These are the numbers of graduating majors in classics, Ancient Greek, or Latin at several universities for a recent year based on IPEDS information:
William & Mary: 14
UChicago: 14
Brown: 12
Harvard: 11
Princeton: 10
Stanford: 9
UPenn: 9
Georgetown: 8
Yale: 7
Columbia/Barnard: 6
Cornell: 6
Tufts: 4
Brandeis: 2
Johns Hopkins: 2
Note that archaeology appears under Social Sciences. Brown, for example, shows 3 graduates in archaeology: College Navigator - Brown University.