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Parking
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About Flat Rock (Idaho)
Number of accommodations: 37
Nearby Activities & Attractions
Fishing
Hiking
Seasonal information
2026 Season availability
Campground Amenities
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Parking
Restrooms
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- Restrooms
Parking and Transport
- Parking
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Rates, Sites & Availability
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37 Sites Available
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Reviews (154)
What Guests Are Saying
Flat Rock in Island Park offers a great location with clean facilities and spacious, shaded campsites, making it ideal for a short stay. Many visitors appreciate the welcoming and attentive campground host, who maintains a neat environment and fosters a pleasant atmosphere. However, some guests have reported issues with rude interactions with the host and road noise from the nearby highway, which detracts from the experience.
What Guests Are Saying
Flat Rock in Island Park offers a great location with clean facilities and spacious, shaded campsites, making it ideal for a short stay. Many visitors appreciate the welcoming and attentive campground host, who maintains a neat environment and fosters a pleasant atmosphere. However, some guests have reported issues with rude interactions with the host and road noise from the nearby highway, which detracts from the experience.
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.
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!
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.
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.
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.
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.
Latitude & Longitude: 44.4969 / -111.34
Elevation: 1962 feet
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.
Nearby Campgrounds
Nearby destinations
Last updated: June 4, 2026
