Resident Population in Ozaukee County, WI was 93.95600 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Ozaukee County, WI reached a record high of 93.95600 in January of 2024 and a record low of 54.46100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Ozaukee County, WI - last updated from the United States Federal Reserve on April of 2026.