College campuses represent some of the best habitat for zombies. I remember seeing large numbers of them in my brief sojourn there. However, one can't simply walk onto campus with a large hunting party and start blasting away. Zombies tend to congregate in specific spots.
In the summer, they are more apt to be found in Education 101, especially in the hours immediately following lunch. However, hunting them under these conditions isn't much of a challenge, for they are more lethargic than usual.
If a fall hunt is more to your liking, wander onto campus during any home ballgame or during Hell Week. Zombies are more active during these times than during the summer, therefore "sign" is more plentiful. Look for regurgitated booze, pretzels, and discarded beer cans and togas.
Happy hunting!
Shuckins/Leggern