Net County-to-County Migration Flow (5-year estimate) for Westmoreland County, PA was -4460.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Westmoreland County, PA reached a record high of -353.00000 in January of 2013 and a record low of -4460.00000 in January of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Net County-to-County Migration Flow (5-year estimate) for Westmoreland County, PA - last updated from the United States Federal Reserve on May of 2024.