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| Metropolitan Chicago | |
|---|---|
| Name | Metropolitan Chicago |
| Other name | Chicagoland |
| Settlement type | Megalopolis |
| Subdivision type | Country |
| Subdivision name | United States |
| Subdivision type1 | State(s) |
| Subdivision name1 | Illinois, Indiana, Wisconsin |
| Established title | Founded |
| Established date | 19th century (urban growth) |
| Area total km2 | 28,000 |
| Population total | 9,500,000 (approx.) |
| Population as of | 2020s |
| Timezone | Central Time Zone (North America) |
Metropolitan Chicago is the major urban area centered on the city of Chicago, Illinois and extending into parts of Cook County, Illinois, DuPage County, Illinois, Lake County, Illinois, Will County, Illinois, Kane County, Illinois, McHenry County, Illinois, Lake County, Indiana, and Kenosha County, Wisconsin. The region anchors the Midwestern United States and is a hub for transportation, finance, manufacturing, media, culture, and education, with major institutions such as O'Hare International Airport, Northwestern University, University of Chicago, Federal Reserve Bank of Chicago, and the corporate headquarters of Boeing, McDonald's, Exelon.
The metropolitan area occupies the southwestern shore of Lake Michigan and spans glaciated plains, river valleys, and the Chicago Portage corridor linking the Great Lakes and Mississippi River watersheds; major waterways include the Chicago River, Des Plaines River, Fox River (Illinois), and the Calumet River. Municipal boundaries interlock among Chicago suburbs, including Evanston, Illinois, Oak Park, Illinois, Naperville, Illinois, Schaumburg, Illinois, Aurora, Illinois, Gary, Indiana, and Kenosha, Wisconsin, producing contiguous development across Cook County, Illinois and adjacent counties; regional planning uses definitions such as the Chicago metropolitan area (MSA) and the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area. Topography features the Chicago Plain, wetlands like the Skokie Lagoons, and reclaimed sites such as the Calumet Region industrial corridors.
Settlement and growth accelerated after the Canal Age projects—most notably the Illinois and Michigan Canal—and the completion of the Illinois Central Railroad and Galena and Chicago Union Railroad, which transformed Chicago into a transportation and commodity hub by the mid-19th century. The Great Chicago Fire and subsequent Chicago World's Columbian Exposition prompted rebuilding, architectural innovations by firms such as Burnham and Root and Louis Sullivan, and the emergence of the Chicago School (architecture). Industrial expansion in the late 19th and early 20th centuries drew migrants via the Great Migration and immigrants from Italy, Poland, Ireland, and Germany, shaping neighborhoods like Pilsen, Chicago, Little Italy, Chicago, and Ukrainian Village, Chicago. Postwar suburbanization followed the construction of the Interstate Highway System and the Chicago Transit Authority expansions, while deindustrialization in the late 20th century affected the Calumet Region and prompted redevelopment efforts such as the Chicago Lakeside Development.
The region's population includes diverse communities of African American, Hispanic and Latino Americans, Asian American, Irish American, Polish American, and Italian American heritage, concentrated in neighborhoods like Bronzeville, Pilsen, Chicago, Chinatown, Chicago, and suburbs such as Des Plaines, Illinois and Arlington Heights, Illinois. Census tracts reflect patterns studied by the United States Census Bureau and metropolitan analysts at the Chicago Metropolitan Agency for Planning and the Regional Transportation Authority (RTA), showing trends in aging, migration, and socioeconomic change across core Cook County, Illinois and outlying counties such as Kane County, Illinois and Will County, Illinois. Population shifts include suburban growth in Naperville, Illinois and Aurora, Illinois and urban revitalization in River North, Chicago and West Loop, Chicago.
Metropolitan Chicago hosts headquarters and major operations for corporations such as Boeing (regional presence), Caterpillar Inc., Walgreens Boots Alliance, McDonald's, United Airlines, and CME Group, concentrated in the Chicago Loop, O'Hare International Airport commerce zone, and industrial corridors in the Calumet Region. Key sectors include manufacturing arms associated with firms like ArcelorMittal, food processing with companies such as Conagra Brands, financial services at institutions like Northern Trust and BMO Harris Bank, and logistics centered on the Port of Chicago, Intermodal container terminals, and the BNSF Railway and Canadian National networks. Economic development organizations include the World Business Chicago, the Illinois Department of Commerce and Economic Opportunity, and public–private partnerships involved in initiatives like the Chicago Riverwalk and the Obama Presidential Center.
The region's multimodal infrastructure includes O'Hare International Airport, Midway International Airport, the Chicago Transit Authority rapid transit system, Metra commuter rail, and the South Shore Line interurban connection to Indiana. Major highways such as Interstate 90, Interstate 94, Interstate 55, and Interstate 290 interlink suburbs and the central business district; freight corridors are served by railroads including Union Pacific Railroad, Norfolk Southern Railway, BNSF Railway, and Canadian National Railway, while waterborne commerce uses the Illinois Waterway and the Port of Chicago facilities. Infrastructure agencies like the Illinois Tollway and the Metropolitan Transit Authority (Chicago) coordinate projects including O'Hare Modernization Program upgrades, transit-oriented developments near Ogilvie Transportation Center, and resilience initiatives responding to events like Hurricane Ida impacts and urban flooding episodes.
Cultural institutions include the Art Institute of Chicago, Field Museum of Natural History, Museum of Science and Industry (Chicago), Chicago Symphony Orchestra, Lyric Opera of Chicago, and performing venues in the Chicago Theatre District; festivals such as Lollapalooza, Taste of Chicago, Chicago Jazz Festival, and Mardi Gras-style neighborhood celebrations draw visitors. Sports franchises—Chicago Bears, Chicago Bulls, Chicago Cubs, Chicago White Sox, and Chicago Blackhawks—anchor civic identity alongside landmarks like Willis Tower, Navy Pier, Millennium Park, and the Magnificent Mile. Neighborhood cultural scenes from Wicker Park, Chicago to Hyde Park, Chicago host galleries, music venues, and institutions including The Second City and the Steppenwolf Theatre Company, contributing to tourism and creative economy clusters.
Regional governance involves county boards such as the Cook County Board of Commissioners, municipal governments of Chicago, Illinois and suburban cities, and planning entities including the Metropolitan Planning Council, the Chicago Metropolitan Agency for Planning (CMAP), and the Regional Transportation Authority (RTA), which coordinate land use, transportation, and environmental planning across jurisdictions. Legal and regulatory frameworks engage state authorities like the Illinois General Assembly and interstate cooperation with Indiana and Wisconsin agencies on issues spanning water management at the Chicago River and Lake Michigan, economic development programs with the Illinois Department of Commerce and Economic Opportunity, and emergency response coordination through entities such as the Federal Emergency Management Agency.