Stumbled across these two covers. Found a third one but don't have it yet.

University of Virginia's Postal Code is 22904. Even though Leap year in 2004 fell on a Sunday, the postmaster made these. Now I have to do more research because 22920 is a valid zip in this area so it will be coming up in a few years. Might have to look that Post Office up and make friends with the postmaster. After all, it's only three years away.