There are Post Offices at the following locations:
Mammoth Hot Springs - Open year-around excluding holidays from 8:30 a.m. to 5:00 p.m. weekdays. Closed Saturday and Sunday.
Old Faithful - Open from early-May to late-October
Grant Village - Open from mid-May to mid-September
Lake Village - Open from mid-May to mid-October
Canyon Village - Open from late-May to mid-September
Did You Know?
There were no wolves in Yellowstone in 1994. The wolves that were reintroduced in 1995 and 1996 thrived and there are now over 300 of their descendents living in the Greater Yellowstone Area.