Come see all we have done in our first 2 years. Many upgrades, including a 24-hr laundry, 2 huge dog parks, a dog wash and a mining sluice.
We have an after-hours, night registration box.
Office # (406) 665-1635.
Office hours 8 am to 8 pm MST
After hours # 971-322-3239
The Hardin KOA is halfway between Yellowstone National Park and Mt. Rushmore. Come and stay with us and enjoy all that our area has to offer. You'll be glad you did!
Jon & Kristy Mastin
We currently offer the following activities:
To receive a refund of a deposit (less a $20 administrative cancellation fee), guests must call the campground before the following deadlines. Please note that text and email notifications are not accepted for cancellations.
RV & Tent Sites: 7 days cancellation notice is required. Guests must call by 4 p.m. seven days before their scheduled arrival.
Lodging & Accommodations: 14 days cancellation notice is required. Guests must call by 4 p.m. fourteen days before their scheduled arrival.California Exception: For guests booking accommodations in California, a full refund is given for reservations canceled within 24 hours of booking, provided the arrival date is at least 72 hours after the time of booking.
Late Cancellations: Reservations canceled after these deadlines will result in the forfeiture of the full deposit.
General Rules: No refunds are given for "discomforts of nature," no-shows, or early checkouts. Additionally, no refunds are provided on or after the arrival date.