Income Inequality in Napa County, CA was 15.38174 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Napa County, CA reached a record high of 15.53069 in January of 2021 and a record low of 13.11755 in January of 2013. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Napa County, CA - last updated from the United States Federal Reserve on May of 2024.