These are the numbers of graduating majors in classics, Ancient Greek, or Latin at several liberal arts colleges for a recent year based on IPEDS information:
Oberlin: 12
Holy Cross: 9
Hamilton: 6
Haverford: 5
Kenyon: 4
Carleton: 3
Macalester: 2
Davidson: 1
Amherst: 0
As noted above, archaeology appears under Social Sciences. Hamillton, for example, shows 5 graduates in archaeology: College Navigator - Hamilton College.