Warning
GeneralSummer Update: Enhancing our campground for youOur campground is getting an upgrade! A significant, multi-year construction project to enhance utility infrastructure will be occurring within the campground this summer. To minimize disruption to the campground experience, noise creating construction activities will be limited to 9am to 6pm. Please note that our laundry facilities will also have reduced availability during this project. We appreciate your patience as we improve your experience for seasons to come and cannot wait to welcome you this summer!
About Headwaters Campground at Flagg Ranch
Number of accommodations: 165
Campground Amenities
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General Store
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Pet Friendly
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Potable Water
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Restaurant
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Showers
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Propane
Seasonal information
2026 Season availability
Sites & Availability
165 Sites Available
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Site Details
Select a site to view details
165 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 (554)
What Guests Are Saying
Headwaters Campground at Flagg Ranch is highly praised for its excellent location between Yellowstone and Grand Teton, making it a convenient base for exploring both parks. Reviewers appreciate the clean facilities, friendly staff, and well-maintained grounds, along with amenities like hot showers and a grocery store on-site. While some noted noise levels and tight campsite spacing, many expressed satisfaction with their overall experiences and indicated they would return.
What Guests Are Saying
Headwaters Campground at Flagg Ranch is highly praised for its excellent location between Yellowstone and Grand Teton, making it a convenient base for exploring both parks. Reviewers appreciate the clean facilities, friendly staff, and well-maintained grounds, along with amenities like hot showers and a grocery store on-site. While some noted noise levels and tight campsite spacing, many expressed satisfaction with their overall experiences and indicated they would return.
Review Summary
Chris B
VerifiedAugust 19, 2025 • Stayed at: 319, Loop: 300s
Very nice campground. People were quiet at night and were pretty respectful. The only complaint is the dust. The roads and campsites were very dusty and it got everywhere. We stayed in site 319 and had 3 roads go by our site so there was always a constant stream of vehicles. Otherwise it was very nice and the staff was polite.
Caitlyn S
VerifiedAugust 19, 2025 • Stayed at: 107, Loop: 100s
Great little cabin, clean, sturdy, warm, bed was a little on the firm side, and showers weren't the best but overall a great spot on our trip.
Paige B
VerifiedAugust 18, 2025 • Stayed at: 214, Loop: 200s
Wonderful stay! I stayed in a cabin and they really had everything I needed! I brought my own pillow and sheets, but they had a lantern in the room, wifi on the campground, laundry machines, dish washing station, etc. The camp store, restaurant, and gift shop in the lodge about 200 meters away was also very convenient! The cabin was very clean and the campground was very quiet.
MELISSA W
VerifiedAugust 18, 2025 • Stayed at: 404, Loop: 400s
Very friendly staff. Nice central location between the two parks. There is a general store across from the campground which allowed us to fuel up and get coffees.
You forfeit privacy for the convenience, as the sites are very close together. We lucked out with our site, it had more grass and trees than other sites which our pups appreciated. I will say that although the sites were too close together for my taste, this park felt like a nature wonderland compared to the two parks we stayed at within Yellowstone!
Crispin H
VerifiedAugust 17, 2025 • Stayed at: 511, Loop: 500s
Overall a great RV campground. Has a small but nice lodge that serves breakfast, lunch and dinner. The Rv area is well shaded and bathhouse's are located close. The cost per night ($150) is high considering it's all gravel roads/parking pads, which makes it very dusty when people drive by even at 5mph. For the cost a road watering truck should be possible or blacktop main driveways. The staff is very courteous and accommodating early arrival. Location is excellent to visit Grand Tetons to the south and Yellowstone to the north. Has a small store and gas station by lodge again expect to pay for convivence ($4.50 for small bag of ice, etc). We enjoyed our stay with the exception of the dust problem, which could be fixed and should be for the price you pay.
Randy B
VerifiedAugust 17, 2025 • Stayed at: 607, Loop: 600s
We stayed for 7 nights at Flagg Ranch. The campground is in a beautiful area with the Snake River nearby. The restrooms and showers were well taken care of and clean. The staff was friendly and helpful. The only issue was that the roads were very dusty.
Cisco M
VerifiedAugust 17, 2025 • Stayed at: 214, Loop: 200s
Great cabin and grounds with clean bathrooms!
Joyce C
VerifiedAugust 17, 2025 • Stayed at: 408, Loop: 400s
Larger clean, well organized campground. Very close to prime fishing locations and Grand Teton National Park and Southern Yellowstone Park. Restuarant on site is amazing as is gift shop and small general store. Gas station has diesel fuel and reasonable prices. All RV sites are level
Jochen A
VerifiedAugust 17, 2025 • Stayed at: 504, Loop: 500s
A very nice campground just outside south entrance of Yellowstone. We enjoyed our stay very much. Everything was clean and personnel was very nice.
Mark W
VerifiedAugust 16, 2025 • Stayed at: 320, Loop: 300s
Very, very dusty! They need so much gravel brought in!!
Lots of trees with good space between spots, so that's nice.
ZERO t-mobile cell service. Camp wifi was spotty at best.
Lodge had gift shop, bar, restaurant and small convenience store with gas pumps ( gas was expensive).
Location Headwaters Campground at Flagg Ranch
Address:
1 Grassy Lake Road
Moran, WY, 83013
United States
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 miles from Old Faithful.
After exiting the south gate, Headwaters at Flagg Ranch will be just 2 miles 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 miles.
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.
Latitude & Longitude: 44.1068 / -110.666
Elevation: 2088 feet
Policies & Rules
| Category | About |
|---|---|
| General |
The maximum stay permitted at the Flagg Ranch Campground is 14 nights, and the maximum cumulative stay between all park campgrounds is 30 nights. Changing Reservations: • If a visitor wants to switch dates that are entirely outside of the original reservation dates, there is a $10 change fee.
Deposits:
Cancellations:
Late Cancellations or Cancellations within the Cut-off Window:
No-Shows:
Early Departures:
Refunds:
Emergency Closures:
|
Warnings & Advisories
Warning
GeneralSummer Update: Enhancing our campground for youOur campground is getting an upgrade! A significant, multi-year construction project to enhance utility infrastructure will be occurring within the campground this summer. To minimize disruption to the campground experience, noise creating construction activities will be limited to 9am to 6pm. Please note that our laundry facilities will also have reduced availability during this project. We appreciate your patience as we improve your experience for seasons to come and cannot wait to welcome you this summer!