October 8, 2023 Stayed at: 624, Loop: 600s
Great check-in Host, Mary. Very kind and welcoming! Wish it wasn’t the last day for the park as we would have stayed longer.
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2457 reviews
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.
Based on guest feedback
4.3
Based on 2457 reviews
Showing 2375 reviews
October 8, 2023 Stayed at: 624, Loop: 600s
Great check-in Host, Mary. Very kind and welcoming! Wish it wasn’t the last day for the park as we would have stayed longer.
Helpful
October 9, 2023 Stayed at: 516, Loop: 500s
Large campground south of Yellowstone and north of Grand Teton. We used this campground to access the southern loop of Yellowstone since we could not get a site in Yellowstone. Sites were good size, spacing was fair, and mostly level. Full hookups, but the sewer hookups are very high, almost a foot off the ground. They have a side port that’s not quite as high, but the threads on mine were messed up. Got staff to help, and they got them fixed, but still high and had to “slinky” it out when dumping. Forest around the campground was burnt a few years ago, so it’s not appealing driving in. Finding the campground was a little difficult as there was very minimal signage driving in the complex. It’s across from the gas station. Gas prices here was darn near the cheapest the entire trip. We made sure to fill up! Staff checking in was helpful. Staff helping with the sewer issue was moody. The lodge next to the campground was really nice and they have great Wi-Fi open to the public 24/7. No t-mobile cell coverage. Would not say it was worth the $100 per night fee, but when it’s the only option, they can charge what they want.
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October 9, 2023 Stayed at: 516, Loop: 500s
Large campground south of Yellowstone and north of Grand Teton. We used this campground to access the southern loop of Yellowstone since we could not get a site in Yellowstone. Sites were good size, spacing was fair, and mostly level. Full hookups, but the sewer hookups are very high, almost a foot off the ground. They have a side port that’s not quite as high, but the threads on mine were messed up. Got staff to help, and they got them fixed, but still high and had to “slinky” it out when dumping. Forest around the campground was burnt a few years ago, so it’s not appealing driving in. Finding the campground was a little difficult as there was very minimal signage driving in the complex. It’s across from the gas station. Gas prices here was darn near the cheapest the entire trip. We made sure to fill up! Staff checking in was helpful. Staff helping with the sewer issue was moody. The lodge next to the campground was really nice and they have great Wi-Fi open to the public 24/7. No t-mobile cell coverage. Would not say it was worth the $100 per night fee, but when it’s the only option, they can charge what they want.
Helpful
October 9, 2023 Stayed at: 516, Loop: 500s
Large campground south of Yellowstone and north of Grand Teton. We used this campground to access the southern loop of Yellowstone since we could not get a site in Yellowstone. Sites were good size, spacing was fair, and mostly level. Full hookups, but the sewer hookups are very high, almost a foot off the ground. They have a side port that’s not quite as high, but the threads on mine were messed up. Got staff to help, and they got them fixed, but still high and had to “slinky” it out when dumping. Forest around the campground was burnt a few years ago, so it’s not appealing driving in. Finding the campground was a little difficult as there was very minimal signage driving in the complex. It’s across from the gas station. Gas prices here was darn near the cheapest the entire trip. We made sure to fill up! Staff checking in was helpful. Staff helping with the sewer issue was moody. The lodge next to the campground was really nice and they have great Wi-Fi open to the public 24/7. No t-mobile cell coverage. Would not say it was worth the $100 per night fee, but when it’s the only option, they can charge what they want.
Helpful
October 9, 2023 Stayed at: 516, Loop: 500s
Large campground south of Yellowstone and north of Grand Teton. We used this campground to access the southern loop of Yellowstone since we could not get a site in Yellowstone. Sites were good size, spacing was fair, and mostly level. Full hookups, but the sewer hookups are very high, almost a foot off the ground. They have a side port that’s not quite as high, but the threads on mine were messed up. Got staff to help, and they got them fixed, but still high and had to “slinky” it out when dumping. Forest around the campground was burnt a few years ago, so it’s not appealing driving in. Finding the campground was a little difficult as there was very minimal signage driving in the complex. It’s across from the gas station. Gas prices here was darn near the cheapest the entire trip. We made sure to fill up! Staff checking in was helpful. Staff helping with the sewer issue was moody. The lodge next to the campground was really nice and they have great Wi-Fi open to the public 24/7. No t-mobile cell coverage. Would not say it was worth the $100 per night fee, but when it’s the only option, they can charge what they want.
Helpful
October 10, 2023 Stayed at: 602, Loop: 600s
We loved this spot, located between Yellowstone and Grand Teton, it was perfect. We loved the cabin which was well-insulated and stayed much warmer than the freezing temperature outside at night. The bathrooms were well-lit, conveniently located, and had warm showers and a dishwashing station. Overall the campground felt welcoming and taken care of and we would love to stay again!
Helpful
October 10, 2023 Stayed at: 602, Loop: 600s
We loved this spot, located between Yellowstone and Grand Teton, it was perfect. We loved the cabin which was well-insulated and stayed much warmer than the freezing temperature outside at night. The bathrooms were well-lit, conveniently located, and had warm showers and a dishwashing station. Overall the campground felt welcoming and taken care of and we would love to stay again!
Helpful
October 10, 2023 Stayed at: 602, Loop: 600s
We loved this spot, located between Yellowstone and Grand Teton, it was perfect. We loved the cabin which was well-insulated and stayed much warmer than the freezing temperature outside at night. The bathrooms were well-lit, conveniently located, and had warm showers and a dishwashing station. Overall the campground felt welcoming and taken care of and we would love to stay again!
Helpful
October 10, 2023 Stayed at: 602, Loop: 600s
We loved this spot, located between Yellowstone and Grand Teton, it was perfect. We loved the cabin which was well-insulated and stayed much warmer than the freezing temperature outside at night. The bathrooms were well-lit, conveniently located, and had warm showers and a dishwashing station. Overall the campground felt welcoming and taken care of and we would love to stay again!
Helpful
October 14, 2023 Stayed at: 411, Loop: 400s
Everything was great. Wish I had more time to stay longer.
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1 Grassy Lake Road, Moran, WY 83013 United States
Elevation: 2,088 ft
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 Yellowston...
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 mi from Old Faithful.
After exiting the south gate, Headwaters at Flagg Ranch will be just 2 mi 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 mi.
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.
The closest entrance is: South Entrance
Approximate drive: 2.4 mi · 4 min
The closest entrance is: Moran Entrance Station
Approximate drive: 24 mi · 41 min
Check out time
11AM
Last updated: November 4, 2026