Resident Population in Florence County, WI was 4.67300 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Florence County, WI reached a record high of 5.19700 in January of 1995 and a record low of 3.29800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Florence County, WI - last updated from the United States Federal Reserve on April of 2026.