Asian-Americans were the fastest-growing racial or ethnic group in America, now comprising almost 19 million people, according to data released Thursday by the Census Bureau.

And the state with the fastest-growing Asian population? South Dakota. Home to Mount Rushmore, Laura Ingalls Wilder's "Little Town on the Prairie," and now Kharka Khapangi — a Bhutanese refugee who moved from the state of Washington to Sioux Falls, S.D., in 2011.

"It's easy to find a job here in South Dakota, so people from other states, they are also moving here," Khapangi said.

South Dakota's Asian population grew just more than 7 percent last year, to almost 12,000, which may not seem like much compared to the 6 million Asians living in California. But the Census Bureau says it shows just how much the Asian population has grown overall throughout the country to become the nation's fastest-growing racial group.

Other minority populations continued to grow as well. The Hispanic population — the country's second-largest racial or ethnic group — grew by 2.2 percent. While most of the growth in the country's Asian population — almost 60 percent — is fueled by international migration, the increase in Hispanic-Americans — is due primarily to natural births.

Overall, the Census says the number of people of color in the country grew by 1.9 percent from 2011 to 2012. People of color now compose about 37 percent of the total population. Among children under 5, children of color are almost a majority — 49.9 percent of that age group in 2012.

The data released Thursday comes from a set of annual population estimates compiled by the Census Bureau, examining changes in the population between July 2011 and July 2012.

Update: As well as the numbers of people of color in the country growing, it's worth highlighting some of the interesting shifts happening within America's minority population as well. Washington, D.C., for example — one of five states or "equivalents" in the US with a majority-minority population — is now evenly divided among blacks and other races. Blacks are now 50.1 percent of the population, down from as high at 71 percent in the 1970s. Thanks to Matt Stiles of NPR's news apps team for the tip.

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