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
Mary K
VerifiedAugust 19, 2025 • Stayed at: Mammoth site #2, Loop: A
nice spot to camp to vist the upper part of Yellowstone. Good access to bathrooms and water
Diane K
VerifiedAugust 18, 2025 • Stayed at: Mammoth site #42, Loop: B
Nice location
Peter F
VerifiedAugust 18, 2025 • Stayed at: Mammoth site #49, Loop: B
great location
Jane I
VerifiedAugust 16, 2025 • Stayed at: Mammoth site #63, Loop: A
Mammoth CG is our favorite campground in Yellowstone NP. It is quiet and smaller; less busy than the other campgrounds in the Park. Also, the reservation system for Mammoth CG (recreation.gov) is much better than the system used to reserve a spot at the other campgrounds in Yellowstone NP. We really like the ability to reserve an actual site of our choice 6 months ahead, or 2 weeks ahead. Very convenient. The hosts at Mammoth CG were friendly and available if needed. Restrooms were clean and spaced nicely throughout the campground. Beautiful views from many of the sites in the campground.
James A
VerifiedAugust 14, 2025 • Stayed at: Mammoth site #42, Loop: B
Stayed in Site 42, B and it was wonderful. The camp hosts across the way were super nice and available if we needed anything (James & Cindy... oddly we are also 'James and Cindy'.. lol).
This was a jumping off point for several areas of Yellowstone - went to Lamar Valley, Roosevelt Lodge for breakfast, Gardiner to go to church on Sunday, down to Grand Prismatic and all points in between... Roaring Mountain is pretty freaking cool.
We had 4 nights here and spent every day exploring this area of the park. Super location.
Oh.. showers at the Mammoth Hotel cabins were not great... I was a bit surprised and felt like they were kind of gross. Go into Gardiner where the laundry place is.. they have showers that are private, spacious, and very clean.
Dale C
VerifiedAugust 13, 2025 • Stayed at: Mammoth site #30, Loop: B
We enjoyed camping at Mammoth Hot Springs as we explored this part of the park.
Connie A
VerifiedAugust 10, 2025 • Stayed at: Mammoth site #2, Loop: A
Friendly Camp Host. Very friendly.
Sergio M
VerifiedAugust 10, 2025 • Stayed at: Mammoth site #35, Loop: B
Bathrooms were excellent. Very spacious campground with individual food storage lockers. Running water was widely available.
John M
VerifiedAugust 9, 2025 • Stayed at: Mammoth site #29, Loop: B
Seemed so far away from the mammoth tourists. We loved it
Lindsay N
VerifiedAugust 8, 2025 • Stayed at: Mammoth site #74, Loop: Tent
Staff were friendly and helpful. Location is super convenient for those traveling through the north entrance like we were. Bathrooms were clean and well positioned relative to our sites. Easy to get in and out. Fewer amenities than other campgrounds we stayed in the park, this is a smaller campground.
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
