Floodwood is a city in Saint Louis County, Minnesota, United States. The population was 517 at the 2020 census. Originally a logging commun…Floodwood is a city in Saint Louis County, Minnesota, United States. The population was 517 at the 2020 census. Originally a logging community, Floodwood was a dairy community for most of its history, but could now be best described as a bedroom community, since most of its working population finds employment in nearby Duluth, Grand Rapids, Hibbing and Cloquet. The city calls itself "The Catfish Capital of the World", a nickname it gave itself following the introduction of its annual Catfish Days festival.