From the Washington Post (AP):
FLAGSTAFF, Ariz. — Almost half of American Indians and Alaska Natives identify with multiple races, representing a group that grew by 39 percent over a decade, according to U.S. Census data released Wednesday.
Of the 5.2 million people counted as Natives in 2010, nearly 2.3 million reported being Native in combination with one or more of six other race categories, showcasing a growing diversity among Natives. Those who added black, white or both as a personal identifier made up 84 percent of the multi-racial group.
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Census Director Robert Groves said the bureau has projected that the overall Native population will increase to 6.8 million in 2030 and about 8.6 million in 2050. Both multiracial Natives and Natives alone grew at a rate higher from 2000 to 2010 than the U.S. population at large.
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—The majority of Natives live in 10 states: Arizona, California, Florida, Michigan, New Mexico, New York, North Carolina, Oklahoma, Texas and Washington.