Per capita market income is a measure of an area’s total personal income, less transfer payments, divided by the resident population of the area. The map uses natural breaks in the distribution to organize the data into groups of common values. The Appalachian per capita market income rates range from $9,177 to $40,522. The Appalachian average is $25,391. The U.S. average is $34,004. For a list of county data by state, see the downloadable Excel file.