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
Roland H
VerifiedAugust 17, 2024 • Stayed at: Mammoth site #10, Loop: A
Campground seems to be renovated. Everything in excellent condition.
Diana K
VerifiedAugust 15, 2024 • Stayed at: Mammoth site #26, Loop: B
The campground hosts were helpful and available to provide information and answer questions. We had unreliable cellular service via AT&T at the campground. The restroom facilities were clean and stocked. The locations of water spigots were convenient.
Lori J
VerifiedAugust 15, 2024 • Stayed at: Mammoth site #45, Loop: B
Would recommend campsite #45 - fantastic view of the open field where we had a herd of Elk, a Grizzly Bear with 2 cubs, and an Eagle come by. We stayed in multiple places in Yellowstone - this is the only place where we wanted to come back early for dinner just to see what would show up.
Ine B
VerifiedAugust 13, 2024 • Stayed at: Mammoth site #30, Loop: B
The surroundings were beautiful, and the camp hosts were very friendly. However, I find it outdated that a campground doesn't have showers or wastewater disposal options. You have to carry your dishwater to a restroom building because they're afraid bears might wander onto the campsite.
julie c
VerifiedAugust 12, 2024 • Stayed at: Mammoth site #34, Loop: B
We stayed in site #34 and it had beautiful, beautiful views! The sites were pretty close together, but that is how most of the national park campsites are. The bathrooms were clean, and did I mention the views? Ha! Mammoth Springs was very close to National Park restaurants, gas, post office, etc.
We enjoyed our stay here immensely.
Kim M
VerifiedAugust 11, 2024 • Stayed at: Mammoth site #28, Loop: B
Our campsite was excellent and we enjoyed the views. Unfortunately, we could only get a reservation for 1 night and we noticed the next day all campers were heading out like us. It’s a shame that more consecutive nights aren’t available at Yellowstone unless you book a year in advance. Potable water, restrooms, and Ranger station were all great at Mammoth.
John C
VerifiedAugust 5, 2024 • Stayed at: Mammoth site #6, Loop: A
Great location for all of the activities in the Northwest part of the park! Seems to be a bit more frequently hit by storms though!
Nancy N
VerifiedJuly 31, 2024 • Stayed at: Mammoth site #65, Loop: A
Mammoth Campground is my favorite of any place I've camped in the country; it's beautiful, quiet with room between the campsites. People seem to be cancelling if they are unable to use their reservation and that's so helpful
Alma R
VerifiedJuly 30, 2024 • Stayed at: Mammoth site #36, Loop: B
My spot did not have any shade, which has unfortunate due to the heat the days I was there. I did like the location, it made it easy getting to Lamar Valley early in the morning.
Sam C
VerifiedJuly 29, 2024 • Stayed at: Mammoth site #71, Loop: Tent
Love the Mammoth area and campgrounds! Incredible views and quick access to upper terrace and Indian Creek!
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
