Chicago, IL

1959‑1983:		Chicago, IL SMSA in Chicago-Northestern Indiana, IL-IN SCSA
1983‑1992:		Chicago, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
1992‑2003:		Chicago, IL PMSA in Chicago-Gary-Kenosha, IL-IN-WI CMSA
2003‑2006:		Chicago-Naperville-Joliet, IL Metro Division in Chicago-Naperville-Joliet, IL Metro Area in Chicago-Naperville-Michigan City, IL-IN-WI CSA

Components

Population


Component	1950	1960	1970	1980	1990	2000	2005


Cook County, IL	4,508,792	5,129,725	5,492,369	5,253,655	5,105,067	5,376,741	5,303,943

DeKalb County, IL	40,781	51,714	71,654	74,624	77,932	88,969	97,770

DuPage County, IL	154,599	313,459	491,882	658,835	781,666	904,161	931,219

Grundy County, IL	19,217	22,350	26,535	30,582	32,337	37,535	43,736

Kane County, IL	150,388	208,246	251,005	278,405	317,471	404,119	483,208

Kendall County, IL	12,115	17,540	26,374	37,202	39,413	54,544	79,597

Lake County, IL	179,097	293,656	382,638	440,372	516,418	644,356	704,086

McHenry County, IL	50,656	84,210	111,555	147,897	183,241	260,077	304,701

Will County, IL	134,336	191,617	249,498	324,460	357,313	502,266	642,625



Total	-	6,220,913	6,978,947	7,103,624	6,069,974	8,272,768	7,886,799
Percent Change	-	-	12.2%	1.8%	-14.6%	36.3%	-4.7%



Total (as currently defined)	5,070,884	6,018,861	6,720,872	6,805,660	6,894,440	7,628,412	7,886,799
Percent Change	-	18.7%	11.7%	1.3%	1.3%	10.6%	3.4%

Timeline

1950

1960

1970

1980

1990

2000

Component

Cook County, IL

DeKalb County, IL

DuPage County, IL

Grundy County, IL

Kane County, IL

Kendall County, IL

Lake County, IL

McHenry County, IL

Will County, IL

In this area

In another area

Principal/Central Cities

Population


City	1950	1960		1970		1980		1990		2000		2005


Chicago, IL	3,620,962	3,550,404	*	3,366,957	*	3,005,072	*	2,783,726	*	2,896,016	*	2,842,518	*

Chicago Heights, IL	24,551	34,331		40,900		37,026		33,072	*	32,776		31,373

Evanston, IL	73,641	79,283		79,808		73,706		73,233	*	74,239	*	75,236	*

DeKalb, IL	11,708	18,486		32,949		33,099		34,925		39,018	*	42,085

Joliet, IL	51,601	66,780		80,378		77,956		76,836		106,221	*	136,208	*

North Chicago, IL	8,628	22,938		47,275		38,774		34,978		35,918	*	33,376

Aurora, IL	50,576	63,715		74,182		81,293		14,811 99,581		142,990	*	168,181

Elgin, IL	44,223	49,447		55,691		63,798		15,400 77,010		94,487	*	98,645	*

Arlington Heights, IL	8,768	27,878		65,058		66,116		75,460		76,031		74,619 74,620	*

Des Plaines, IL	14,994	34,886		57,239		53,568		53,223		58,720		56,551	*

Naperville, IL	7,013	12,933		23,885		42,330		72,931 85,351		128,358		141,579	*

Schaumburg, IL	(x)	986		18,730		53,305		68,586		75,386		72,805	*

Skokie, IL	14,832	59,364		68,322		60,278		59,432		63,348		64,678	*



Total	0	3,550,404		3,366,957		3,005,072		2,890,031		3,388,889		3,562,839
Metro	0	6,220,913		6,978,947		7,103,624		6,069,974		8,272,768		7,886,799
Percent		57.1%		48.2%		42.3%		47.6%		41.0%		45.2%

