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Chicago Suburbs
Images : Chicago Suburbs
General Description
The Chicago metropolitan area, or Chicagoland, is the metropolitan area associated with the city of Chicago, Illinois 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 jurisdiction of the Chicago Metropolitan Agency for Planning a metropolitan planning organization , and the area defined by the Office of Management and Budget OMB as the Chicago-Joliet-Naperville, IL-IN-WI Metropolitan Statistical Area MSA . The Indiana portion of the area is known as Northwest Indiana.
CMAP is responsible for transportation infrastructure, land use, and long term economic development planning for the areas under its jurisdiction. 4 The area has a MSA population of over 10 million.
The Chicago Metropolitan Statistical Area MSA was originally designated by the United States Census Bureau in 1950. It 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, now defined as the Chicago-Naperville-Joliet, IL-IN-WI MSA, is the third largest MSA by population in the United States with a population of 9,569,624 2008 estimate .
The Chicago MSA is further subdivided into the Chicago-Naperville-Joliet, IL Metropolitan Division, corresponding roughly to the CMAP region the Gary, IN Metropolitan Division consisting of the Indiana counties of Lake and Porter, as well as two surrounding counties and the Lake County-Kenosha County, IL-WI Metropolitan Division.
The OMB also defines a slightly larger region as a Combined Statistical Area CSA . The Chicago-Naperville-Michigan City, IL-IN-WI CSA combines 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 CSA, of which the Chicago metropolitan area is part, has a population of 9,793,036 2008 estimate .

