• An aerial view of Old Faithful erupting taken from Observation Point with the Old Faithful Inn to the side.


    National Park ID,MT,WY

Post Offices

There are Post Offices at the following locations:

  • Mammoth Hot Springs - Open year-around from 8:30 a.m. to 5:00 p.m. weekdays, excluding holidays. 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?

Upper Geyser Basin Hydrothermal Features on a Winter Day.

Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.