Resident Population in Waushara County, WI was 24.93400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Waushara County, WI reached a record high of 24.99900 in January of 2022 and a record low of 14.79500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Waushara County, WI - last updated from the United States Federal Reserve on May of 2024.