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Internet reservations are currently not available for this KOA: Yellowstone Park / Mountainside KOA Journey

Please call the campground directly to make your reservations at 1-800-562-5640. Thank you.

Jun 25, 2023
The cabin we stayed in was clean and comfortable. There were minor issues with the cabin. We told the KOA employees, they wrote them down as we left and believe they will address and fix them.
Jun 23, 2023
Nice place nice people cabin was clean cozy and nice only complaint was for the price a night it could have had a tv after a long day at Yellowstone was too cold to sit outside would have been nice to layback relax and watch tv ! Even the 1 room no bathroom cabins at all KOA’s have tv’s
Jun 21, 2023
Jun 18, 2023
Jun 14, 2023
Loved your campground and cabin 8 that we stayed in. No suggestions for improvement there, but our family that stayed in a camper spot could have had a nicer area. Grass could have been cut and a cement pad would have been nice. Also, they didn’t have a swing or table & chairs as other spots did.
May 30, 2023
Customer service was good, just had a problem with our room key card not working for the first 1/2hr that we got there. They did give us a bundle of firewood for the inconvience.
May 28, 2023
May 27, 2023
Absolutely wonderful location and staffing. Deluxe cabin was just that- deluxe! Great accommodations and west yellowstone was a great little town with short drive into the park. Would highly recommend and would stay again.
Oct 04, 2022
Oct 04, 2022
Oct 03, 2022
Excellent service from check in to check out. Cabin had everything we needed for our stay. This was our second stay here and we will definitely be back.
Oct 01, 2022
We absolutely loved your campground. Beautiful facility. Drove from California in June and arrived the day the park flooded. While not what we planned, we chose to stay and had a great time…..so much so that we returned at the end of September for another stay. Perfect spot to end a day!!!
Sep 28, 2022
I arrived later than I wanted, after sunset, and they had security go by the cabin and turn on the lights and heater before I arrived. So thoughtful!
Sep 28, 2022
GREAT!!! Absolutely beautiful camp ground. All the workers were very friendly ����
Sep 26, 2022
They are so friendly and funny
Sep 25, 2022
We love it at the price a little high
Sep 22, 2022
KOA Mountainside was great about our need to make changes to reservations. It also met our housing needs. My only concern was the kitchen supplies, very inadequate and unorganized. When I called for reservations I asked about what kitchen items to take. I was told a good knife, that's all. There was definitely an understatement.
Sep 21, 2022
Deluxe cabin for three nights, was fabulous, upgraded from the camping cabin, well worth it!
Sep 19, 2022
Our stay was pleasant, the cabin very clean.
Sep 18, 2022
Friendly and helpful staff, clean cabin and very nice campground setting. Greatly enjoyed our week.
Sep 15, 2022
Superb hospitality
Sep 11, 2022
Sep 10, 2022
We enjoyed our stay very much. Thank you for everything. You were so helpful when my husband had his heart attack. He is doing fine after having a stint put in. You helped to make a very scary time easier to handle. Thank you so very much.
Sep 09, 2022
Awesome place friendly and helpful people and very well kept facilities! Quiet and well equipped! Great people and so nice. If we needed any help or supplies they were there immediately. Thank you for making our stay even better
Sep 08, 2022
Sep 07, 2022
The stay was great. Just be careful how strong a cleaner you are using. Our room had a very strong smell of pinesol . Had to open the windows in the heat of the day so it wouldn't burn our noses.
Sep 06, 2022
Cabin and grounds were very clean, staff were very friendly and helpful, but the mattress on the double bed was completely worn out.
Sep 06, 2022
We love this campground and the cabin accommodations. The surrounding area is so beautiful and the stream nearby provides a lovely sound to increase relaxation in the outdoors. The staff is so kind and helpful and the place is kept incredibly clean and well maintained. We have been to your campground numerous times and plan to return in the future. Thank you for a wonderful stay.
Sep 06, 2022
Sep 02, 2022
We loved cabin #2! So comfy and a lovely alternative to tent camping.
Sep 02, 2022
Proximity to Yellowstone is great. Amenities compared to other KOA locations on our trip are very weak. Cabin was decent but floors were filthy. Customer service was very good.
Sep 02, 2022
Everything was great with 2 exceptions, first the pots and pans were dirty upon our arrival and secondly the bed frame was broken. Otherwise, fantastic!
Sep 01, 2022
Everything was fantastic! They delivered our pizza. Our cabin was great! And we loved walking to the creek for the sunrise. The people at the front desk were so nice and helpful!
Aug 28, 2022
Friendly and courteous staff.
Aug 24, 2022
Aug 23, 2022
We had a great family time. Having a cabin with a fire pit, table, etc. was very special. The only thing I would mention is a noisy sliding bathroom door. Made it hard during the night when family is sleeping close by. � We had a wonderful time.
Aug 21, 2022
So much fun. Very friendly staff.
Aug 21, 2022
Loved the customer service! The pizza is excellent! Lodge we rented was clean. Thank you Yellowstone KOA!
Aug 15, 2022
Cabin was fantastic and we truly enjoyed our time, wish there was some info for checking out of cabins- went to turn keys in only to find the store closed- should have a key drop or something.
Aug 14, 2022
Nice property with creek and ponds. We enjoyed cabin C8 for two evenings. Friendly employees too.
Aug 13, 2022
Aug 11, 2022
We did a three full days stay. Staff of the KOA was super open and friendly. Excellent day trips recommendations to the Yellowstone Park, for newcomers like us, have been given. All what we have expected was fulfilled.
Aug 10, 2022
We enjoyed the peace and quiet. Our cabin was very clean. Enjoyed it very much. Limited wifi as mentioned in other reviews, and not the amenities of the Holiday up the road. But for us, exactly what we wanted.
Aug 06, 2022
Nice place to stay
Aug 03, 2022
Great except 2 things. Hot water is gone very quickly in the cabin. we had 4 people needing showers. The Wi-Fi could be better since it apparently doesn’t work with Apple. Oddest thing I ever heard. Cabin was clean and spacious. People were very friendly. Pizza was great
Aug 02, 2022
Five adults in a cabin. Much better than a hotel. Showers were great. We cooked most of our meals in the cabin and made s'mores over the bonfire.
Jul 31, 2022
We came over on our way to Idaho falls and stayed two nights and had a great time. Always so friendly and clean.
Jul 27, 2022
Jul 25, 2022
The cabin we stayed in was clean, and all was fine . However the 1st cabin we were given was already occupied.Woops!
Jul 23, 2022
We stayed 4 nights and had a wonderful time. Everything in our cabin was clean. The amenities were perfect with picnic tables, firepits and friendly, helpful and patient staff. Thank you, Mountainside KOA
Mar 18, 2024
Great place to camp and we also hit the pool and enjoyed having showers to use. Great for all the hiking and walking after Grand Tetons or Yellowstone.
- Maximus D. Meridius on Google
Sep 26, 2023
Campground so it is bring your own room. 😀😃 We'll organized, several nice extras! Resrooms/showers extraordinary.
- Ken Luke on Google
Sep 16, 2023
Everything about this place was wonderful. The staff, the beautiful view, and the wildlife in the area. Definitely a great park to stay at the park...
- Minnie Daczewitz on Google