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
Dave H
VerifiedJuly 1, 2025 • Stayed at: 503, Loop: 500s
We had a great time at Headwaters - Flagg Ranch. Wish we would have stayed longer!
Emily H
July 1, 2025
Fantastic campsite! We stayed in a camper cabin and it was great. Loved the fire pit and picnic table at each site! I also appreciate the laundry room (though we didn’t use it) as well as the bathrooms (always clean and stocked!) I would recommend this site to anyone, I loved it. It’s so close to two great national parks! I will absolutely be coming back in the future.
Ryan M
VerifiedJuly 1, 2025 • Stayed at: 528, Loop: 500s
Awesome little campsite between Yellowstone and Grant Tetons. The lodge was also pretty nice with a convenience store, gift shop, and restaurant. The campground was clean and had free WiFi. We were towards the back and the WiFi was occasionally spotty, but it worked and it was a welcomed amenity. Overall had a great time there!
Takahiro T
VerifiedJuly 1, 2025 • Stayed at: 409, Loop: 400s
Very nice place. The stars are very beautiful as well as the Grand Teton Mountains.
John-Austin J
VerifiedJune 30, 2025 • Stayed at: 627, Loop: 600s
The campground was nice with the spaces, trees and scenery. Hookup was easy and accessible. The bathhouses were not kept up very well compared to other campgrounds we had stayed at. They needed to be cleaned and attended to. That was the main drawback.
Desmond G
VerifiedJune 30, 2025 • Stayed at: 106, Loop: 100s
Lovely site, but not really a good choice for a 34 ft RV. About 4-6 inches space on either side of the RV. The removal of 1 small tree on site 106 would make the difference between a difficult and time consuming parking and an easy in and out.
Pam J
VerifiedJune 30, 2025 • Stayed at: 102, Loop: 100s
Nice and friendly staff. Clean cabins. Great place to stay for visiting both National parks in one go! Can’t wait to do it again!
Bob G
June 30, 2025
Just stayed one night, but the site and facilities were great.
Melinda L
VerifiedJune 29, 2025 • Stayed at: 701, Loop: 700s
We were only there 2 nights so we didn't really get to explore the campground so this review is based on the layout, bathrooms, etc. For the size of the campground, there isn't enough bathrooms or showers. Campsites are basically right on top of each other. So close we could hear the the people snoring in the site next to us. Pricey when compared to area campgrounds. Not sure I will stay again. Clean though and the store is nice.
Laura H
VerifiedJune 29, 2025 • Stayed at: 514, Loop: 500s
The campground is in a beautiful area with all the things you need. It is very well kept. The bear boxes are clean and quite large! The bathrooms were clean and the showers were some of the best campground bathrooms I’ve encountered. I would 100% return to this campground.
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!