Income Inequality in Northumberland County, PA was 11.83609 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Northumberland County, PA reached a record high of 12.30374 in January of 2019 and a record low of 10.49509 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Northumberland County, PA - last updated from the United States Federal Reserve on May of 2024.