Chicago metropolitan area

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Chicago–Naperville–Joliet
Map of the Chicagoland

Common name: Chicagoland
Largest city
Other cities		 Chicago
 - Aurora
 - Joliet
 - Naperville
 - Gary
 - Elgin
 - Kenosha
Population  Ranked 3rd in the U.S.
 - Total 9,505,748 (2005 est.)
 - Density 1,318 /sq. mi. 
509 /km²
Area 7,212 sq. mi.
18,679 km²
State(s)   - Illinois
 - Indiana
 - Wisconsin
Elevation   
 - Highest point N/A feet (N/A m)
 - Lowest point 577 feet (176 m)

The Chicago metropolitan area is the metropolitan area associated with the city of Chicago in the United States and its suburbs. It is the area that is closely linked to the city through social, economic, and cultural ties. There are several definitions of the area, the two most common being the area under the jursidiction of the Chicago Metropolitan Agency for Planning (a metropolitan planning organization), and the area defined by the federal Office of Management and Budget (OMB) as the Chicago-Naperville-Joliet, IL-IN-WI Metropolitan Statistical Area (MSA).

The metropolitan area is also informally known by residents as Chicagoland, a term which may include areas outside the MSA as part of the broader Combined Statistical Area (CSA). The Indiana portion of the area is known as Northwest Indiana.

The Chicago metropolitan area is sometimes grouped together with Milwaukee and Racine in Wisconsin, creating a megalopolis, gradually spreading toward nearby urban centers like Rockford, South Bend, and Madison.

Contents

[edit] Definitions

[edit] Chicago Metropolitan Agency for Planning

The Chicago Metropolitan Agency for Planning (CMAP) is responsible for transportation infrastructure, land use, and long term economic development planning for the areas under its jurisdiction.[1] The area has a population of 8.15 million (as of the 2000 Census).[2] It consists of seven counties in the state of Illinois:

[edit] Metropolitan statistical area

The Chicago Metropolitan Statistical Area (MSA) was originally designated by the United States Census Bureau in 1950 and consisted of the Illinois counties of Cook, DuPage, Kane, Lake, and Will along with Lake County in Indiana. As surrounding counties saw an increase in their population densities and the number of their residents employed within Cook County, they met Census criteria to be added to the MSA. The Chicago MSA is the third largest MSA by population in the United States with a population of 9,505,748 (2006 estimate).[3]

The MSA is further subdivided into the Chicago-Naperville-Joliet, IL Metropolitan Division, corresponding roughly to the CMAP region, the Gary, IN Metropolitan Division surrounding the city of Gary, Indiana, and the Lake County-Kenosha County, IL-WI Metropolitan Division. The components of the MSA and their 2006 populations[3] are:

[edit] Combined statistical area

The OMB also defines a slightly larger region, the Combined Statistical Area (CSA), combining the metropolitan areas of Chicago, Michigan City (in Indiana), and Kankakee (in Illinois). This area represents the extent of the labor market pool for the entire region. The combined statistical area, of which the Chicago metropolitan area is part, has a population of 9,725,317 (as of 2006).[3]

[edit] Chicagoland

"Chicagoland" is an informal name for the Chicago metropolitan area, used primarily by copywriters, advertising agencies, and traffic reporters.[citation needed] There is no precise definition for the term "Chicagoland," which may be larger than the MSA and include portions of the greater CSA. The Chicago Tribune, which coined the term, includes the city of Chicago, the rest of Cook County, eight nearby Illinois counties; Lake, McHenry, DuPage, Kane, Kendall, Grundy, Will and Kankakee, and two counties in Indiana; Lake and Porter.[4] The Illinois Department of Tourism defines Chicagoland as Cook County without the city of Chicago, and only Lake, DuPage, Kane and Will counties.[5] The Chicagoland Chamber of Commerce defines it as all of Cook, and DuPage, Kane, Lake, McHenry and Will counties. [6]

