A recent release from the U.S. Census Bureau has showed that interracial or interethnic opposite-sex married couple households grew by 28% over the decade from 7% in 2000 to 10% in 2010.
A higher percentage of unmarried partners were interracial or interethnic than married couples. Nationally, 10% of opposite-sex married couples had partners of a different race or Hispanic origin, compared with 18% of opposite-sex unmarried partners and 21% of same-sex unmarried partners.
Despite the diversity among households in the United States in 2010, the majority of the population fell into three groups in terms of their relationship to the person who owned or rented the home (the householder). The householder, their spouse, and their sons and daughters comprised 262 million people or 87% of the population in 2010. Of the 89 million children of householders, 93% were biological children. There were approximately twice as many stepchildren (4.2 million) as adopted children (2.1 million).
The report also found that there was a 41% increase in unmarried partner households between 2000 and 2010. Opposite-sex unmarried partner households grew from 4.9 million in 2000 to 6.8 million in 2010. Same-sex unmarried partner households grew from 358,000 to 646,000 from 2000 to 2010, or from 0.3% of all households to 0.6% of all households.