Featured amenities
Parking
Restrooms
About Flat Rock (Idaho)
Number of accommodations: 37
Nearby Activities & Attractions
Fishing
Hiking
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Parking
Restrooms
Water and Hygiene
- Restrooms
Parking and Transport
- Parking
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Rates, Sites & Availability
37 Sites Available
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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
Scott D
VerifiedJuly 20, 2023 • Stayed at: B015, Loop: FLAT
The campground was nice. It’s close to mesa falls which is pretty to see.
Jim D
VerifiedJuly 20, 2023 • Stayed at: B011, Loop: FLAT
The camp hosts are great! Great location to Yellowstone, clean and nice campground and some of the cleanest vault toilets I’ve seen.
Heather L
VerifiedJuly 11, 2023 • Stayed at: B007, Loop: FLAT
This was a great campground. Beautiful, clean, spacious, the works. The only drawback was the road noise. Otherwise, amazing experience!
Heather L
VerifiedJuly 11, 2023 • Stayed at: B007, Loop: FLAT
This was a great campground. Beautiful, clean, spacious, the works. The only drawback was the road noise. Otherwise, amazing experience!
Charles C
VerifiedJune 30, 2023 • Stayed at: B017, Loop: FLAT
Vaulted toilets were exceptionally clean. Hosts were very kind and took care of the sites very well. Extremely happy to have them there.
Charles C
VerifiedJune 30, 2023 • Stayed at: B017, Loop: FLAT
Vaulted toilets were exceptionally clean. Hosts were very kind and took care of the sites very well. Extremely happy to have them there.
Lenn H
VerifiedJune 23, 2023 • Stayed at: B010, Loop: FLAT
Campground hosts are awesome. Campground is immaculate
Lenn H
VerifiedJune 23, 2023 • Stayed at: B010, Loop: FLAT
Campground hosts are awesome. Campground is immaculate
Ronald P
VerifiedJune 21, 2023 • Stayed at: B011, Loop: FLAT
Camp Host Dan and Annie were great. Very kind, gracious and infomative. We will be back.
Ronald P
VerifiedJune 21, 2023 • Stayed at: B011, Loop: FLAT
Camp Host Dan and Annie were great. Very kind, gracious and infomative. We will be back.
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
