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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
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Year-round
Fishing
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Seasonal information
2026 Season availability
Campground Amenities
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- Restrooms
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- Parking
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Rates, Sites & Availability
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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
Frank H
VerifiedJanuary 16, 2020 • Stayed at: B015, Loop: FLAT
We love Island Park, and we love Flat Rock campground. Level, clean sites. Easy access to water. Clean bathrooms, friendly camp hosts. Close to Big Spring and river floating access.
Lee H
VerifiedJanuary 16, 2020 • Stayed at: B011, Loop: FLAT
nice clean place to camp
Lisa J
VerifiedJanuary 17, 2020 • Stayed at: B017, Loop: FLAT
Nice campground. Some road noise. Camp hostess was anything but welcoming.
Lisa J
VerifiedJanuary 17, 2020 • Stayed at: B017, Loop: FLAT
Nice campground. Some road noise. Camp hostess was anything but welcoming.
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.
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.
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.
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.
Nearby Campgrounds
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Last updated: September 6, 2026
