The Indian-American population shot up 76 per cent in the first 12 years of the 21st century, a report on demographics of the Asian-American population released by the Center for American Progress said.
While the Chinese-Americans form the largest group of Asian-American population with 4.1 million (22 per cent), Filipinos-Americans are placed second with 3.59 million (19 per cent) followed by Indian-Americans with 3.34 million (18 per cent).
Indian-Americans grew 76 per cent from 2000 to 2012, compared to Filipino-Americans who expanded by 52 per cent in the corresponding period.
Japanese-Americans - who were once in the top two Asian-American communities - have seen a decline in population share. They form the smallest of the top six groups.
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"While this shows a fair amount of national origin concentration, it nevertheless represents a decline from 89 per cent for these top six groups in 2000, as smaller Asian American groups have grown disproportionately in the last decade," the report said.
As many as 56 per cent of the Asian-American population lives in the top five states of California, New York, Texas, New Jersey, and Hawaii.
Some smaller groups such as Bangladeshi-Americans are growing at an exceptional rate - 177 per cent between 2000 and 2010. If this rate is maintained, it will have a large impact on the future diversity of the Asian-American community, the report, by Karthick Ramakrishnan and Farah Ahmad, said.