Income inequality in the U.S. is the highest of all the G7 nations, according to data from the Organization for Economic Cooperation and Development. To compare income inequality across countries, the OECD uses the Gini coefficient, a commonly used measure ranging from 0, or perfect equality, to 1, or complete inequality. In 2017, the U.S. had a Gini coefficient of 0.434. In the other G7 nations, the Gini ranged from 0.326 in France to 0.392 in the UK.
Globally, the Gini ranges from lows of about 0.25 in some Eastern European countries to highs of 0.5 to 0.6 in countries in southern Afri