sentences:  After-tax, the Federal Reserve estimated that 34 states in the USA have a Gini index between 30 and 35, with Maine the lowest.At the county and municipality levels, the 2010 market income Gini index ranged from 21 to 65, according to Census Bureau estimates.The United States has the highest level of income inequality in the Western world, according to a 2018 study by the United Nations Special Rapporteur on extreme poverty and human rights.