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
Jim G
VerifiedSeptember 1, 2024 • Stayed at: Mammoth site #8, Loop: A
Kinda outta the way and forgotten, which is great! Eastside row is the best IMO, the further north the better. Classic NPS CG, it’s a little tight and a few more bushes to separate would be nice, but generally quiet and mellow. Excellent sunsets and the hosts this season were very gracious. Check out Slough Creek for even more isolation…
Cathy F
VerifiedAugust 31, 2024 • Stayed at: Mammoth site #64, Loop: A
The campground is neat and the hosts were great. There are elk that frequent this campground. Be sure and see the hot springs and drive through the Lamar valley either at dawn or dusk. Animal sightings will not disappoint but be sure not to approach the wild animals keep safe.
Russell S
VerifiedAugust 30, 2024 • Stayed at: Mammoth site #17, Loop: A
excellent! Too far north though.
Julie-Anne D
VerifiedAugust 30, 2024 • Stayed at: Mammoth site #17, Loop: A
Site 17 was a fairly large, flat site. Excellent, helpful campground hosts! Clean bathrooms, potable water available to fill your trailer if needed. Enjoyed our stay here—very quiet. It’s a 5 minute drive to the hot spring terraces, and about 45 minutes to Lamar Valley.
Gabriele J
VerifiedAugust 29, 2024 • Stayed at: Mammoth site #21, Loop: A
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Marie K
VerifiedAugust 29, 2024 • Stayed at: Mammoth site #57, Loop: A
We loved our stay at Mammoth Campground. We had a beautiful view of the mountains, saw a ton of elk (even with just our one night stay) and had easy access to places like Lamar Valley and Gardiner. 10/10 would stay again!
Charles B
VerifiedAugust 27, 2024 • Stayed at: Mammoth site #29, Loop: B
Love Mammoth Campground because of the open spaces and the beautiful skies. Especially quiet now that the North Entrance road has been re-routed.
Elizabeth F
VerifiedAugust 27, 2024 • Stayed at: Mammoth site #44, Loop: B
The campground gets a 5 stars! The night camphost/employee get 0 stars!
I loved the way the campsite was set up the picnic table , food storage, fire ring, and car parking was up top then you walk down a small hill to get to the tent pad, this was so nice because you did not see car lights at night. The best part about the campground was the wonderful bathrooms there was running water, flushing toilets, it was new and so clean!
The campground was quiet and peaceful during the day with elk wondering through. When checking in the employee made a point about quiet hours and that they patrol, I really liked that as we were getting up at 4 am to leave for a hike. We head down to sleep about 9pm and our neighbors are being loud but we figure at 10 they will calm down. 10 pm rolls around they keep on being loud, it is so loud I can hear them through my noise canceling headphones and my mother could hear them without her hearing aids. 10:45 rolls around another campsite screams “shut the F up!” We think that will bring the camp host or someone, nope it does not. They finally went to bed at 12:45am and never once did we hear someone come by from the campground.
Elyssa G
VerifiedAugust 20, 2024 • Stayed at: Mammoth site #70, Loop: Tent
Mammoth was a nice location on the north end of the park. It's close to the hot springs, tower area, and valley. However you will drive 1-2 hours to the other major park areas. We took a day trip to Yellowstone Hot Springs & Gardiner which was nice to take a break from driving. Also the visitor center at Mammoth has wifi.
Anne N
VerifiedAugust 20, 2024 • Stayed at: Mammoth site #64, Loop: A
The campground has a really nice location and the sunrise/sunsets were beautiful!
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
