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
Linda K
VerifiedMay 15, 2022 • Stayed at: Mammoth site #35, Loop: B
Campsites are nicely spaced and not on top of each other
Maria O
VerifiedMay 15, 2022 • Stayed at: Mammoth site #44, Loop: B
Beautiful campground and location. Campground hosts and staff fantastic.
So much to see and do in the area.
Samantha S
VerifiedMay 13, 2022 • Stayed at: Mammoth site #72, Loop: Tent
The bathrooms were cleaner than many other campgrounds I have been to.
Heidi M
VerifiedMay 12, 2022 • Stayed at: Mammoth site #62, Loop: A
Great location for the north area.
Bill H
VerifiedMay 12, 2022 • Stayed at: Mammoth site #10, Loop: A
We love Mammoth Campground, YNP, because of the nearly always present elk, bison, and mule deer in the campground, the clean and warm restrooms, the friendly campground hosts and staff, and the proximity to daytrip destinations within YNP.
Helen R
VerifiedMay 12, 2022 • Stayed at: Mammoth site #7, Loop: A
Yellowstone is a gem. We thoroughly enjoyed our 3 day visit. The campground was very comfortable and we loved the wildlife wondering around.
Jean T
VerifiedMay 12, 2022 • Stayed at: Mammoth site #74, Loop: Tent
Stayed 4 nights at Mammoth this year 2022. Rained a few times but the tent site sat on a gravel bed with an awesome view. There was a bear box to store food, water jug, stove. There are numerous water spigots in the campground and decent bathrooms, but no showers. The CG hosts routinely drive by in their golf carts checking on guests. One day about 11 am a herd of buffalo started to approach the CG, could hear them snorting when a few hundred feet away, and though I was present making noise, they were unfazed and finally I got in my car for 20 minutes till the buffs passed. Mammoth CG is located a short distance from the hotel and visitor center. A trail allows people to walk between the CG and main visitor area. Nearby is a trailhead to the Beaver Ponds..a 4 miles RT hike or 5 mile loop..where dozens of elk bed down. One of my favorite stops is the Map Room of the Mammoth Hotel where I can sit and read, have a cocktail from the bar and a piano player starts about 5 PM. Fortunately or unfortunately, internet and cell service is sketchy at best. Need to drive 5 miles to Gardiner, out of the Park, if service is needed.
DENNIS L
VerifiedMay 11, 2022 • Stayed at: Mammoth site #23, Loop: A
Upon arrival Ranger Tonya was able to assist us with getting a site and the Hist Volunteers are the best. We stayed a total of six nights at three different sites and all were excellent. Late April is
A great time to visit as all the animals were out.
Jeri C
VerifiedMay 10, 2022 • Stayed at: Mammoth site #51, Loop: B
The check in process was easy. The camp hosts were professional, friendly, and helpful. They went out of their way to answer any questions. Very good experience.
Tauni H
VerifiedMay 10, 2022 • Stayed at: Mammoth site #5, Loop: A
Will never stay here 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 13, 2026
