ozstamps: The Airport Post Office is located at Bldg. 660 West Field Road. Hours are 6 a.m. to midnight every day. Telephone +1 650-808-1404.
You can take the free
AirTrain as though you were heading to the Rental Car Center, but disembark one stop early at West Field Road. Take the escalator down, and continue walking forward about two blocks. The Post Office will be on your left.
I'll probably be around on Dec. 21. Jan.9 is the last day of
Macworld, so I have other plans.