Lakeside is a private community and census-designated place in Danbury Township, Ottawa County, Ohio, United States, on the shores of Lake Erie. It was formed in 1873 by members of the Methodist Church and remains a church-affiliated vacation resort and United Methodist Annual Conference site. It is one of only a few continuously operating Independent Chautauquas that persist in the 21st century. Located just west of the village of Marblehead, the community is approximately one square mile in size. As of the 2020 census, Lakeside had a population of 668. The entire community is listed on the National Register of Historic Places as the Lakeside Historic District.