The Chicago MSA, or Chicago Metropolitan Statistical Area, is a region that includes the city of Chicago and its surrounding suburbs. It is one of the largest metropolitan areas in the United States, encompassing parts of Illinois, Indiana, and Wisconsin. The MSA is known for its diverse economy, cultural institutions, and significant population, making it a key hub for commerce and industry. The Chicago MSA is home to over 9 million residents, making it the third most populous metropolitan area in the country. It features a variety of neighborhoods, each with its own unique character, and offers numerous attractions, including Millennium Park, Navy Pier, and the Art Institute of Chicago. The region is also well-connected through an extensive public transportation system.