Estimated Percent of People of All Ages in Poverty for Northumberland County, PA was 14.00% in January of 2022, according to the United States Federal Reserve. Historically, Estimated Percent of People of All Ages in Poverty for Northumberland County, PA reached a record high of 15.90 in January of 2014 and a record low of 10.20 in January of 2003. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimated Percent of People of All Ages in Poverty for Northumberland County, PA - last updated from the United States Federal Reserve on May of 2024.