metro atlanta has an increasingly international population, with 716,434 foreign-born residents in 2010, a 69% increase since 2000, with suburban gwinnnett county being one of the most diverse counties in the southeastern united states. this was the fourth largest rate of growth among the nation's top 100 metros, after baltimore, orlando and las vegas. the foreign-born proportion of the population went up from 10.3% to 13.6%, and atlanta moved up from 14th to 12th in ranking of u.s. metro areas with the largest immigrant population by sheer numbers. still, its 13.6% proportion of immigrants is only the 29th highest of the nation's top 100 metros.