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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
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
Susan K
VerifiedAugust 21, 2020 • Stayed at: B015, Loop: FLAT
Fabulous place to stay! Bring the water toys, sun block and enjoy floating down the river. It is also about 30 minutes away from Yellowstone NP.
Susan K
VerifiedAugust 21, 2020 • Stayed at: B015, Loop: FLAT
Fabulous place to stay! Bring the water toys, sun block and enjoy floating down the river. It is also about 30 minutes away from Yellowstone NP.
Mark M
VerifiedAugust 13, 2020 • Stayed at: B017, Loop: FLAT
Great location!
Mark M
VerifiedAugust 13, 2020 • Stayed at: B017, Loop: FLAT
Great location!
Kenneth S
VerifiedAugust 1, 2020 • Stayed at: B006, Loop: FLAT
Site was very clean and quiet.
Kenneth S
VerifiedAugust 1, 2020 • Stayed at: B006, Loop: FLAT
Site was very clean and quiet.
Charles C
VerifiedJuly 30, 2020 • Stayed at: B016, Loop: FLAT
Restrooms clean, camp site spacious, lots of shade at most sites. Be prepared for street noise since it is just off of the highway.
Charles C
VerifiedJuly 30, 2020 • Stayed at: B016, Loop: FLAT
Restrooms clean, camp site spacious, lots of shade at most sites. Be prepared for street noise since it is just off of the highway.
Greg G
VerifiedJuly 26, 2020 • Stayed at: B006, Loop: FLAT
I have camped in that area for many years. This was the worst campground hostess we have ever had. She not once said hello to me or my family. When we arrived there was no one in the campground host campsite. After we parked our trailer, we discovered smoke and a smoldering campfire and trash in the pit in our site. There was trash in the site and the campground. The campground had obviously not been cared for. We were there almost a week and never did we see the campground host care for any site or the campground itself. We went to throw our trash away and the host was walking her dogs. We found the trash was full so my wife asked when they would be emptied, and she never did answer.
Greg G
VerifiedJuly 26, 2020 • Stayed at: B006, Loop: FLAT
I have camped in that area for many years. This was the worst campground hostess we have ever had. She not once said hello to me or my family. When we arrived there was no one in the campground host campsite. After we parked our trailer, we discovered smoke and a smoldering campfire and trash in the pit in our site. There was trash in the site and the campground. The campground had obviously not been cared for. We were there almost a week and never did we see the campground host care for any site or the campground itself. We went to throw our trash away and the host was walking her dogs. We found the trash was full so my wife asked when they would be emptied, and she never did answer.
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
