A new report says nearly 15% of all new marriages in the United States are between partners of different races or ethnicity.
The study, by the Pew Research Institute, is based on its own findings and US census data for 2008.
It shows a doubling of the rate of interracial marriages for whites and a tripling for blacks.
As late as 1967, 15 states had laws on their books banning marriage between blacks and whites, the institute notes.
In that year, the US Supreme Court declared those laws unconstitutional.
According to the Pew study, a large influx of Hispanic and Asian immigrants in following years fuelled the increase in mixed marriages.