Income Inequality in Grafton County, NH was 17.54085 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Grafton County, NH reached a record high of 17.54085 in January of 2022 and a record low of 12.14368 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Grafton County, NH - last updated from the United States Federal Reserve on May of 2024.