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
David E
VerifiedOctober 20, 2021 • Stayed at: Mammoth site #40, Loop: B
It would be great if wood was available for sale in the campground. Attendants and camp hosts all said wood was only available in town.
Otherwise it was a fun adventure, well probably do it again in the future.
Charles B
VerifiedOctober 20, 2021 • Stayed at: Mammoth site #31, Loop: B
Great campground, great staff.
Mike B
VerifiedOctober 19, 2021 • Stayed at: Mammoth site #13, Loop: A
Mammoth is conveniently located and has all the amenities you could ask for: clean facilities, friendly staff, and well equipped sites. This is a good place to stay for visiting the west side of the park.
Bridget K
VerifiedOctober 19, 2021 • Stayed at: Mammoth site #14, Loop: A
Very nice check in, clear instructions from ranger, clean warm bathroom, nice layout of campground, thank u!
Amy R
VerifiedOctober 18, 2021 • Stayed at: Mammoth site #54, Loop: A
Nice clean restrooms. Paved loop. Generators annoying. Allowed 8am to 8pm. Easy location with large sites.
Virginia M
VerifiedOctober 16, 2021 • Stayed at: Mammoth site #34, Loop: B
It is a very large campground, with spaces close together. It was suitable for a one-night stay in the park, but I would have preferred one of the primitive campgrounds. Those were all closed for the season.
Pamela N
VerifiedOctober 16, 2021 • Stayed at: Mammoth site #20, Loop: A
We were in site 20A in Mammoth campground, which is very close to the main road. The traffic noise was terrible. Huge noisy asphalt trucks we’re going up and down the road all day starting about 5:30 in the morning and continuing until late afternoon and sometimes into the evening for road construction. These sites which are so close to the road should be closed. Don’t reserve any sites below number 35 A. This was a very unpleasant experience compared to our prior stays at this campground.
Athena F
VerifiedOctober 16, 2021 • Stayed at: Mammoth site #70, Loop: Tent
Maintained facility with Friendly campsite host. very well organized Campsite With high usage.
Jack C
VerifiedOctober 16, 2021 • Stayed at: Mammoth site #73, Loop: Tent
It was a great location close to Gardiner and Mammoth Hot Springs. We especially liked the tent pads made setting our family size tent a breeze. The campground is a great hub to venture out into Yellowstone. Overall we enjoyed our visit and hope to come back again.
Gregory H
VerifiedOctober 15, 2021 • Stayed at: Mammoth site #46, Loop: B
Great organization at the campground and great staff. Location is ideal for the north Yellowstone base camp.
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
