How much ham do I need per person?

1/2 pound bone-in, 1/3 boneless

The common figure is about 1/2 pound per person for bone-in ham and 1/3 pound for boneless, because you pay for the bone and nobody eats it. Guides run anywhere from 1/4 pound to 3/4 pound and up, mostly because some count one helping and others count seconds and sandwiches. If ham is the only main dish, plan toward the high end.