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
Nancy W
VerifiedJuly 29, 2024 • Stayed at: Mammoth site #66, Loop: A
The site was uneven but we managed to get our motorhome level. Maybe the description could make it known better. It was site 66 but over all the people and place was awesome. Had a very nice
Staff member stop and help us at the site. Great experience.
katie b
VerifiedJuly 29, 2024 • Stayed at: Mammoth site #60, Loop: A
we enjoyed our stay & site. camp had clean and convenient bathrooms and water spigots and nice views.
Colette Z
VerifiedJuly 26, 2024 • Stayed at: Mammoth site #67, Loop: A
We loved the mammoth campsite. Beautiful location with easy access to water and restrooms; it has a nice place for young children to walk around. There’s a nice fireplace for cooking as well so that was bonus. We had elk coming to our tent at night and during the day so that was fun too.
Kerry S
VerifiedJuly 26, 2024 • Stayed at: Mammoth site #29, Loop: B
A beautiful setting with very few mosquitoes. Staff were helpful. Toilets were clean (and they flush). Camp sites are a nice size. While the town is very close, the campground feels as though it’s in the wilderness.
Tida G
VerifiedJuly 22, 2024 • Stayed at: Mammoth site #29, Loop: B
Beautiful view and clean facility. we arrived late and could not find water faucet. As it dark. Wish it was on the map on reservation. gov. Woke up in the morning and it was very close to our campsite.
Joseph G
VerifiedJuly 19, 2024 • Stayed at: Mammoth site #85, Loop: tent
Great site near clean bathrooms with flush toilets! The tent pad was too small for our family tent, but the parking area was perfect and had more shade! The bear boxes were helpful as was the potable water. Elk bugling woke us up around 4 am and was fun to listen to. Cell service for T-Mobile was available with a bar or two in a couple of spots.
Alex N
VerifiedJuly 19, 2024 • Stayed at: Mammoth site #68, Loop: A
It’s a nice campground with plenty of restrooms. Has some recycling near the office. Rangers rove each night. We were at site 67 for 3 nights in a small camper and tent. If you have a camper I would avoid this site as it is very uneven and difficult to level your camper when you pull in as you are facing downhill. This site is also next to the road, so if you’re in a tent like I was you will hear traffic not only from other campers coming to the campground, but also employees going to housing and work.
Michele S
VerifiedJuly 18, 2024 • Stayed at: Mammoth site #85, Loop: tent
Bathrooms were great! Beautiful view! Woke up to elk on hill behind campground. Rangers were helpful and nice and gave the kids candy. Very accessible to Mammoth Hot springs and Gardner
Tammy K
VerifiedJuly 17, 2024 • Stayed at: Mammoth site #59, Loop: A
Nice campground just inside the north entrance. I had a nice campsite near a very clean bathroom and potable water source. I would stay again.
Duangkamol K
VerifiedJuly 17, 2024 • Stayed at: Mammoth site #8, Loop: A
We enjoyed our stay at Mammoth Campground last week. The host (Kristy) was very friendly and helpful. We would stay there again.
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
