Mike S
VerifiedJune 19, 2025 Stayed at: 529, Loop: 500s
We stayed almost a week. It was fantastic. This was our second trip to the Tetons and stayed at Flagg Ranch CG. I wouldn’t stay anywhere else.
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2457 reviews
Headwaters Campground at Flagg Ranch is a well-maintained facility conveniently located between Yellowstone and Grand Teton, making it an ideal base for exploring both parks. Visitors appreciated the clean amenities, friendly staff, and additional features like a gas station, store, and free showers. However, some campers noted high prices at the store and close proximity of sites, which could lead to noise and lack of privacy. Overall, many expressed a desire to return due to the campground's positive aspects.
Based on guest feedback
4.3
Based on 2457 reviews
Showing 2375 reviews
June 19, 2025 Stayed at: 529, Loop: 500s
We stayed almost a week. It was fantastic. This was our second trip to the Tetons and stayed at Flagg Ranch CG. I wouldn’t stay anywhere else.
Helpful
June 19, 2025 Stayed at: 304, Loop: 300s
Wonderful base camp for Yellowstone. South Entrance is just 2 mi away. Situated on the Snake River in Lodge Pole Pines. We had site 304 and it was fine, but wished we would have gotten one on the back side, (500s and 600s) with more trees and opening onto the meadows down to the river. Sites are closer together than it looks like on recreation.gov. Definitely prepare for mosquitos, but this can change each season and time of year of course. Wonderful walk/bike down closed road to Pole Cat Creek and Huckleberry Springs. Just beautiful! Only complaint and this is because we were on a two week road trip and needed the laundry amenity. Highway robbery at 5.25 a wash load and 3.25 a dry! Quarter machine was broken and front desk at the lodge didn't have quarters either. Did a nice horse back ride as well. The little and bigger cabins look great, many with wonderful views. Lodge has a restaurant and bar, we didn't use but look cute. Gas station with wood, ice, and everything else you might need. Would stay again.
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June 19, 2025 Stayed at: 516, Loop: 500s
Good campground just outside south entry to Yellowstone.
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June 19, 2025 Stayed at: 529, Loop: 500s
We stayed almost a week. It was fantastic. This was our second trip to the Tetons and stayed at Flagg Ranch CG. I wouldn’t stay anywhere else.
Helpful
June 19, 2025 Stayed at: 304, Loop: 300s
Wonderful base camp for Yellowstone. South Entrance is just 2 mi away. Situated on the Snake River in Lodge Pole Pines. We had site 304 and it was fine, but wished we would have gotten one on the back side, (500s and 600s) with more trees and opening onto the meadows down to the river. Sites are closer together than it looks like on recreation.gov. Definitely prepare for mosquitos, but this can change each season and time of year of course. Wonderful walk/bike down closed road to Pole Cat Creek and Huckleberry Springs. Just beautiful! Only complaint and this is because we were on a two week road trip and needed the laundry amenity. Highway robbery at 5.25 a wash load and 3.25 a dry! Quarter machine was broken and front desk at the lodge didn't have quarters either. Did a nice horse back ride as well. The little and bigger cabins look great, many with wonderful views. Lodge has a restaurant and bar, we didn't use but look cute. Gas station with wood, ice, and everything else you might need. Would stay again.
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June 19, 2025 Stayed at: 516, Loop: 500s
Good campground just outside south entry to Yellowstone.
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June 19, 2025 Stayed at: 529, Loop: 500s
We stayed almost a week. It was fantastic. This was our second trip to the Tetons and stayed at Flagg Ranch CG. I wouldn’t stay anywhere else.
Helpful
June 20, 2025 Stayed at: 310, Loop: 300s
Park is conveniently located just south of the entrance to Yellowstone making it a easy drive to the park. The facility is older and could use some upgrading. We found the sites to be small and parking of your tow vehicle was difficult. Bath house could also use some upgrading as well. Showers were small, and the water temp difficult to keep consistent. They promote being bear aware which is a good thing however the garbage containers were typically full whenever we went to use them. Laundry machines are available but expensive compared to other places we have been.
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June 20, 2025 Stayed at: 310, Loop: 300s
Park is conveniently located just south of the entrance to Yellowstone making it a easy drive to the park. The facility is older and could use some upgrading. We found the sites to be small and parking of your tow vehicle was difficult. Bath house could also use some upgrading as well. Showers were small, and the water temp difficult to keep consistent. They promote being bear aware which is a good thing however the garbage containers were typically full whenever we went to use them. Laundry machines are available but expensive compared to other places we have been.
Helpful
June 20, 2025 Stayed at: 310, Loop: 300s
Park is conveniently located just south of the entrance to Yellowstone making it a easy drive to the park. The facility is older and could use some upgrading. We found the sites to be small and parking of your tow vehicle was difficult. Bath house could also use some upgrading as well. Showers were small, and the water temp difficult to keep consistent. They promote being bear aware which is a good thing however the garbage containers were typically full whenever we went to use them. Laundry machines are available but expensive compared to other places we have been.
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1 Grassy Lake Road, Moran, WY 83013 United States
Elevation: 2,088 ft
The address for Headwaters at Flagg Ranch is located below; however, due to this property's remote location, GPS cannot always be relied on.
100 Grassy Lake Rd.
Moran, WY 83013
(Two miles south of the south gate of Yellowstone)
From Yellowston...
The address for Headwaters at Flagg Ranch is located below; however, due to this property's remote location, GPS cannot always be relied on.
100 Grassy Lake Rd.
Moran, WY 83013
(Two miles south of the south gate of Yellowstone)
From Yellowstone:
Follow the signage to the South gate of Yellowstone - about 40 mi from Old Faithful.
After exiting the south gate, Headwaters at Flagg Ranch will be just 2 mi South on the right side of the road.
From Jackson, WY:
Head North from Jackson on US 191/89.
Turn left to continue on US 191/89 at the Moran Junction and enter the Grand Teton National Park through the Moran entrance.
Continue straight through the Jackson Lake junction for another 21 mi.
Headwaters at Flagg Ranch will be located on the left side of the road.
As you pull into the property, the lodge will be located on your right and the campground will be on the left.
Please note Grassy Lake Road is a dirt and gravel road that leads to Ashton, Idaho. Four-wheel drive is strongly encouraged on this narrow single-lane road. It is not recommended for trailer traffic or large vehicles.
Headwaters Campground at Flagg Ranch is accessible via US 191/89, which connects to the Moran Junction. The campground is located approximately 2 miles south of the south gate of Yellowstone National Park.
The closest entrance is: South Entrance
Approximate drive: 2.4 mi · 4 min
The closest entrance is: Moran Entrance Station
Approximate drive: 24 mi · 41 min
Check out time
11AM
Last updated: November 4, 2026