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This is a list of countries or dependencies by income inequality metrics, including Gini coefficients. The Gini coefficient is a number between 0 and 1, where 0 corresponds with perfect equality (where everyone has the same income) and 1 corresponds with perfect inequality (where one person has all the income—and everyone else has zero income). Income distribution can vary greatly from wealth distribution in a country (see List of countries by distribution of wealth). Income from black market economic activity is not included and is the subject of current economic research.[1][2]
Countries' income inequality (2014) according to their Gini coefficients measured in percent: red = high, green = low inequality
UN and CIA Combined List – Income ratios and Gini (1995 – present)
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^Data show the ratio of the household income or consumption share of the richest group to that of the poorest. Household income or consumption by percentage share (%), The World Factbook, CIA, updated on January 24, 2008. Note: To calculate the value given in the table for this article, the highest 10% value was divided by the lowest 10% value.
^Data show the ratio of the income or expenditure share of the richest group to that of the poorest. Human Development Report 2009, UNDP, accessed on July 30, 2011.
^Data show the ratio of the income or expenditure share of the richest group to that of the poorest. Human Development Report 2007/2008, UNDP, accessed on February 3, 2008.