Resident Population in Milwaukee County, WI was 916.20500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Milwaukee County, WI reached a record high of 1058.60000 in January of 1972 and a record low of 916.20500 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Milwaukee County, WI - last updated from the United States Federal Reserve on May of 2024.