Detroit is the largest and most populous city in the U.S. state of Michigan, the largest city on the United States–Canada border, and the seat of Wayne County. The municipality of Detroit had a 2017 estimated population of 673,104, making it the 23rd-most populous city in the United States. The metropolitan area, known as Metro Detroit, is home to 4.3 million people, making it the second-largest in the Midwest after Chicago. Regarded as a major cultural center, Detroit is known for its contributions to music and as a repository for art, architecture and design.