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
Laura R
VerifiedJuly 7, 2025 • Stayed at: Mammoth site #17, Loop: A
Site was big enough, level, and private enough. Water readily available. Bathrooms clean with water and flush toilets.
Victoria W
VerifiedJuly 7, 2025 • Stayed at: Mammoth site #71, Loop: Tent
Check-in was easy, hosts were kind and helpful, bathrooms were clean. My site was exposed to the sun all day so I'm glad I brought a canopy for shade and for an afternoon thunderstorm we experienced one day. The sites were very close together so expect togetherness. I found that not all campers followed the rules as some people left their stoves out when camping in bear country and we were told to store ours in the bear box. The site next to us had 5 (yes, five!) tents on it but they were quiet for the most part. The restroom access for this site was a short, steep, uphill hike from the site or a more level walk but further away restroom. While every other site had an in-ground fire pit the one at my site looked recently replaced and above ground throwing less heat but it was warm on my visit so I didn't mind. Keep in mind Mammoth Campground is about 10 degrees or so warmer than the rest of the park. Additionally, since Mammoth is so far north in the park, it takes about 90 minutes to get anywhere else in the park.
Laurie G
VerifiedJuly 4, 2025 • Stayed at: Mammoth site #61, Loop: A
Overall experience was positive but was upset that when my kid got sick the volunteers in the rangers station couldn’t tell me where to get services. It was not a 911 emergency so I was out of luck. My kid had a migraine but I wanted to make sure it wasn’t something more serious. Finally the volunteers googled (which I couldn’t do because NO CELL SERVICE for camper but obviously the volunteers had internet access) where to go and I was told the nearest emergency room was in Lincoln. There should be an Urgent care that is staffed until at least 11Pm. The clinic in Mammoth closed at 5Pm.
Wilmer P
VerifiedJuly 4, 2025 • Stayed at: Mammoth site #4, Loop: A
Excellent experience
Chuck K
VerifiedJuly 4, 2025 • Stayed at: Mammoth site #13, Loop: A
Mammoth campground is a convenient location to get an early start in the morning searching for wildlife.
Lisa V
VerifiedJuly 3, 2025 • Stayed at: Mammoth site #43, Loop: B
Nice host, quiet site
Woua L
VerifiedJuly 2, 2025 • Stayed at: Mammoth site #63, Loop: A
This spot said you can tent. While you technically can tent, it’s all gravel.
Do not stay on this spot if you planning to use a tent.
Amy E
VerifiedJuly 2, 2025 • Stayed at: Mammoth site #60, Loop: A
Had a very nice w experience with the campground. It was well maintained and the staff was friendly and helpful.
Michael G
VerifiedJuly 1, 2025 • Stayed at: Mammoth site #60, Loop: A
Nice site. We enjoyed the campground and location for exploring the north side of yellowstone. Flush toilets were good, and site was great for fitting our travel trailer (28ft long).
Caroline K
VerifiedJuly 1, 2025 • Stayed at: Mammoth site #18, Loop: A
Beautiful campground with amazing views. Very well maintained and clean. The host stopped by to check on us at one point. Conveniently located next to park entrance and Mammoth hotel. Appreciated the on-site bear box, fire pit, and picnic table.
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
