Pew releases a study by  Paul Taylor and Richard Fry that found a rise in income segregation by neighborhood:

Here is what they said in brief

“Residential segregation by income has increased during the past three decades across the United States and in 27 of the nation’s 30 largest major metropolitan areas, according to a new analysis of census tract² and household income data by the Pew Research Center.The analysis finds that 28% of lower-income households in 2010 were located in a majority lower-income census tract, up from 23% in 1980, and that 18% of upper- income households were located in a majority upper-income census tract, up from 9% in 1980.^“

Read article: Income Segregation