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
Charles S
VerifiedJune 10, 2021 • Stayed at: Mammoth site #53, Loop: B
It is a wonderful campground, and a good place for staging your visit to YNP. The restroom facilities were appreciated, as they had regular toilets instead of vault toilets. The only amenity was potable water, and that was appreciated. The construction trucks are very loud, and could better serve the campground guests if they didn't use jake brakes, and did not operate during the quiet hours the campground has to abide by.
Jing L
VerifiedJune 9, 2021 • Stayed at: Mammoth site #74, Loop: Tent
I enjoyed my stay at the campground very much! My only complaint is the faucet in the Women's Restroom at Site 74. It splashed a lot everywhere and was a big pain to use.
Bob L
VerifiedJune 8, 2021 • Stayed at: Mammoth site #50, Loop: B
Clean peaceful plenty of room at most sites
Buffaloes and elk wander through quite often
Dylan J
VerifiedJune 7, 2021 • Stayed at: Mammoth site #46, Loop: B
I really love this campsite. Nice landscape surrounding with quick access to the Terrances and hiking! This is my 2nd time camping at this campground. I will say that you can sometimes hear cars driving but it was not a problem for us. Also not for showering you will want to help back into town or to the south end of the park as there are no showers here.
Jamie D
VerifiedJune 6, 2021 • Stayed at: Mammoth site #8, Loop: A
Clean, easy access. Loud along the road.
Judee B
VerifiedJune 5, 2021 • Stayed at: Mammoth site #83, Loop: tent
Absolutely stunning, and late May was the perfect time to be there.
Laurie S
VerifiedJune 5, 2021 • Stayed at: Mammoth site #22, Loop: A
Nice campground, kept clean and heated bathrooms
Jose C
VerifiedJune 5, 2021 • Stayed at: Mammoth site #17, Loop: A
Fantastic host/volunteers. Bathrooms and facilities were well kept and very clean.
Please go back to first come first serve basis rather than advance reservations. We saw that a lot of sites were no-shows (or cut their reservations short) during our stay.
If absolutely necessary, reservations should be made by campsite type, rather than specific sites. This, coming from someone with a background in reservations. We spent a lot of time checking in and checking out of three (yes, three) different sites during our short six night stay when we could've been out and about exploring.
The reservations, both here and in Grand Teton, put enormous time constraints on our trip. In the past, we've had the opportunity to travel more organically, with an open and flexible schedule. This is especially important when it comes to things like avoiding crowds and inclement weather.
Susan R
VerifiedJune 4, 2021 • Stayed at: Mammoth site #67, Loop: A
Happy to be able to stay here, as we got a last minute reservation due to a cancellation. Would recommend posting late arrival info at the entrance, as we didn’t know if we needed to pick up info like at Madison, and spent time looking. The view was lovely and it was great to be close to the Lamar Valley.
Harold N
VerifiedJune 2, 2021 • Stayed at: Mammoth site #71, Loop: Tent
One of if not then the best campground in the park.
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
