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
YAFANG H
VerifiedJune 1, 2025 • Stayed at: Mammoth site #17, Loop: A
Great stay. Near the visitor center. Clean and quiet.
Mike T
VerifiedMay 31, 2025 • Stayed at: Mammoth site #26, Loop: B
Camp Host and site were excellent
Gary T
VerifiedMay 30, 2025 • Stayed at: Mammoth site #50, Loop: B
Thank you. Only wish the Elk were in the campgrounds. I know it would not have safe for us being that they were calving.
Duane H
VerifiedMay 28, 2025 • Stayed at: Mammoth site #73, Loop: Tent
Was lucky to get a site that day. Lots of empty sites but only two people had canceled there reservation. Nice sites and wish there were more available more sites.
RUOYU X
VerifiedMay 28, 2025 • Stayed at: Mammoth site #19, Loop: A
It is a real nice campground everywhere. The hosts are so kind and solve me many puzzles. This is the first time when I slept 9.5 hours in campground because the place make me feel so safe.
Danlei X
VerifiedMay 27, 2025 • Stayed at: Mammoth site #5, Loop: A
Mammoth opens for early season and I stayed for 3 nights. Overall, it’s a great stay for early season. The view is fantastic, and campsite quiet. Although, location wise it’s a bit of driving especially when there is traffic
Carol M
VerifiedMay 25, 2025 • Stayed at: Mammoth site #3, Loop: A
Excellent
William R
VerifiedMay 24, 2025 • Stayed at: Mammoth site #47, Loop: B
Campground hosts were cordial. They continuously patrol the campground in a loud gas-powered golf cart. Good for safety but a bit disturbing from the noise! Go electric.
Campground and bathrooms were clean. Lots of Bison and elk roaming through camp. Overall camping experience was enjoyable except for that golf cart!
Sue B
VerifiedMay 22, 2025 • Stayed at: Mammoth site #38, Loop: B
This is a lovely campground and the camp hosts were swell.
SUNG B M
VerifiedMay 21, 2025 • Stayed at: Mammoth site #81, Loop: tent
very clean and good jobs, Rangers!
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
