"Chicago-based" refers to businesses, organizations, or individuals that are located in or operate from Chicago, Illinois. This term is often used to describe companies that have their headquarters or primary offices in the city, which is known for its diverse economy and vibrant culture. Chicago is the third-largest city in the United States and serves as a major hub for various industries, including finance, technology, and manufacturing. Being "Chicago-based" can also imply a connection to the city's rich history, architecture, and cultural institutions, such as the Art Institute of Chicago and Millennium Park.