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
Lori K
VerifiedJune 21, 2022 • Stayed at: Mammoth site #74, Loop: Tent
It was kind of exciting as it flooded an had to leave early. I have been coming for over 6 years and have never witnesses anything like that before. In addition got to see a grizzly make a kill at mammoth campground. We had to stay in our vehicles as the bear was dragging around his kill before he was scared off. It was amazing to see nature up close. And even though the floods caused YS to close down it was amazing to see the power of nature. It will be interesting to see the changes that will be made in the coming years to the north section roads.
Debra D
VerifiedJune 21, 2022 • Stayed at: Mammoth site #4, Loop: A
Had to be evacuated
Janet B
VerifiedJune 18, 2022 • Stayed at: Mammoth site #12, Loop: A
The campground was really nice with pull through camping. Bathrooms were very clean and nice. Would love it if they had showers. Camp hosts were very cordial and knowledgeable. We spent all our days out in Lamar Valley watching wildlife. Good spot to base out of.
Alision N
VerifiedJune 18, 2022 • Stayed at: Mammoth site #50, Loop: B
We loved the ruggedness of the campground and the bathrooms were very nice. However, the tent spot was very small and our tent did not get well.
Sandra K
VerifiedJune 18, 2022 • Stayed at: Mammoth site #21, Loop: A
Great location — loved the smallness of the campground— camphosts were excellent!
Jessica B
VerifiedJune 17, 2022 • Stayed at: Mammoth site #64, Loop: A
Amazing experience staff was so nice and helpful. Im also thankful I was able to enjoy just prior to the disaster of the rain storm.
Katherine H
VerifiedJune 16, 2022 • Stayed at: Mammoth site #75, Loop: Tent
Clean, comfortable, quiet, with really awesome camp hosts. I woke up before first light to reach the Lamar Valley- managed to see wolves AND grizzlies!
Jolie K
VerifiedJune 16, 2022 • Stayed at: Mammoth site #50, Loop: B
We had a great time! And given the current situation in Yellowstone NP, we feel very fortunate to have had the time there that we did. Campground was as we expected and the campground hosts were friendly & helpful.
STEVE F
VerifiedJune 10, 2022 • Stayed at: Mammoth site #24, Loop: A
Seeing the Elk. Camp ground was great.
Would be good to have somewhere in the complex where you could do laundry.
Lisa C
VerifiedJune 10, 2022 • Stayed at: Mammoth site #49, Loop: B
I can't say enough good things about this campground. The wonderful man who checked us in was so sweet and informative. The hosts were friendly and visible checking out the campground every day. Our site was absolutely amazing! Clean and in the best spot! We had elk visiting every morning to graze. The convenience to Mammoth Hot Springs and the Lamar Valley was an added bonus. Best campground we stayed in while in Yellowstone!
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 13, 2026
