Income Inequality in Johnson County, IA was 19.62613 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Johnson County, IA reached a record high of 22.29352 in January of 2018 and a record low of 16.92279 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Johnson County, IA - last updated from the United States Federal Reserve on May of 2024.