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
Lindsay N
VerifiedAugust 8, 2025 • Stayed at: Mammoth site #81, Loop: tent
This campground worked out well for us after a long travel day to get into the entrance of the park and be ready to start our first day from within the park. Fewer amenities (ie showers) and smaller in overall size which had it feel a little less communal than some of the other campgrounds we stayed in but couldn’t beat it for the logistics of our travel and staff were all wonderful. Bathrooms were well located and clean.
Tarryn T
VerifiedAugust 7, 2025 • Stayed at: Mammoth site #2, Loop: A
Great spot right in Yellowstone close to hiking trails
Luca B
VerifiedAugust 6, 2025 • Stayed at: Mammoth site #32, Loop: B
Very nice spot. Probably not as wild as Indian Creek, ma nice view of the valley. Campground is clean and organized
David M
VerifiedAugust 6, 2025 • Stayed at: Mammoth site #21, Loop: A
it was great campsite, the facilities were good and well maintained. The camp hosts were very helpful and pointing out good spots to hike and find animals.
Rosemary P
VerifiedAugust 5, 2025 • Stayed at: Mammoth site #7, Loop: A
It was awesome place to camp at nearby the place to view the elks, route and the lodge at Mammoth.
Katie B
VerifiedAugust 3, 2025 • Stayed at: Mammoth site #11, Loop: A
Beautiful campsite. Saw elk on the hill. Bathrooms are decent.
BRUCE W
VerifiedJuly 31, 2025 • Stayed at: Mammoth site #39, Loop: B
Site 39 had great views and afternoon shade. The camp hosts were in the next site and super friendly. It’s possible to hike (climb) up to Mammoth from the CG. The town of Gardner is nearby, but the new road to it is not travel-trailer friendly with steep grades and hairpin turns. Be sure your trailer brakes are working.
Dianna M
VerifiedJuly 29, 2025 • Stayed at: Mammoth site #59, Loop: A
great location
Catherine V
VerifiedJuly 28, 2025 • Stayed at: Mammoth site #73, Loop: Tent
We had a great time, and enjoyed the Nothern part of the park. The campground was well maintained, and the hosts super helpfull.
Just plan for a shower at the Mammoth hotel if you stay more than 2 nights 😉
DENISE B
VerifiedJuly 28, 2025 • Stayed at: Mammoth site #67, Loop: A
The overall campground was well maintained and clean including the bathroom near our campsite. We were in site #67 which is not level and we were in a Sprinter which was not ideal but we made it work. We even had a bison visit our site when we were preparing dinner one evening!
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
