Measuring wage inequality within and across U.S. metropolitan areas, 2003–13

Source: J. Chris Cunningham, U.S. Bureau of Labor Statistics, Monthly Labor Review, September 2015

From the abstract:
This article shows that location, size, and occupational composition play important roles in determining the level of wage inequality within and across U.S. metropolitan areas. Larger areas, especially in the Northeast and on the West Coast, typically have greater wage inequality, while smaller areas, many of which are in the South and Midwest, have less inequality. Metropolitan areas with high concentrations of employment in higher paying occupations also tend to have greater inequality.