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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No available sites
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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
Mae F
VerifiedSeptember 24, 2025 • Stayed at: 623, Loop: 600s
Beautiful setting and convenient location, but very overpriced.
Asael R
VerifiedSeptember 23, 2025 • Stayed at: 602, Loop: 600s
We totally enjoyed our stay! Great location to see both the Tetons and Yellowstone. Our cabin was basic but did the job. Shower facilities were clean and had great hot water... perfect for after a long day hiking. We went to the restaurant at the lodge and the breakfast was great!!! Tasty biscuits and gravy!
We'll definitely be back.
Alex G
VerifiedSeptember 22, 2025 • Stayed at: 526, Loop: 500s
Great Facility,
Rene F
VerifiedSeptember 22, 2025 • Stayed at: 506, Loop: 500s
Sites were not level and sewer hook up pipe was too high to allow for proper drainage.
Geno G
September 21, 2025
What a gem of a place to stay. The campground was very clean and welcoming. The staff was fantastic - meeting people and sharing stories from all over the world and Yellowstone! Would definitely stay there again!
Jenny B
VerifiedSeptember 21, 2025 • Stayed at: 108, Loop: 100s
Cabin is cozy and clean! Bathrooms and showers areas are clean. Could use some warm water in the dishwashing station, but overall, satisfied.
Melissa Q
VerifiedSeptember 20, 2025 • Stayed at: 402, Loop: 400s
This was by far the worst campground I have been in for some time. Campsites are extremely tight and if you are a tent camper like me, your head while sleeping is only feet from someone’s vehicle or the road. Campsite staff was rude and unhelpful. The campground is very confusing. We helped multiple people find their way back to their sites. There are roads everywhere and lots and lots of dust. I will never camp here again. I recommend closing this campground.
Mark D
VerifiedSeptember 20, 2025 • Stayed at: 519, Loop: 500s
Very friendly and helpful. The sewer connection was very tall and hard to use. Nice location to both parks.
Danielle W
VerifiedSeptember 18, 2025 • Stayed at: 214, Loop: 200s
We were very pleased with our cabin at Flagg Ranch! It was the perfect amount of space for us and held heat really well. The campground grounds and restrooms were kept very clean. And the location was perfect.
Lisa G
VerifiedSeptember 18, 2025 • Stayed at: 109, Loop: 100s
We stayed at a cabin site that held a 30ft rv. We didn’t use the cabin, we stayed in our RV. There was no discount from my senior park pass for a cabin, so we just paid it because we couldn’t get reservations anywhere else. It’s located way north of anything to do in Grand Tetons but it’s on the main road. There is a gas/diesel station there and a nice little store. It’s close to the hot springs but we found out two things about that. 1. A long hike crossing a small river up to your thigh. 2. Has bad bacteria that invades your body through skin sores and eyes.
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!