Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in St. Croix County, WI was 86791.00000 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 St. Croix County, WI reached a record high of 86791.00000 in January of 2022 and a record low of 76908.00000 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 St. Croix County, WI - last updated from the United States Federal Reserve on May of 2024.