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
Susan N
VerifiedSeptember 24, 2021 • Stayed at: Mammoth site #49, Loop: B
Beautifully maintained, quiet campground. Perfect place for elk watching in the fall and close to lots of great hikes in the Northern Range.
Catherine S
VerifiedSeptember 23, 2021 • Stayed at: Mammoth site #17, Loop: A
The hosts are fantastic. The sites are big enough and not too close to each other. We needed the sun for our solar panel so I don't complain but I noticed that it's not a lot shaded. You can walk to the main Mammoth area (visitor center, stores, restaurants). But the campground is in the middle of a very busy road switchback and it's noisy.
Michael M
VerifiedSeptember 22, 2021 • Stayed at: Mammoth site #53, Loop: B
Incredible location and facilities - a must stay when camping in Yellowstone
Jody A
VerifiedSeptember 22, 2021 • Stayed at: Mammoth site #81, Loop: tent
Camp site was good but the best part was the Elk through the camp site every day and view was great from our site.
Susan V
VerifiedSeptember 21, 2021 • Stayed at: Mammoth site #15, Loop: A
Very friendly hosts, clean campground and heated, clean restrooms.
Bruce R
VerifiedSeptember 21, 2021 • Stayed at: Mammoth site #83, Loop: tent
Wish there were showers.
On a map, the campground looks close to the visitors center/hotel/store, but it actually is up a very steep trail so you'll likely drive.
Location can be windy. Stake you tent well. Lots of Elk. Restrooms are quite nice for a National Park campground.
Byron B
VerifiedSeptember 20, 2021 • Stayed at: Mammoth site #14, Loop: A
We really appreciated the flush toilets and sinks in the very clean bathrooms. Sites were great - we had 3 different - 37, 23, and 14. Even had a bull elk walk right into our site one morning for close up photos (from our vehicles, of course)! Staff (both paid and volunteer) very super helpful and friendly, even suggesting great fishing holes. Firewood sales every evening right in the park was an added bonus. Super close to Mammoth and not far from Gardiner.
Richard M
VerifiedSeptember 18, 2021 • Stayed at: Mammoth site #81, Loop: tent
Such a beautiful campground! The check in process was quick and the views are gorgeous. We would definitely camp here again.
Mario C
VerifiedSeptember 17, 2021 • Stayed at: Mammoth site #6, Loop: A
Quiet, well connected and gives you great access to Lamar Valley. It was also very clean, had the best rest rooms I have seen in a campground and the best established recycling system I have seen in USA. The only negative part is that the campground is located right between 2 roads, and very close to both of them. So it does not feel too much like nature.
Mary K
VerifiedSeptember 16, 2021 • Stayed at: Mammoth site #36, Loop: B
We had an excellent host James who made sure we had all the info we needed for a great stay. Very friendly and a wonderful asset to Yellowstone NP service. Tom and Mary
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
