They are ahead also of atheists and agnostics.
The study by Pew used the four-year college degree as the marker, saying it is generally regarded as the key asset for economic success.
Hindus accounted for the largest share of those with college degrees, with 77%. Unitarians, a religious group that says it has no creed and draws inspiration from a range of sacred scriptures came second with 67%. Jews and Anglican church adherent were a joint third at 59%, and Episcopal church rounded off the top five with 56%.