Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Buffalo County, SD was 343.00000 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 Buffalo County, SD reached a record high of 377.00000 in January of 2015 and a record low of 178.00000 in January of 2010. 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 Buffalo County, SD - last updated from the United States Federal Reserve on May of 2024.