Johannesburg, MI

ZIP code 49751 belongs to Mackinac Island, Michigan, a picturesque island in Lake Huron. Known for its stunning natural beauty and lack of motor vehicles, the island is home to iconic landmarks such as Arch Rock, Fort Mackinac, and the Grand Hotel. Visitors can explore the island's charming downtown area, take a horse-drawn carriage tour, or relax on one of its many scenic beaches.