Household income distribution according to the Gini Index of income inequality in the United States from 1990 to 2022

In 2022, according to the Gini coefficient, household income distribution in the United States was 0.47. This figure was at 0.43 in 1990, which indicates an increase in income inequality in the U.S. over the past 30 years.

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Statista 
United States Census Bureau

Distribution of Household Wealth in the U.S. 2023

The Distribution of Household Income in 2020

In 2020, the coronavirus pandemic and the ensuing federal response had significant effects on the distribution of household income. Income inequality before transfers and taxes increased, but inequality after transfers and taxes decreased.

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Congressional Budget Office.

Wages for the top 1% skyrocketed 160% since 1979 while the share of wages for the bottom 90% shrunk

These disparities in long-term wage growth reflect a major redistribution upward of wages since 1979, as noted earlier. The bottom 90% earned 69.8% of all earnings in 1979 but only 60.9% in 2019. In contrast, the top 1.0% nearly doubled its share of earnings from 7.3% in 1979 to 13.2% in 2019. The growth of wages for the top 0.1% is the major dynamic driving the top 1.0% earnings as the top 0.1% more than tripled its earnings share, from 1.6% in 1979 to 5.0% in 2019.

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Economic Policy Institute.

Share top 10% wealth

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Organisation for Economic Co-operation and Development