Westport, SD

ZIP code 57481 covers Waubay and surrounding rural areas in Day County, northeastern South Dakota. Its best-known landmarks include Waubay Lake, a glacial lake popular for fishing and boating, and Waubay National Wildlife Refuge, which protects prairie wetlands and provides habitat for migratory birds. The small community of Waubay serves as a local center, while agriculture and outdoor recreation characterize the surrounding landscape.