Featured amenities
Pet Friendly
About Mammoth Campground (Yellowstone)
Number of accommodations: 81
Activities & Attractions
Nearby
Fishing
Year-round
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
Brad C
VerifiedJanuary 6, 2025 • Stayed at: Mammoth site #66, Loop: A
Great campsite! We hope to go back.
Maung Z
December 4, 2024
Scan and pay option is the best! Beautiful and quiet during the winter!
James B
VerifiedNovember 22, 2024 • Stayed at: Mammoth site #55, Loop: A
Good sites and staff. Elk invasion helped
Sherry R
November 7, 2024
We were there late October and it was quite empty. There were many first come first serve sites available. We picked a pull through site and had a beautiful view. Elk wandered by and we did end up with a mouse guest in our van but it apparently didn’t stay long! It’s wild country with lots of vegetation in the sites so the critters are out looking for warmth! Just beware. Water spigots were accessible for tank fill up. We drove out to see the Mammoth sites as it’s a really long walk from the CG.
Violet L
VerifiedNovember 5, 2024 • Stayed at: Mammoth site #34, Loop: B
As a solo female traveler, I car camped in this campground and felt very safe. It is very close to a civilized area and rangers while also being beautiful and well maintained. The restrooms are wonderful, heated and have toilet paper. There is a place to dispose of trash, storage for bear food and camp tables. It is also very close to the hot springs and lots of wonderful hikes. I loved it here and would definitely recommend to other solo travelers/ women who are looking for somewhere safe to spend the night.
Sean C
VerifiedNovember 5, 2024 • Stayed at: Mammoth site #69, Loop: Tent
The campground was clean and had lots of space for the two of us. The bathrooms are well maintained and the fact that it is running water is nice. The only downside is that it is rather far from large portions of the park and was the only camping option in late october.
William & Esther Kreider E
VerifiedNovember 2, 2024 • Stayed at: Mammoth site #61, Loop: A
Lovely drive through sites, updated restroom facilities, great views, amazing stars at night!
Christian M
VerifiedNovember 1, 2024 • Stayed at: Mammoth site #31, Loop: B
Great , excellent facilities, well labeled, super tidy and well run, but also not upright.
Grant D
VerifiedOctober 31, 2024 • Stayed at: Mammoth site #38, Loop: B
Campsite was good and nice to have a designated area for a tent, although a little pricey considering the park is entering the offseason
Mark E
VerifiedOctober 31, 2024 • Stayed at: Mammoth site #53, Loop: B
Great place, friendly helpful staff just drive in and your set.
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: July 11, 2026
