I am not going on a quest for my binder full of (black) women birth statistics right now, but about 10% of black births in recent years are multiracial (that is, black is one of the races listed, but not the only one). So they’ve started breaking that out and putting it in the “black” birth total. But since this is births from black moms, this is also a measure of interracial marriage and birth for black women. Anyway, that number is currently something like 55/45 or 60/40 wed/unwed. It’s also getting close to parity with black men fathering children interracially. Interracial birth is converging more rapidly than overall interracial marriage among black men and black women because married black women have more children with nonblack husbands.
And foreign-born black moms represent 1 in 6 black births these days and are on track to represent 1 in 5 by as early as 2018.
I was going to add more, but I can’t remember it right now since I’m also trying to supervise cleanup (“I don’t know who did it!”) of a mysterious cucumber soda spill.