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
Do 77% of people believe in St Michael and let Jesus take the wheel and all that, or if you ask them do they think back to Sunday school and think oh, yeah, I mean whatever - I don’t want this pollster thinking I’m godless.
Also like... is historical materialism the end goal here, or an equitable and just society for all people? Plenty of people throughout history have taken to Marxist and socialist thought without rejecting spirituality.