Colonel Robert R. McCormick, editor and publisher of the Chicago Tribune, usually gets credit for placing the term in common use.[7][8] McCormick's conception of Chicagoland stretched all the way to nearby parts of Iowa and Michigan.[9] The first usage came on July 27, 1926 (page 1) with the headline: "Chicagoland's Shrines: A Tour of Discoveries" by reporter James O'Donnell Bennett. He claimed that Chicagoland comprised everything in a 200 mile radius in every direction and reported on many different places in the area. The Tribune was the dominant newspaper in a vast area stretching to the west of the city, and that hinterland was closely tied to the metropolis by rail lines and commercial links.[10]

[edit] Demographics

The suburbs, surrounded by easily annexed flat ground, have been expanding at a tremendous rate since the early 1960s. Naperville is noteworthy for being one of only a few boomburbs outside the Sunbelt, West Coast and Mountain States regions, and exurban Kendall County ranked as the fastest-growing county in the United States with a population greater than 10,000 between 2000 and 2007.[11]

Settlement patterns in the Chicago metropolitan area tend to follow those in the city proper: the northern suburbs along the shore of Lake Michigan are comparatively affluent, while the southern suburbs (sometimes known as Chicago Southland) are less so, with lower median incomes and a lower cost of living. However, there is a major exception to this. While Chicago's west side is the poorest section of the city, the western and northwestern suburbs contain many affluent areas. According to the 2000 Census, DuPage County had the highest median household income of any county in the Midwest.

According to the 2000 US Census, poverty rates of the largest counties from least poverty to most are as follows: McHenry 3.70%, Dupage 5.90%, Will 6.70%, Lake 6.90%, Kane 7.40%, Cook 14.50%.

In an in-depth historical analysis, Keating (2004, 2005) examined the origins of 233 settlements that by 1900 had become suburbs or city neighborhoods of the Chicago metropolitan area . The settlements began as farm centers (41%), industrial towns (30%), residential railroad suburbs (15%), and recreational/institutional centers (13%). Although relations between the different settlement types were at times contentious, there also was cooperation in such undertakings as the construction of high schools.

[edit] Population

Census Area July 1, 2006 Census 2000 1990 Census 1980 Census 1970 Census 1960 Census 1950 Census
Chicago- Naperville- Joliet, IL-IN-WI 9,505,748 9,098,316 8,065,633 7,869,542 7,612,314 6,794,461 5,495,364
Cook County, Illinois 5,288,655 5,376,741 5,105,067 5,253,655 5,492,369 5,129,725 4,508,792
DeKalb County, Illinois 100,139 88,969 77,932¹ 74,624¹ 71,654¹ 51,714¹ 40,781¹
DuPage County, Illinois 932,670 904,161 781,666 658,835 491,882 313,459 154,599
Grundy County, Illinois 45,828 37,535 32,337 30,582¹ 26,535¹ 22,350¹ 19,217¹
Kane County, Illinois 493,735 404,119 317,471 278,405 251,005 208,246 150,388
Kendall County, Illinois 88,158 54,544 39,413 37,202¹ 26,374¹ 17,540¹ 12,115¹
Lake County, Illinois 713,076 644,356 516,418 440,372 382,638 293,656 179,097
McHenry County, Illinois 312,373 260,077 183,241 147,897 111,555 84,210 50,656¹
Will County, Illinois 668,217 502,266 357,313 324,460 249,498 191,617 134,336
Jasper County, Indiana 32,296 30,043 24,960¹ 26,138¹ 20,429¹ 18,842¹ 17,031¹
Lake County, Indiana 494,202 484,564 475,594 522,965 546,253 513,269 368,152
Newton County, Indiana 14,293 14,566 13,551¹ 14,844¹ 11,606¹ 11,502¹ 11,006¹
Porter County, Indiana 160,105 146,798 128,932 119,816 87,114 60,279 40,076¹
Kenosha County, Wisconsin 162,001 149,577 128,181 123,137 117,917¹ 100,615¹ 75,238¹

¹County was not a part of this statistical area at the time of this Census and the county's population is not included in the total.

[edit] Average Hom