Resident Population in Pierce County, WI was 43.02600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Pierce County, WI reached a record high of 43.02600 in January of 2023 and a record low of 26.65200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pierce County, WI - last updated from the United States Federal Reserve on May of 2024.