About Flat Rock (IDAHO)
Number of accommodations: 37
Seasonal information
2026 Season availability
Sites & Availability
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Site Details
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37 Sites Available
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Reviews (77)
What Guests Are Saying
Flat Rock Campground in Island Park offers a clean, well-maintained environment with a friendly camp host who is dedicated to keeping the area organized and safe. Many campers appreciate the beautiful, shaded sites and proximity to outdoor activities, including access to the Henry’s Fork and Yellowstone National Park. However, some visitors have expressed disappointment regarding the rudeness of the camp host and issues with cleanliness, such as overflowing garbage and bathroom conditions. Overall, it remains a popular choice for its location and amenities, despite some concerns.
What Guests Are Saying
Flat Rock Campground in Island Park offers a clean, well-maintained environment with a friendly camp host who is dedicated to keeping the area organized and safe. Many campers appreciate the beautiful, shaded sites and proximity to outdoor activities, including access to the Henry’s Fork and Yellowstone National Park. However, some visitors have expressed disappointment regarding the rudeness of the camp host and issues with cleanliness, such as overflowing garbage and bathroom conditions. Overall, it remains a popular choice for its location and amenities, despite some concerns.
Review Summary
David G
VerifiedNovember 19, 2025 • Stayed at: B016, Loop: FLAT
Centrally located in Island Park. Good place for a couple nights stay. Watch out for those overhead branches. Make sure if you are in Loop B and coming from West Yellowstone you take the 2nd entrance, not the one down by the bridge.
Lisa K
VerifiedNovember 16, 2025 • Stayed at: B013, Loop: FLAT
So nice and quiet! Loved the cows!
Austin J
VerifiedSeptember 14, 2025 • Stayed at: B015, Loop: FLAT
Clean campground I’ve been to many times and usually enjoy. The host this year was just rude multiple times and ruined the entire experience. Will probably not be back.
Michael L
VerifiedSeptember 13, 2025 • Stayed at: B005, Loop: FLAT
Great campground host.
Kelli O
VerifiedSeptember 10, 2025 • Stayed at: B016, Loop: FLAT
Stinky bathrooms, bad but other than that, a nice place to stay.
Brent B
VerifiedSeptember 10, 2025 • Stayed at: B007, Loop: FLAT
Nice level long campsites. Shady, limited cellular. Camp host keeps things clean, but is very bear aware, so very anxious about materials outside your camper.
As others have mentioned, road noise is significant.
Randy S
VerifiedSeptember 9, 2025 • Stayed at: B007, Loop: FLAT
The host did an excellent job of taking care of the campground and all the campers
Joseph M
VerifiedAugust 28, 2025 • Stayed at: B009, Loop: FLAT
Great location, nice sites, most are heavily treed … some sites reservable, some with water and electricity. Others are “First Come”. Very convenient to access Mack’s Inn area and for floating the Henry’s Fork - you can literally take out by the campground. However, road noise from Hwy 20 is significant.
Daniel D
VerifiedAugust 25, 2025 • Stayed at: B011, Loop: FLAT
Camp host very welcoming and talkative. Camp is kept neat and organized
Carter M
VerifiedAugust 17, 2025 • Stayed at: B013, Loop: FLAT
Great place, large sites
Location Flat Rock (IDAHO)
Address:
Highway 20
Island Park, ID, 83429
United States
From West Yellowstone, Montana, take U.S. Highway 20 south for 22 miles, or from Ashton, Idaho, take U.S. Highway 20 north for 30 miles. The campground entrance is 1/4 mile south of Macks Inn on the west side of the highway.
Latitude & Longitude: 44.4969 / -111.34
Elevation: 1962 feet
Policies & Rules
| Category | About |
|---|---|
| General |
Wildlife Caution |
| General |
Idaho OHV Safety Message |
| General |
A $7 fee for extra vehicles will be collected at the campground |
| General |
No ATVs/OHVs allowed in the campground |
| General |
This campground has first come, first served sites |
| General |
Click here for more information on the Caribou-Targhee National Forest |
| General |
Don't Move Firewood: Help prevent the spread of tree-killing pests in our national forests by obtaining firewood near your destination and burning it on-site. For more information visit dontmovefirewood.org. |
