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
Fred D
VerifiedOctober 9, 2025 • Stayed at: 628, Loop: 600s
It was great! Had to modify dates and the online system worked well. Checked in late and the Staff at
the Lodge were very polite and helpful.
CG was
great and bathrooms were clean and warm.
Rhis is a place to be a base while exploring Grand Teton and Jackson. Close
together but flat and plenty of room for reasoanably sized rigs. NOT for these giant tractor
teailer sized trailers with nine slides
Laura D
VerifiedOctober 8, 2025 • Stayed at: 319, Loop: 300s
Great campground at the north end of Grand Teton- friendly folks, clean facilities and access to a small grocery/camp store was great!
John L
VerifiedOctober 8, 2025 • Stayed at: 713, Loop: 700s
Perfect little Camper Cabin!
Sheng-Yean C
VerifiedOctober 7, 2025 • Stayed at: 706, Loop: 700s
Easy to locate. Easy check in and out. Clean bathroom and shower. Portable water available. Free WiFi available by bathroom, check in area and the lobby of the lodge nearby. The campground is at a perfect location to visit both YellowStone and Grand Teton National Parks if one cannot find suitable campsite inside either parks. We stay at a tent site. It is flat, easy to set up a tent. At the RV site, there are electric hook up that can accommodate level 2 EV charger. A big plus for EV owner.
Kelly G
VerifiedOctober 7, 2025 • Stayed at: 108, Loop: 100s
Really enjoyed my stay it was convenient and staff was very helpful
Kelli C
VerifiedOctober 7, 2025 • Stayed at: 328, Loop: 300s
Great location if you are visiting both Yellowstone and Grand Teton. Spots were close together however still nice. Only complaint was the barking dogs. It was hard to enjoy peaceful fires at night with barking dogs in the campers around us and outside at people's campsites.
Jennifer P
VerifiedOctober 7, 2025 • Stayed at: 303, Loop: 300s
We had a great site, saw some beautiful stars at night.
Roger W
VerifiedOctober 7, 2025 • Stayed at: 424, Loop: 400s
Friendly staff. Convenient location to see both parks.
Jeremy W
VerifiedOctober 7, 2025 • Stayed at: 413, Loop: 400s
Quiet, flat and clean. Spaces are little closer together but for Rv, vans, cab overs it’s no biggie. Sites are all level or near level. Clean bathrooms, and clean showers included in site fees.
Claire A
October 5, 2025
The overall setting and staff are 5 stars. I’ve stayed here multiple times, and would definitely stay again.
I gave it three stars for a few reasons I see as places for easy improvements.
1 - we stayed in cabin 101 not realizing it faces the dumpsters, check-in area and main flow of all incoming traffic, which over a weekend is constant. That all devalues it. People staying there do not get the same peace and value as those in other cabins and it should be a discounted price during weekends and peak times.
Additionally, since there was no apparent campground host, guess where everyone arriving late goes? That’s right! Cabin 101!!! We were interrupted 4 separate times in one evening by people needing my to know basic campground wayfinding because signage is so minimal and there are no hosts up front in that spot.
Lastly, the hooks in Cabin 101 and in the closest bathroom all appeared to be ripped off. I hate that guests can’t keep things nice! But having those makes a big difference in functionality.
Place a host prominently up front by check in. Place user-friendly signage. Fix simple things like hooks in cabins and bathrooms. Give guests in 101 a slight discount since that stay is definitely not the same value as others.
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!