Ogden Dunes is a town in Portage Township, Porter County, Indiana, United States. It is located on the shore of Lake Michigan, within Indiana Dunes National Park and nearly surrounded by the city of Portage. The population was 1,168 as of the 2020 census. It is named for multi-millionaire Francis A. Ogden, who owned the land there before his death in 1914. His main interest in the land where the dunes are was the sand which could be scooped up and sold, with more sand being replenished naturally over time.