Among blacks and Asians, there are stark differences by gender in the tendency to marry outside their own racial group. Some 22% of all black male newlyweds in 2008 married outside their race, compared with just 9% of black female newlyweds. Among Asians, the gender pattern runs the opposite way. Some 40% of Asian female newlyweds in 2008 married outside their race, compared with just 20% of Asian male newlyweds.

Among whites and Hispanics, by contrast, there are no gender differences in intermarriage rates. About 9% of both male and female white newlyweds in 2008 married a nonwhite spouse, and about a quarter of both male and female Hispanic newlyweds in 2008 married someone who is not Hispanic.