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
No available sites
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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
Lawrence S
VerifiedMay 30, 2022 • Stayed at: Mammoth site #32, Loop: B
The campground hosts were so kind and knowledgeable.
amanda p
VerifiedMay 30, 2022 • Stayed at: Mammoth site #84, Loop: tent
The couple that checked us in was very friendly and helpful.
Absolute pleasure to chat with
Courtney W
VerifiedMay 30, 2022 • Stayed at: Mammoth site #85, Loop: tent
We have camped here twice and we absolutely love it. It’s very open and campsites aren’t crammed together. Very conveniently located if you are wanting to see Mammoth Springs and Lamar Valley.
Eugene C
VerifiedMay 29, 2022 • Stayed at: Mammoth site #18, Loop: A
Good
Linda E
VerifiedMay 29, 2022 • Stayed at: Mammoth site #6, Loop: A
everything was fine, I would definitely stay there again
Roland O
May 29, 2022
Beautiful place for a campground. Spot 37 had great views (of wildlife). Great hosts also.
Harold W
VerifiedMay 28, 2022 • Stayed at: Mammoth site #9, Loop: A
Nice place, very quiet. Electricity should be great.
Nicole D
VerifiedMay 24, 2022 • Stayed at: Mammoth site #60, Loop: A
Excellent as always. Clean, maintained, friendly hosts.
Azure H
VerifiedMay 22, 2022 • Stayed at: Mammoth site #53, Loop: B
Great views from all the sites, elk in campground, convenient to Mammoth Hot Springs town and road to Lamar Valley. Excellent cell signal, which was nice to have for planning travel in variable weather. Clean and well-maintained.
Dean D
VerifiedMay 22, 2022 • Stayed at: Mammoth site #59, Loop: A
The reservations to camp @ Mammoth is a joke! May I suggest when you OPEN up the Reservations do it for the entire month. That way you can choose the dates you want, instead of the dates that are only available for the 1st two weeks of the month. Moving sites are a pain!! Please revamp the way Reservations are made!! They are a mess!!
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
