Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Westmoreland County, PA was 327570.00000 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 Westmoreland County, PA reached a record high of 347844.00000 in January of 2010 and a record low of 327570.00000 in January of 2022. 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 Westmoreland County, PA - last updated from the United States Federal Reserve on May of 2024.