Chicago and Beyond
The Chicago metropolitan area, known commonly as Chicagoland, is made up of the centrally located Cook County—home to the most populous city in the area: Chicago—and the five “collar counties” (DuPage, Kane, Lake, McHenry and Will) that surround it. The Chicagoland area’s population grew from 9,461,105 in 2010 to 9,537,289 in 2013—a modest increase 0.87 percent.

In total, Chicagoland covers 10,856 square miles, a territory larger than the states of Rhode Island and Delaware combined. Chicago’s average altitude is 586 feet above sea level.

The Chicago-Naperville-Elgin metropolitan statistical area (MSA) is ranked third in the United States and fifth in the world for the largest metro economy—with a gross domestic product of $571 billion in 2013. According to the U.S. Department of Commerce, only the New York-Newark-Jersey City MSA and the Los Angeles-Long Beach-Anaheim MSA top Chicago’s economy.

Industries, such as the services sector, continue to lead the area’s economic output with large profits in the areas of professional and business services as well as education and health services. Other industry supersectors driving the economy are manufacturing along with trade, transportation and utilities.

COOK COUNTY—OVERVIEW
Cook County is the largest county in Illinois and the second largest in America with an estimated 2013 population of 5,240,700. A sizeable portion of the county houses the city of Chicago, the county seat and 132 surrounding city suburbs. It covers 945.33 square miles of land; 227.63 square miles exist in the Chicago city limits. The county is positioned in the northeast corner of the state with its eastern side bordering Lake Michigan’s shoreline. Altitudes range from 579 feet above sea level to a maximum height of 673 feet above sea level throughout the city of Chicago. Temperatures range from an average high of 84°F in July to an average low of 18°F in January. Precipitation in the area averages 37.5 inches annually. Within the last 30 years, Cook County has developed most of the remaining rural areas and is now primarily urban.

Major Communities (2013 Population): Arlington Heights (75,994), Bartlett (41,679), Berwyn (56,758), Buffalo Grove (41,778), Calumet City (37,240), Chicago (2,718,782), Chicago Heights (30,423), Cicero (84,103), Des Plaines (58,918), Elgin (110,145), Elk Grove Village (33,419), Evanston (75,570), Glenview (45,417), Hoffman Estates (52,398), Mount Prospect (54,771), Northbrook (33,600), Oak Lawn (57,073), Oak Park (52,066), Orland Park (58,590), Palatine (69,350), Park Ridge (37,839), Schaumburg (74,907), Skokie (65,176), Streamwood (40,351), Tinley Park (57,282), Wheeling (38,015) and Woodridge (33,408)

Demographics
  • Population in 2013.........................................................5,240,700
  • Population Increase (2010–13)...................................0.9%
  • Persons per square mile.............................................5,495.1

Education
  • School Districts: A list of Chicago Public Schools can be found online at www.cps.edu; and Cook County public school districts that fall outside of the city limits can be viewed at www.cescook.org.
  • Educational Attainment: (Adult Population 2013)
    • o High school diploma.......................................84.1%
    • o College degrees..............................................34.3%

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For more information about Cook County, visit the website at www.cookcountyil.gov.

DUPAGE COUNTY—OVERVIEW
DuPage County is a heavily urbanized county that is located just 25 miles west of Chicago with the town of Wheaton as the county seat. The county’s 327.50 square miles of land contain a strong retail base and a well-developed interstate highway network that includes I-55, I-88, I 290, I-294 and I-355. A great deal of traffic is seen throughout the county as many residents commuting to and from Chicago daily. The average annual precipitation in DuPage County is 37.94 inches, and the mean temperature is 50.9°F. The growing season lasts 170 days. Recreation within the county is readily available with more than 50 golf courses, 92 miles of multiuse trails and more than 60 forest preserves.

Major Communities (2013 Population): Addison (37,385), Aurora (199,963), Bartlett (41,679), Bolingbrook (73,936), Carol Stream (40,379), Downers Grove (49,670), Elk Grove Village (33,419), Elmhurst (45,556), Glendale Heights (34,620), Hanover Park (38,510), Lombard (43,907), Naperville (144,864), Schaumburg (74,907), St. Charles (33,264), Wheaton (53,648) and Woodridge (33,408)

Demographics
  • Population 2013.............................................................932,126
  • Population Increase (2010–13)..................................1.7%
  • Persons per square mile.............................................2,799.8

Education
  • School Districts: A complete list of DuPage County school districts can be found at www.dupage.k12.il.us.
  • Educational Attainment: (Adult Population 2013)
    • High school diploma.......................................91.9%
    • College degrees..............................................45.9%

For more information about DuPage County, visit the website at www.dupageco.org.

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