English: This map shows the Gini Index distribution by County for 2006-2010.
According to US Census Bureau, the map illustrates each county’s level of income inequality, as measured by the Gini index. The 5-year 2006–2010 Gini index for the United States as a whole was 0.467. County-level Gini indexes ranged from 0.645 to 0.207.