Crystal Falls, MI

ZIP code 49920 covers Copper Harbor, in Michigan’s Keweenaw Peninsula, a small Lake Superior community known for its maritime and mining history. Major landmarks include Fort Wilkins Historic State Park, with a restored 19th-century military post, and Copper Harbor Lighthouse, at the harbor’s entrance. Nearby Brockway Mountain Drive offers views across the peninsula and Lake Superior; Copper Harbor is also a departure point for Isle Royale National Park.