Resident Population in Kewaunee County, WI was 20.69000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Kewaunee County, WI reached a record high of 20.69000 in January of 2023 and a record low of 18.89300 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Kewaunee County, WI - last updated from the United States Federal Reserve on May of 2024.