Portage, IN

ZIP code 46368 serves Portage, a city in Porter County, northwestern Indiana, along the southern shore of Lake Michigan. Its best-known natural landmark is Portage Lakefront and Riverwalk, a public beach and trail area within Indiana Dunes National Park. Other notable local destinations include Imagination Glen Park, with wooded trails and recreation facilities, and Woodland Park, a large municipal park with sports fields, playgrounds, and an aquatics center.