Featured amenities
Pet Friendly
Sites & Rates
Average nightly rates81 total sites
RV Sites
59 sites
Tent Sites
22 sites
About Mammoth Campground (Yellowstone)
Number of accommodations: 81
Activities & Attractions
Nearby
Fishing
Year-round
Fishing
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Pet friendly
Pets and Policies
- Pet friendly
Rates, Sites & Availability
81 Sites Available
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Site Details
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81 Sites Available
No available sites
All sites are booked for your selected dates. Try showing all sites to see booked options, create an alert to be notified when something opens up, or adjust your dates.
Reviews (733)
What Guests Are Saying
Mammoth Campground offers clean facilities, friendly staff, and a beautiful location near Mammoth Hot Springs, making it an excellent base for exploring Yellowstone. Many reviews highlight the well-maintained bathrooms and accessible water spigots, as well as the stunning views and quiet atmosphere. However, some campers noted a lack of shade, noise from nearby traffic, and limited trail access, but overall, the campground is highly recommended for its amenities and scenic surroundings.
What Guests Are Saying
Mammoth Campground offers clean facilities, friendly staff, and a beautiful location near Mammoth Hot Springs, making it an excellent base for exploring Yellowstone. Many reviews highlight the well-maintained bathrooms and accessible water spigots, as well as the stunning views and quiet atmosphere. However, some campers noted a lack of shade, noise from nearby traffic, and limited trail access, but overall, the campground is highly recommended for its amenities and scenic surroundings.
Review Summary
Nancy T
VerifiedAugust 25, 2025 • Stayed at: Mammoth site #21, Loop: A
Mammoth Campground was a great location for our Yellowstone visit. Starting about 7 am took us to the Old Faithful area with no traffic slowdowns (and with a mama black bear and her cub ambling across the road just for us). Going toward the NE entrance through the Lammar Valley brought tons of buffalo, close but a comfortable distance away--babies nursing, bulls pawing and bellowing to win cows. It was a great location, and just 5 miles from restaurants in Gardiner when we wanted dinner out.
John h
VerifiedAugust 24, 2025 • Stayed at: Mammoth site #10, Loop: A
It was gorgeous; we saw a rabbit and herd elk bugling. The view was breathtaking, and the rangers were really nice.
David S
VerifiedAugust 23, 2025 • Stayed at: Mammoth site #24, Loop: A
Well maintained campground, in a picturesque location. My #24 tent campsite was impenetrable by my aluminum tent stakes, so wish I had brought weights to anchor the tent. Elk, including a nursing calf, cruised through in the morning.
Sigmar L
VerifiedAugust 23, 2025 • Stayed at: Mammoth site #48, Loop: B
Lovely and helpful ranger. Nice views and a quiet location. Clean restrooms. Well-maintained.
Megan M
VerifiedAugust 22, 2025 • Stayed at: Mammoth site #3, Loop: A
Beautiful area, campground was clean and nice. We saw 5 elk one morning in the campground, 3 female adults and two young. The bathrooms were nice and clean.
Carmen H
VerifiedAugust 21, 2025 • Stayed at: Mammoth site #12, Loop: A
Clean restrooms. Very friendly and helpful host. Her husband went to his house to get us a hammer to help with our tent. Excellent views. Several elk came to visit the campground. Absolutely the best campground we stayed at.
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.
Location Mammoth Campground (Yellowstone)
Address:
Yellowstone National Park
Yellowstone, WY, 82190
United States
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: September 8, 2026
