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!
Sites & Rates
Average nightly rates165 total sites · $107.59 avg/night
RV Sites
94 sites
$125/night
average
Tent Sites
33 sites
$61/night
average
Cabins
38 sites
$105/night
average
About Headwaters Campground at Flagg Ranch
Number of accommodations: 165
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
General Store
Pet friendly
Showers
Water and Hygiene
- Potable Water
- Showers
On Site Services
- General Store
- Restaurant
- Propane
Pets and Policies
- Pet friendly
Report Incorrect Information
Help us improve by reporting any incorrect amenity information for Headwaters Campground at Flagg Ranch.
Rates, 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 (2350)
What Guests Are Saying
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.
What Guests Are Saying
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.
Review Summary
Francesca K
VerifiedJune 30, 2026 • Stayed at: 502, Loop: 500s
We stayed for one night to use the laundry and full hook ups after several days of boon docking and heading off to Yellowstone for several more days without any hook ups. A few days later we returned to buy gas before proceeding further on our trip. It's a very good location for a gas station, convenience store, and a nice tree-full campground. Would stay again without hesitation.
Brian P
VerifiedJuly 1, 2026 • Stayed at: 531, Loop: 500s
Great campground with clean facilities and wonderful location. The cabins were perfect if you don’t want to travel with a tent but still want to camp in the park.
Gina C
VerifiedJuly 2, 2026 • Stayed at: 211, Loop: 200s
This place has no insulation, so even though we had blankets and pillows, we were very cold with no heat. The staff was only half attentive, said they would provide blankets and pillows but an hour later they still weren’t there. Hot water was present half the time.
Andres C
VerifiedJuly 2, 2026 • Stayed at: 704, Loop: 700s
Spacious. Your alarm clock will be the cars that start driving by early in the morning.
Geniesse B
VerifiedJuly 4, 2026 • Stayed at: 415, Loop: 400s
The park is large, accommodates all sizes of RVs, full hookups available, quiet campground, offers clean bathrooms with showers, grocery store, gift store, restaurant and bar, 2 gas pumps, and laundry room. Sites are pull through, easy set up. Staff is friendly. We appreciated the very convenient location between Tetons and Yellowstone. Highly recommend! We camped at Headwaters Lodge & Cabins at Flagg Ranch in a Motorhome.
Jim T
VerifiedJuly 4, 2026 • Stayed at: 501, Loop: 500s
My son and I had a great time at headwaters. Our campsite was clean and private.
Alex S
VerifiedJuly 5, 2026 • Stayed at: 615, Loop: 600s
Highly recommend this campground! Easy check in, clean restrooms, and they have a well stocked store for any food or toiletries you may have forgotten. The campground was beautiful and quiet. We were at site 615 and it felt quite private as we were at the end and no one on our immediate sides.
Aleah G
VerifiedJuly 5, 2026 • Stayed at: 202, Loop: 200s
Cabin 202 was clean and easy to get to. It was a little bit of a hike to the bathroom and fitting 5 in the cabin was a tight fit, but it was still worth the stay.
Bill K
VerifiedJuly 6, 2026 • Stayed at: 405, Loop: 400s
This is a very nice campground.
Keith W
VerifiedJuly 6, 2026 • Stayed at: 503, Loop: 500s
Nice site. A bit close to neighbors. Strange sewer connection. Laundry was out of coins and very 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.
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.
Elevation: 2088 feet
25 mi drive to downtown Moran (about 36 min)
Policies & Rules
Arrival & departure
Check out time
11AM
Cancellation policy
- Reservation fees are non-refundable. For campsites, cabins, lookouts, yurts, group sites, and similar stays, we charge a reservation service fee of $8.
- Standard cancellations usually have a $10 cancellation fee. Customers can generally cancel before the check-in date online.
- Late cancellation rules differ by stay type.
- Individual campsites: cancelling after 12:00am local time the day before arrival usually means a $10 cancellation fee plus forfeiting the first night's fee.
- Cabins, lookouts, and yurts: cancelling less than 14 days before arrival usually means a $10 cancellation fee plus forfeiting the first night's fee.
- One-night reservations: a late cancellation usually forfeits the full amount paid, up to the total original reservation cost.
- Modifications are allowed before the cut-off window, but fees depend on the change. Changing to dates completely outside the original reservation dates may trigger a $10 change fee. Extending or shortening a stay that still includes original dates usually has no change fee, though refunds may depend on timing and facility rules. Switching to the same type of campsite for the same dates usually has no change fee, but price differences are charged or refunded.
- Early departures may or may not be refunded. At certain facilities, partial refunds may be possible if staff can mark the site available for other visitors. No refund is given for a night if the early departure is requested after that day's check-out time.
- Security deposits are separate. Security deposits may be refunded to the original payment method if the facility is left in acceptable condition, as determined by the property.
Cancellation policy
- Emergency closures will result in a full refund and notifications sent to the visitor.
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!
Nearby Campgrounds
Nearby destinations
Last updated: August 24, 2026
