Featured amenities
Pet Friendly
About Mammoth Campground (Yellowstone)
Number of accommodations: 81
Nearby Activities & Attractions
Fishing
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Pet friendly
Pets and Policies
- Pet friendly
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Rates, Sites & Availability
81 Sites Available
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Site Details
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81 Sites Available
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Reviews (560)
What Guests Are Saying
Mammoth Campground is praised for its beautiful scenery, convenient location near Lamar Valley, and friendly hosts who maintain a clean environment. Many campers enjoyed the spacious and accessible sites, as well as the wildlife sightings, particularly elk and bison. However, some visitors noted that only one bathroom was open during their stay, leading to inconvenience, and there were occasional issues with campsite reservations. Overall, it's considered a great spot for exploring Yellowstone, especially in the off-season.
What Guests Are Saying
Mammoth Campground is praised for its beautiful scenery, convenient location near Lamar Valley, and friendly hosts who maintain a clean environment. Many campers enjoyed the spacious and accessible sites, as well as the wildlife sightings, particularly elk and bison. However, some visitors noted that only one bathroom was open during their stay, leading to inconvenience, and there were occasional issues with campsite reservations. Overall, it's considered a great spot for exploring Yellowstone, especially in the off-season.
Review Summary
Michael M
VerifiedNovember 11, 2025 • Stayed at: Mammoth site #7, Loop: A
Spacious site; good price; close to many features; friendly host; elk in campground
Linda B
VerifiedNovember 1, 2025 • Stayed at: Mammoth site #25, Loop: A
It was our first time to this campground. We thought the whole camp ground was clean. The hosts worked hard to help campers and were the right amount of friendly without intruding into our time at the camp. It is located in a great spot to reach the center easily without having to use our vehicle. We loved the wildlife that walked through the camp. We would stay at this camp again.
Robert H
VerifiedOctober 30, 2025 • Stayed at: Mammoth site #84, Loop: tent
Basic sites, great environment, had elk walk through in the morning. Happy to have flushing toilets and showers available at the mammoth lodge. Great place to stay when visiting Yellowstone.
Sven B
October 29, 2025
The campground was open despite the shutdown. The staff was very friendly and helpful. We really appreciate that, despite the difficult circumstances, the employees are doing their best to show visitors this uniquely beautiful park.
Unfortunately, on two occasions, other people were parked in our reserved campsite with their vehicles. Once, the rangers asked the people who were parked in the wrong place to leave, and once we had to ask the other people to leave the site, which led to a 15-minute discussion. Unfortunately, only one toilet facility was open, which is a bit tight with around 40 campsites, and there was no permanently installed washing-up station.
The atmosphere was very peaceful, the campsite was very clean, and the other campers were also very friendly.
Dee S
October 28, 2025
We had the most amazing time camping in Mammoth. We went mid October and the weather and scenery were absolutely stunning. We wanted time to decompress and just be in Gods complete beauty. We were not once disappointed.
Brent N
October 28, 2025
Rangers at the campground were very helpful and good to deal with. Our camping experience there was exceptionally good.
Sasha M
October 28, 2025
Very easy process, we got to the campground around 1pm and still had a handful of sites to choose from, and it was full by the time we came back for the night. It was very clean and quiet, although I didn’t realize the bathrooms would be closed.
Nicki M
October 27, 2025
Unable to reserve my spot on recreation.gov (had to be there early am for 1st come 1st serve). Drove 7 hours to get there 1st night and it was full w no host after 7 or 8pm. Very tired had to drive another 2 hours through yellowstone to Cooke City to sleep in a very cold car because you can't sleep in the car in a national park. Very unhappy. Mammoth is busy enough to need to use reserve system through the fall. No service in the park, have to go back into reserve system to a pending reservation. With that in mind it needs to be on reserve system year round.
Ruth A
VerifiedOctober 24, 2025 • Stayed at: Mammoth site #42, Loop: B
Beautiful campsites. Friendly people
Stephanie H
VerifiedOctober 24, 2025 • Stayed at: Mammoth site #13, Loop: A
Great campground, clean toilets and close to the hotel where you can purchase a shower on their site. Showers were clean and had good pressure with nice hot water. Had one day of sun, one day of rain and our last day had snow! Highly recommend early to mid October at the end of season to visit as much less crowds.
Location Mammoth Campground (Yellowstone)
Address:
Yellowstone National Park
Yellowstone, WY, 82190
United States
Latitude & Longitude: 44.9736 / -110.693
Elevation: 1842 feet
Policies & Rules
General
- Mammoth Campground is managed by the park. If you are looking for campgrounds managed by Yellowstone National Park Lodges (Fishing Bridge RV Park, Bridge Bay, Canyon, Madison, and Grant Village campgrounds), please visit the Yellowstone National Park Lodges Camping website.
- RV or Camper Unit Delivery Prohibited. The delivery or pick-up of out-of-park RVs or other camper unit rentals is prohibited.
- Notify the Campground of Late Arrivals. To notify campground of late arrival or cancellation please call 307-344-2289
- Parking. All wheeled vehicles including trailers and motorcycles must be parked on parking pads or established roadways, so as not to block or restrict traffic in campgrounds.
- Camping Occupancy Limits. Maximum occupancy is six people per site. Camp only in designated sites. Camping is limited to 14 days from July 1 through Labor Day and to 30 days the rest of the year parkwide. The 44 day camping limit includes both concession- and park-operated campgrounds.
- Wildlife/Bear Regulations. ~Keep all food and related items - beverages, cooking utensils, stoves, pet food and, empty or full, food and beverage containers such as coolers, ice chests, and water jugs - locked inside your vehicle or stored in a food storage box, unless in immediate use. Bear resistant food containers must be kept in a vehicle, in a hard-sided camping unit, or in a food storage box. ~All trash and garbage must be disposed of in the provided bear-proof trash cans. Do not leave food related trash or garbage unattended. ~Washing dishes or clothing at campground hydrants or spigots is prohibited. Carry all dishwater/wastewater to the restroom toilet for disposal.
- Campfires and Firewood. Wood and charcoal fires are permitted. Campfires are permitted only in established fire grates. Fires must be attended at all times. Only dead, down, and detached wood may be gathered. Wood should not extend outside the fire grate perimeter. Do not break limbs off of standing trees, living or dead. Drown campfires thoroughly with water to make sure they are completely out. NOTE: Wood and charcoal fires may be subject to special restrictions due to fire danger. Restrictions will be listed on campground information boards and on the park's Current Conditions page. Propane grills and stoves are not usually affected by fire restrictions.
- Quiet hours are strictly enforced. No loud audio devices or other noise disturbances will be allowed during this time. Generators are prohibited between the hours of 8:00 p.m. and 8:00 a.m. Generators must be turned off durng the day when campsite is not occupied by site renter.
- Stay on Boardwalks and Trails. All travel in thermal areas is restricted to NPS designated trails and boardwalks.
- Fishing. To fish within the park, people 16 years of age and older are required to purchase and carry on their person a Yellowstone National Park Fishing Permit (you may purchase in advance). To learn more about fishing regulations, visit the park's Catch a Fish web page.
- 30 ft RV limit. From November through April.
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Last updated: June 4, 2026
