The Pew research foundation recently released some data comparing generational cohorts. Data on the acceptance of interracial dating shows that acceptance is increasing among all groups and is higher for each successive cohort:
C.N. Lee, at Asian Nation, interprets:
I am also not surprised that the Millennials are the most supportive of interracial dating, as the graph illustrates. However, in looking at the graph, it shows that somewhere around 2007, the approval rates for interracial dating actually declined slightly for Baby Boomers, Generation X, and the Millennials. Further, at this point, we do not yet know whether the approval rate for interracial dating will continue to decline, or whether it will rebound and continue its upward trajectory.
See also our post on rates of support for gay marriage by age.