Joplin, MT

ZIP code 59531 covers the town of Havre, Montana. Home to Montana State University-Northern, this area is known for its historic landmarks such as the Havre Beneath the Streets tour, showcasing underground tunnels from the early 1900s. Additionally, the nearby Bear Paw Battlefield commemorates the Nez Perce War of 1877, making ZIP code 59531 a significant location for both history and education.