Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Waukesha County, WI was 352772.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Waukesha County, WI reached a record high of 354614.00000 in January of 2019 and a record low of 347301.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Waukesha County, WI - last updated from the United States Federal Reserve on May of 2024.