Recent Census Bureau projections have this tipping point being reached in the 2040s.
Regardless of the exact year in which this milestone is reached, the United States has already become a much more racially and ethnically diverse country in recent decades, particularly when considering the recent growth of Hispanic and Asian populations in the United States.
From 2000-2010, the Hispanic and Asian populations increased their respective percentage shares the overall American population. As an overall percentage share of the U.S. population, Black residents remained relatively unchanged at 12%. From 2000 to 2010, however, the Hispanic share grew from 13% to 16%. The Asian share, in turn, grew from 4% to 5%.
Tomorrow (June 13th), the Census Bureau will release estimates of the U.S. population as it was on July 1, 2012. And while tomorrow's estimates do not constitute a new census (the next official census will be in 2020), they will give us insight into a variety of population trends, including those of race and ethnicity.
December 12, 2012 Article by Hope Yen on Census Bureau Projections