A United States Post Office is located behind the Caver's Camp Store near the Mammoth Cave Campground. (270)758-2311.
The postal code for Mammoth Cave is 42259.
Post Office Hours:
Did You Know?
Native Americans of the Early Woodland period gathered minerals from Mammoth Cave between 2,000 and 4,000 years ago ... no one knows why. Objects they left behind – slippers, cane torches, gourds, and mussel shells – remain perfectly preserved in the cave.