Too late, there is one in my house.
Bloomingdale Blog- zip code 20001 tenth most whitened zip code in the US from 2000 to 2010
Washington City Paper/ City Desk- White People Flocking to Shaw, Nearby Neighborhoods
Washington Post- D.C. has three of America's most-whitened Zip codes
Most reference- Thomas B. Fordham Institute- The fastest-gentrifying neighborhoods in the United States