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Average nightly rates37 total sites
RV Sites
13 sites
Tent Sites
24 sites
About Flat Rock (Idaho)
Number of accommodations: 37
Activities & Attractions
Nearby
Fishing
Hiking
Year-round
Fishing
Hiking
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Parking
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Water and Hygiene
- Restrooms
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- Parking
Rates, Sites & Availability
37 Sites Available
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37 Sites Available
No available sites
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Reviews (177)
What Guests Are Saying
Flat Rock Campground in Idaho offers a clean and well-maintained environment with spacious campsites and beautiful surroundings, making it a great spot for families and outdoor enthusiasts. Many reviews highlight the helpfulness of camp host Annie, who is praised for her dedication to maintaining the campground. However, some guests report issues with noise from the nearby highway and mixed experiences with camp hosts, suggesting improvements in host interactions and garbage management would enhance the overall experience.
What Guests Are Saying
Flat Rock Campground in Idaho offers a clean and well-maintained environment with spacious campsites and beautiful surroundings, making it a great spot for families and outdoor enthusiasts. Many reviews highlight the helpfulness of camp host Annie, who is praised for her dedication to maintaining the campground. However, some guests report issues with noise from the nearby highway and mixed experiences with camp hosts, suggesting improvements in host interactions and garbage management would enhance the overall experience.
Review Summary
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.
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
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.
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
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.
The campground is accessible via U.S. Highway 20, which runs north and south with connections to West Yellowstone, Montana, and Ashton, Idaho.
Elevation: 1962 feet
5.4 mi drive to downtown Island Park (about 6 min)
Policies & Rules
General
- Wildlife Caution
- Idaho OHV Safety Message
- A $7 fee for extra vehicles will be collected at the campground
- No ATVs/OHVs allowed in the campground
- This campground has first come, first served sites
- Click here for more information on the Caribou-Targhee National Forest
- 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.
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Last updated: September 6, 2026
