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
Rod M
VerifiedOctober 4, 2021 • Stayed at: Mammoth site #29, Loop: B
Got lucky with a last minute cancellation from someone. Had a wonderful view of elk on the hillside across from our campsite.
Vanessa B
VerifiedOctober 4, 2021 • Stayed at: Mammoth site #55, Loop: A
The campground is tucked in an S curve of the road, so you hear traffic pretty early and pretty late. We had 2 rather unlevel sites, but we adjusted okay. Just being in the park is wonderful and we had elk bulls bugling right through the campground on numerous occasions. Nice ranger/ employees as well.
Steven H
VerifiedOctober 2, 2021 • Stayed at: Mammoth site #68, Loop: A
Very nice campground. Great location. Facilities were very clean. Would definitely stay here again.
Linda.saunders8064@gmail.com S
VerifiedOctober 1, 2021 • Stayed at: Mammoth site #2, Loop: A
We had site 2. Right across from the check in station. While it was separated from the campground road by some bushes, the vehicle engine noise and diesel fumes weren’t pleasant. Our site, and the other motorhome sites there that I saw, were not oriented so you could step out your door and use your picnic table and fire pit. Campground volunteers and rangers were very friendly and helpful. Not sure if I would stay here again.
Shaun F
VerifiedSeptember 30, 2021 • Stayed at: Mammoth site #80, Loop: tent
We only stayed 1 night here (and it was our only stay *in* any of the 3 national parks we visited) and my kids loved it! They loved seeing animals in the campground and the bathrooms were clean. We'd stay here again.
Matt C
VerifiedSeptember 27, 2021 • Stayed at: Mammoth site #27, Loop: B
Elk were common around the campground - very cool. Facilities were some of the nicer ones I have experienced at national parks. Sites were large and comfortable. If you are sleeping in a tent, you will most likely need to use rocks to secure it as the ground is quite hard!
William F
VerifiedSeptember 27, 2021 • Stayed at: Mammoth site #8, Loop: A
Nice facility, wildlife abundant, the volunteers/hosts and rangers were very helpful.
Patrick G
VerifiedSeptember 27, 2021 • Stayed at: Mammoth site #48, Loop: B
Highly recommend it. Mammoth campground was our favorite one at Yellowstone.
The elk were very close .
Sara F
VerifiedSeptember 24, 2021 • Stayed at: Mammoth site #49, Loop: B
Yellowstone in the fall is like nothing else. Where else would you have a bull elk bugling through your camp at 1:30 in the morning?
Sheri P
VerifiedSeptember 24, 2021 • Stayed at: Mammoth site #71, Loop: Tent
Great campsite and the ranger onsite was very helpful. Loved the wildlife and ability to hike to town. Town with store, gas and a few restaurants and gift shops. The Elk in town were a fabulous site! Also close hike to the "Hot Springs". Great trails!
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
