About This Statistic
This statistic shows the income inequality of families in the United states from 1990 to 2016, based on the Gini index. The Census Bureau defines the Gini index as “a statistical measure of income inequality ranging from 0 to 1. A measure of 1 indicates perfect inequality, i.e., one household having all the income and rest having none. A measure of 0 indicates perfect equality, i.e., all households having an equal share of income.” In 2016, the Gini index for the income distribution of U.S. families stood at 0.452.