As of 2015, residential segregation had taken new forms in the United States with black majority minority suburbs such as Ferguson, Missouri, supplanting the historic model of black inner cities, white suburbs. Meanwhile, in locations such as Washington, D.C., gentrification had resulted in development of new white neighborhoods in historically black inner cities. Segregation occurs through premium pricing by white people of housing in white neighborhoods and exclusion of low-income housing rather than through rules which enforce segregation. Black segregation is most pronounced; Hispanic segregation less so, and Asian segregation the least.