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
Report Incorrect Information
Help us improve by reporting any incorrect amenity information for Mammoth Campground (Yellowstone).
Rates, Sites & Availability
81 Sites Available
No sites found matching your criteria.
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.
Site Details
Select a site to view details
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 (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
Judith P
VerifiedSeptember 18, 2025 β’ Stayed at: Mammoth site #17, Loop: A
Out of the places we went to on Yellowstone Nationalpark Mammoth Campground was the nicest one. Relaxed, calm and the wildlife comes literally to your doorstep.
Kirstin S
VerifiedSeptember 18, 2025 β’ Stayed at: Mammoth site #7, Loop: A
Location was great! We also had a heard of elk walk through our campground so that was really fun!
Charles B
VerifiedSeptember 16, 2025 β’ Stayed at: Mammoth site #17, Loop: A
Love, love Mammoth campground! Lovely people, pull-through spaces, great views, quiet at night, and bugling elk this year!
Michelle T
VerifiedSeptember 15, 2025 β’ Stayed at: Mammoth site #28, Loop: B
I agree with the previous review that this spot is not great for rvs. It's not level at all. The camp host were very friendly and we had an amazing time watching the elk!
Catherine B
VerifiedSeptember 14, 2025 β’ Stayed at: Mammoth site #74, Loop: Tent
The campground was clean and all services like toilets and water pumps were working great! Campers observed quiet hours, much appreciated! Highly recommend staying here if you're planning to see the rest of Yellowstone.
Brad A
VerifiedSeptember 12, 2025 β’ Stayed at: Mammoth site #31, Loop: B
We had been here in June. We picked a site this time with a better view. Day 4 a lot of smoke. Large bear boxes allowed me to easily stow our Weber grill. Weβll be back.
Heidi M
VerifiedSeptember 12, 2025 β’ Stayed at: Mammoth site #22, Loop: A
Great view and hikes from site
Lorena T
VerifiedSeptember 11, 2025 β’ Stayed at: Mammoth site #50, Loop: B
Like it, quite, nice hike spot near by. Sad I could put up a hammock but it was good. Would stay agin
Dario C
VerifiedSeptember 11, 2025 β’ Stayed at: Mammoth site #30, Loop: B
Itβs a good place to
Dario C
VerifiedSeptember 11, 2025 β’ Stayed at: Mammoth site #70, Loop: Tent
It was amazing
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.
Nearby Campgrounds
Nearby destinations
Last updated: June 4, 2026