Timeline

Principal or central city of this metro area

1950

1960

1970

1980

1990

2000

City

Chicago, IL

Chicago Heights, IL

Evanston, IL

DeKalb, IL

Joliet, IL

North Chicago, IL

Aurora, IL

Elgin, IL

Arlington Heights, IL

Des Plaines, IL

Naperville, IL

Schaumburg, IL

Skokie, IL

Urban/Rural Population



1960				Population in Metro Area	Percent of Total Metro Area Population

	Urban Population			5,916,969	95.1%
		UA Population		5,682,374	91.3%
	Rural Population			303,944	4.9%

	Inside Central Cities			3,550,404	57.1%
	Outside Central Cities			2,670,509	42.9%

	Total Metro Area Population			6,220,913	100.0%


	Urbanized Area		Total UA Population	UA Population in Metro Area	Percent of UA in Metro Area

	Aurora, IL		85,522	85,522	100.0%
	Chicago, IL-Northwestern IN		5,959,213	5,480,267	92.0%
	Joliet, IL		116,585	116,585	100.0%

	Total			5,682,374


	population figures are from the 1960 census, metro areas as defined Oct 1963




1970				Population in Metro Area	Percent of Total Metro Area Population

	Urban Population			6,710,912	96.2%
		UA Population		6,565,574	94.1%
	Rural Population			268,035	3.8%

	Inside Central Cities			3,366,957	48.2%
	Outside Central Cities			3,611,990	51.8%

	Total Metro Area Population			6,978,947	100.0%


	Urbanized Area		Total UA Population	UA Population in Metro Area	Percent of UA in Metro Area

	Aurora-Elgin, IL		232,917	224,918	96.6%
	Chicago, IL-Northwestern IN		6,714,578	6,185,156	92.1%
	Joliet, IL		155,500	155,500	100.0%

	Total			6,565,574


	population figures are from the 1970 census, metro areas as defined Apr 1973




1980				Population in Metro Area	Percent of Total Metro Area Population

	Urban Population			5,973,876	98.6%
		UA Population		5,888,225	97.2%
	Rural Population			86,511	1.4%

	Inside Central Cities			3,128,507	51.6%
	Outside Central Cities			2,931,880	48.4%

	Total Metro Area Population			6,060,387	100.0%


	Urbanized Area		Total UA Population	UA Population in Metro Area	Percent of UA in Metro Area

	Aurora, IL		158,911	1,877	1.2%
	Chicago, IL-Northwestern IN		6,779,799	5,866,523	86.5%
	Elgin, IL		106,593	11,111	10.4%
	Round Lake Beach, IL		65,676	8,714	13.3%

	Total			5,888,225


	population figures are from the 1980 census, metro areas as defined Jun 1983




1990				Population in Metro Area	Percent of Total Metro Area Population

	Urban Population			7,152,182	96.5%
		UA Population		6,972,909	94.1%
	Rural Population			258,676	3.5%

	Inside Central Cities			3,180,289	42.9%
	Outside Central Cities			4,230,569	57.1%

	Total Metro Area Population			7,410,858	100.0%


	Urbanized Area		Total UA Population	UA Population in Metro Area	Percent of UA in Metro Area

	Aurora, IL		192,043	192,043	100.0%
	Chicago, IL-Northwestern IN		6,792,087	6,301,112	92.8%
	Crystal Lake, IL		72,498	72,498	100.0%
	Elgin, IL		123,899	123,899	100.0%
	Joliet, IL		170,717	170,717	100.0%
	Round Lake Beach-McHenry, IL-WI		112,693	112,640	100.0%

	Total			6,972,909


	population figures are from the 1990 census, metro areas as defined Jun 1993




2000				Population in Metro Area	Percent of Total Metro Area Population

	Urban Population			7,484,318	98.1%
		UA Population		7,384,543	96.8%
	Rural Population			144,094	1.9%

	Inside Principal Cities			3,572,806	46.8%
	Outside Principal Cities			4,055,606	53.2%

	Total Metro Area Population			7,628,412	100.0%


	Urbanized Area		Total UA Population	UA Population in Metro Area	Percent of UA in Metro Area

