ASIAN POPULATION. Click on a state to view related charts and data. For Census purposes, the racial category Asian inclues Asian Indians, Chinese, Fillipino, Japanese, Korean, Vietnamese, and a number of other Asian ethnicities. The nation's Asian population grew at percent between July and , with migration responsible for the majority of the growth, government officials said Thursday. There are now 21 million Asians in the United States . QuickFacts UNITED STATES. QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5, or more.