"Mixed-race children have blurred America's color line.They often interact with others on either side of the racial divide and frequently serve as brokers between friends and family members of different racial backgrounds," he said.
In all, more than 15 percent of new marriages in 2010 were interracial.
The numbers also coincide with Pew survey data showing greater public acceptance of mixed marriage, coming nearly half a century after the Supreme Court in 1967 barred race-based restrictions on marriage.
Blacks are now substantially more likely than before to marry whites.
have climbed to 4.8 million - a record 1 in 12 - as a steady flow of new Asian and Hispanic immigrants expands the pool of prospective spouses.
RELATED: 46% OF MISSISSIPPI REPUBLICANS SAY INTERRACIAL MARRIAGE SHOULD BE ILLEGAL: POLL Minorities, young adults, the higher educated and those living in Western or Northeast states were more likely to say mixed marriages are a change for the better for society.
The figure was 61 percent for 18- to 29-year-olds, for instance, compared to 28 percent for those 65 and older.
Of the 275,500 new interracial marriages in 2010, 43 percent were white-Hispanic couples, 14.4 percent were white-Asian, 11.9 percent were white-black, and the remainder were other combinations.
Still, the share of Asians who intermarried has actually declined recently - from 30.5 percent in 2008 to 27.7 percent in 2010.
For purposes of defining interracial marriages, Hispanic is counted as a race by many in the demographic field.
RELATED: KENTUCKY CHURCH REVISITS INTERRACIAL COUPLE BAN AFTER UPROAR The study finds that 8.4 percent of all current U. marriages are interracial, up from 3.2 percent in 1980.
A Pew Research Center study, released Thursday, details a diversifying America where interracial unions and the mixed-race children they produce are challenging typical notions of race.