Frey finds that, despite their rising numbers, urban minorities remain isolated from whites in many cities
"American cities are becoming more diverse—and more segregated" - Quartz. 12/16/2016.
Although minorities - blacks, Hispanics, Asians, and other non-white groups - account for 98% of the growth in large US cities, the diversity is spread unevenly in metro area neighborhoods. William Frey who analyzed data on the racial/ethnic make-up of the 100 largest cities, found that while some cities such as Las Vegas are less segregated, in others "white" neighborhoods persist, unaffected by the influx of minorities.