	Chicago, IL-IN		8,307,904	7,276,790	87.6%
	DeKalb, IL		55,805	55,805	100.0%
	Round Lake Beach-McHenry-Grayslake, IL-WI		226,848	51,948	22.9%

	Total			7,384,543


	population figures are from the 2000 census, metro areas as defined Jun 2003

Component Change History




Apr 1950



-		Cook County, IL included as original component of Chicago, IL-IN SMA
-		DuPage County, IL included as original component of Chicago, IL-IN SMA
-		Kane County, IL included as original component of Chicago, IL-IN SMA
-		Lake County, IL included as original component of Chicago, IL-IN SMA
-		Will County, IL included as original component of Chicago, IL-IN SMA
-		Chicago, IL designated as original central city of new Chicago, IL-IN SMA


Jun 1959



-		New SMSA: Chicago, IL SMSA in Chicago-Northestern Indiana, IL-IN SCSA
-		Cook County, IL included as original SMSA component, transferred from Chicago, IL-IN SMA
-		DuPage County, IL included as original SMSA component, transferred from Chicago, IL-IN SMA
-		Kane County, IL included as original SMSA component, transferred from Chicago, IL-IN SMA
-		Lake County, IL included as original SMSA component, transferred from Chicago, IL-IN SMA
-		McHenry County, IL included as original SMSA component
-		Will County, IL included as original SMSA component, transferred from Chicago, IL-IN SMA
-		Chicago, IL designated as original central city of new SMSA, transferred from Chicago, IL-IN SMA


Jun 1983



-		Aurora, IL designated as original central city of new Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Elgin, IL designated as original central city of new Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Chicago, IL SMSA in Chicago-Northestern Indiana, IL-IN SCSA became Chicago, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Grundy County, IL included as original component of Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Kane County, IL included as original component of Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Kendall County, IL included as original component of Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Lake County, IL included as original component of Lake County, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Will County, IL included as original component of Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Chicago Heights, IL designated as central city of PMSA
-		Evanston, IL designated as central city of PMSA
-		Joliet, IL designated as original central city of new Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		North Chicago, IL designated as original central city of new Lake County, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA


Dec 1992



-		DeKalb County, IL added
-		Grundy County, IL added, transferred from Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Kane County, IL added, transferred from Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Kendall County, IL added, transferred from Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Lake County, IL added, transferred from Lake County, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Will County, IL added, transferred from Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		DeKalb, IL designated as central city of PMSA
-		Joliet, IL designated as central city of PMSA, transferred from Joliet, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		North Chicago, IL designated as central city of PMSA, transferred from Lake County, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Aurora, IL no longer designated as central city of Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA
-		Chicago Heights, IL no longer designated as central city
-		Elgin, IL no longer designated as central city of Aurora-Elgin, IL PMSA in Chicago-Gary-Lake County, IL-IN-WI CMSA


Jun 1993



-		Aurora, IL designated as central city of PMSA
-		Elgin, IL designated as central city of PMSA


Jun 2003



-		Title of Chicago, IL PMSA in Chicago-Gary-Kenosha, IL-IN-WI CMSA changed to Chicago-Naperville-Joliet, IL Metro Division in Chicago-Naperville-Joliet, IL Metro Area in Chicago-Naperville-Michigan City, IL-IN-WI CSA
-		Lake County, IL included as original component of reestablished Lake County-Kenosha County, IL-WI Metro Division in Chicago-Naperville-Joliet, IL Metro Area in Chicago-Naperville-Michigan City, IL-IN-WI CSA
-		Arlington Heights, IL designated as principal city of Metro Division
-		Des Plaines, IL designated as principal city of Metro Division
-		Naperville, IL designated as principal city of Metro Division
-		Schaumburg, IL designated as principal city of Metro Division
-		Skokie, IL designated as principal city of Metro Division
-		Aurora, IL no longer designated as principal/central city
-		DeKalb, IL no longer designated as principal/central city
-		North Chicago, IL no longer designated as principal/central city

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