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
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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
Lauranne S
VerifiedOctober 5, 2025 • Stayed at: 524, Loop: 500s
Perfect location for Grand Teton/Yellowstone base camp. Quiet during quiet times.
Angel C
VerifiedOctober 5, 2025 • Stayed at: 208, Loop: 200s
⭐⭐⭐⭐⭐ 5/5 — Perfect stay at Headwaters at Flagg Ranch!
We had such a wonderful time staying at Headwaters at Flagg Ranch! The location was absolutely perfect—right between Grand Teton and Yellowstone, which made exploring both parks super convenient. The mountains were stunning, the air was crisp, and we even spotted some wildlife nearby!
The campground was peaceful and quiet, with clean bathrooms and well-kept facilities. It really felt like the perfect balance of comfort and nature. This is our 3rd year here and we’ll definitely be coming back!
Karl M
VerifiedOctober 5, 2025 • Stayed at: 623, Loop: 600s
Loved the location, perfect for exploring and enjoying both Yellowstone National Park and Teton National Park, the campsite was more than adequate and the facilities were clean and well maintained. I would recommend it for anyone planning on seeing both parks.
Lori C
VerifiedOctober 4, 2025 • Stayed at: 624, Loop: 600s
Comfortable amenities and right in-between Yellowstone and the Grand Tetons!
Bonnie L
VerifiedOctober 4, 2025 • Stayed at: 531, Loop: 500s
We stayed in a camper cabin 531 and had a great experience! The cabin was clean and comfortable — just bring a bright lantern and maybe a sleeping pad for the bunks. The staff were friendly, the restrooms and showers were spotless, and we loved how tidy the campground was with recycling and dog waste stations throughout.
Breakfast at the lodge was great, and having a grocery store and gas on-site was super convenient. The location is perfect for visiting both national parks, and our cocker spaniels were right at home!
Frances B
VerifiedOctober 3, 2025 • Stayed at: 702, Loop: 700s
Very nice location and proximity to YNP. Tent sites were very roomy and clean. Breakfast Buffet at the Lodge was limited selection and over priced.
Restrooms and showers were too far from the tent sites.
Alberto P
VerifiedOctober 3, 2025 • Stayed at: 323, Loop: 300s
Headwaters Campground At Flagg Ranch was a great campground. It was the perfect place for our home base while we explored Yellowstone and the Grand Tetons. Highly recommend this place!
Treg W
VerifiedOctober 3, 2025 • Stayed at: 409, Loop: 400s
The campground is in a good location as it is close to the northern exit of Tetons/Southern entrance to Yellowstone. There are many trees for shade, bathrooms are clean and showers are included and there is a gas station, convenience store and restaurant onsite. The campground is clean and well kept. It was a bit more expensive than other campgrounds but it was very nice and a good value. Due to all the amenities and convenient location, I recommend this campground and I would camp here again without hesitation.
Darren H
October 3, 2025
Headeaters is great. It's tight. A little too tight. I wouldn't recommend a big rig over 30ft. But you can if you are confident. I heard Elk buging in the evening. It's right between Yellowstone and The Tetons. It's perfect to stay there if you are visiting both.
Daniel A
VerifiedOctober 2, 2025 • Stayed at: 326, Loop: 300s
Rustic campground in bear country, clean bathrooms/showers, no wifi, muddy when raining
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:
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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!