, Illinois	37,138
				Randolph County, Illinois	29,815
				Montgomery County, Illinois	27,663
				Iroquois County, Illinois	26,136
				Saline County, Illinois	22,873
				Jo Daviess County, Illinois	21,756
				Fayette County, Illinois	21,164
				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
				Union County, Illinois	16,667
				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
				DeWitt County, Illinois	15,365
				Clark County, Illinois	15,088
				Lawrence County, Illinois	14,813
				Moultrie County, Illinois	14,342
				Pike County, Illinois	14,342
				Washington County, Illinois	13,536
				White County, Illinois	13,401
				Johnson County, Illinois	13,326
				Clay County, Illinois	12,999
				Cass County, Illinois	12,596
				Mason County, Illinois	12,523
				Greene County, Illinois	11,543
				Wabash County, Illinois	10,942
				Jasper County, Illinois	9,144
				Hamilton County, Illinois	7,911
				Schuyler County, Illinois	6,733
				Brown County, Illinois	6,294
				Edwards County, Illinois	5,968
				Pulaski County, Illinois	4,911
				Gallatin County, Illinois	4,670
				Pope County, Illinois	3,707
				Hardin County, Illinois	3,569
State of Illinois					12,549,689

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Primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area. Of the 47 statistical areas of Illinois, 20 are PSAs comprising 14 combined statistical areas, one metropolitan statistical area and five micropolitan statistical areas.

More information 2020 rank, Primary statistical area ...

The 20 primary statistical areas of the State of Illinois^{[lower-alpha 3]}
2020 rank	Primary statistical area^[1]	Population
2020 rank	Primary statistical area^[1]	2023 estimate^[3]	Change	2020 Census^[4]	Change	2010 Census^[5]
1	Chicago-Naperville, IL-IN-WI CSA (IL)	8,791,936	−2.17%	8,986,729	+1.49%	8,854,966
2	St. Louis-St. Charles-Farmington, MO-IL CSA (IL)	708,061	−1.73%	720,490	−3.04%	743,101
3	Rockford-Freeport-Rochelle, IL CSA	428,494	−1.54%	435,216	−3.42%	450,639
4	Peoria-Canton, IL CSA	394,781	−1.89%	402,391	−3.33%	416,255
5	Champaign-Urbana-Danville, IL CSA	307,260	−0.97%	310,260	−1.04%	313,516
6	Springfield-Jacksonville-Lincoln, IL CSA	303,113	−1.75%	308,523	−2.42%	316,177
7	Davenport-Moline, IA-IL CSA (IL)	205,171	−2.14%	209,655	−1.77%	213,442
8	Bloomington-Pontiac, IL CSA	205,761	−0.49%	206,769	−0.84%	208,522
9	Carbondale-Marion-Herrin, IL CSA	118,847	−1.07%	120,127	−5.09%	126,575
10	Decatur, IL MSA	100,591	−3.28%	103,998	−6.11%	110,768
11	Dixon-Sterling, IL CSA	88,152	−1.87%	89,836	−4.96%	94,529
12	Quincy-Hannibal, IL-MO CSA (IL)	64,441	−1.97%	65,737	−2.04%	67,103
13	Galesburg, IL μSA	48,411	−3.11%	49,967	−5.58%	52,919
14	Charleston-Mattoon, IL μSA	46,060	−1.71%	46,863	−13.01%	53,873
15	Effingham, IL μSA	44,592	−1.17%	45,118	−0.38%	45,290
16	Mount Vernon, IL μSA	36,320	−2.14%	37,113	−4.41%	38,827
17	Macomb, IL μSA	26,839	−1.46%	27,238	−16.48%	32,612
18	Paducah-Mayfield, KY-IL CSA (IL)	13,661	−3.59%	14,169	−8.17%	15,429
19	Burlington-Fort Madison, IA-IL CSA (IL)	6,088	−4.68%	6,387	−12.88%	7,331
20	Cape Girardeau-Sikeston, MO-IL CSA (IL)	4,695	−10.40%	5,240	−36.39%	8,238
	Chicago-Naperville, IL-IN-WI CSA	9,794,558	−1.93%	9,986,960	+1.48%	9,840,929
	St. Louis-St. Charles-Farmington, MO-IL CSA	2,900,730	−0.83%	2,924,904	+1.12%	2,892,497
	Davenport-Moline, IA-IL CSA	467,817	−1.31%	474,019	+0.74%	470,527
	Quincy-Hannibal, IL-MO CSA	113,084	−1.37%	114,649	−1.39%	116,262
	Paducah-Mayfield, KY-IL CSA	138,728	−1.00%	140,135	−0.60%	140,987
	Burlington-Fort Madison, IA-IL CSA	76,906	−2.47%	78,852	−5.59%	83,518
	Cape Girardeau-Sikeston, MO-IL CSA	147,934	−0.15%	148,153	−1.12%	149,824

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Geography of Illinois
- Demographics of Illinois

An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in purple. A purple population number over a black population number show the total population versus the in-state population. The state's abbreviation is also shown next to the in-state total.
Per the most recent OMB bulletin, the portion of Sullivan, Missouri within Crawford County, Missouri is included in St. Louis' statistical areas. Population data for this portion of Sullivan is not readily available and is not included in this table.
For PSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that PSA as well as the PSA's total population. Only the intrastate population is ranked.

[1]
Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved October 23, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
[2]
"2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.
[3]
"County Population Totals and Components of Change: 2020-2023". United States Census Bureau, Population Division. March 2023. Retrieved May 21, 2024.
[4]
"PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved May 21, 2024.
[5]
"Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved May 21, 2024.

40.0417°N 89.1965°W / 40.0417; -89.1965 (State of Illinois)

[3] An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in purple. A purple population number over a black population number show the total population versus the in-state population. The state's abbreviation is also shown next to the in-state total.

[Sullivan-5] Per the most recent OMB bulletin, the portion of Sullivan, Missouri within Crawford County, Missouri is included in St. Louis' statistical areas. Population data for this portion of Sullivan is not readily available and is not included in this table.

[6] For PSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that PSA as well as the PSA's total population. Only the intrastate population is ranked.

[OMB_20230721-1] [1]
Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved October 23, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)

[CBSA-2] [2]
"2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.

[PopCBSA-4] [3]
"County Population Totals and Components of Change: 2020-2023". United States Census Bureau, Population Division. March 2023. Retrieved May 21, 2024.

[USC2020-7] [4]
"PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved May 21, 2024.

[USC2010-8] [5]
"Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved May 21, 2024.

[1]

[2]

[lower-alpha 1]

[3]

[lower-alpha 2]

[lower-alpha 3]

[4]

[5]

Illinois statistical areas

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Illinois statistical areas

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Background

Table

Primary statistical areas

See also

Notes

References

External links