Independent cities are considered county-equivalent by the Census Bureau.
[1] The chart below depicts the 100 highest income counties in the United States by median household income according to the US Census Bureau's American Community Survey data for 2016-2020, in constant 2020 dollars.
[2][3] Virginia has the most counties in the top 100 with 18 followed by California with 11; Maryland with 10; New Jersey with nine; Texas with seven, New York and Illinois with six each; Colorado and Massachusetts with four each; Georgia, Minnesota, and Pennsylvania with three each; Indiana, Ohio, Utah, and Washington with two each; and Alaska, Connecticut, Washington, D.C., Kansas, Kentucky, New Hampshire, New Mexico and Tennessee with one each.
The following table of the 100 highest income counties in the United States by per capita income is from the American Community Survey data for 2017-2021, in constant 2021 dollars.
[4][5] For more detailed lists of rankings of counties and places in the individual states, see the following pages: