Gini Index of Income Inequality for U.S. Counties

This visualization displays U.S. Census Bureau American Community Survey Gini index estimates for U.S. counties.  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.” For an analysis of the ACS Gini index data, see the Census Brief: Houshold Income Inequality Within U.S. Counties.

The visualization allows the viewer to filter the counties displayed on the map by Gini index. Links into American FactFinder from the mouseover Tooltip for each county on the map provide further economic data including median household income, poverty, and insurance coverage data for the county.


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