EDIT: adding my sources for these stats up here. (I posted a comment with them but it seems like a lot of people aren't seeing it.)

40% of American adults believe in young-earth creationism

77% of American adults believe angels are real - kind of an old source (2011) but I don't get the feeling that the number has dropped a whole lot since then

EDIT2: I found a more recent figure for belief in angels: 72% as of 2016. Thanks @T_Doug