The Chicago Metropolitan Statistical Area (CMSA) is a densely populated region in the United States centered around the city of Chicago. It includes parts of Illinois, Indiana, and Wisconsin, encompassing several counties. The area is known for its diverse economy, cultural institutions, and significant transportation networks. The CMSA is one of the largest metropolitan areas in the country, with millions of residents. It features a mix of urban and suburban communities, offering a variety of housing, education, and employment opportunities. Key attractions include the Art Institute of Chicago, Millennium Park, and the Chicago River.