Williams Bay, WI

ZIP code 53191 serves the village of Williams Bay on Wisconsin’s Geneva Lake. It includes shoreline access to Geneva Lake, Williams Bay Beach, and sections of the Geneva Lake Shore Path. A major landmark is Yerkes Observatory, a historic astronomical research facility known for its large refracting telescope. The area also contains Kishwauketoe Nature Conservancy, a lakeside preserve with wetlands, woodland trails, and native habitats.