Cornucopia is an unincorporated census-designated place in the town of Bell in northern Bayfield County, Wisconsin, United States. It is situated on Lake Superior at the northern end of the Bayfield Peninsula. It is along Wisconsin Highway 13 and County Highway C. As of the 2020 census, its population was 103, up from 98 at the 2010 census. The community borders the lake at Siskiwit Bay, between Roman's Point and Mawikwe Point.