RV Sites
Tent Sites
Lenn H
VerifiedJune 9, 2025 Stayed at: B009, Loop: FLAT
The campground host does a outstanding job of taking care of the campground as well as keeping track of the visitors. Clone her and put her is all the campgrounds
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Featured amenities
Parking
Restrooms
About Flat Rock (Idaho)
Flat Rock Campground is located 22 mi south of West Yellowstone, Montana and 30 mi north of Ashton, Idaho in beautiful Island Park, Idaho. Flat Rock is adjacent to U.S. Highway 20 and the Henry's Fork of the Snake River at an elevation of 6.4 ft.
Available sites
37 total sitesActivities & Attractions
Nearby
Fishing
Year-round
Hiking
Year-round
Year-round
Fishing
Nearby
Hiking
Nearby
Seasonal information
2026
(Current year)
2026 Season availability
Current season
Upcoming seasons
Past seasons
Closed periods
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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Currently closed
Campground Amenities
Most popular amenities
Parking
Restrooms
Water and Hygiene
- Restrooms
Parking and Transport
- Parking
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Rates, Sites & Availability
Select check-in and check-out dates to see real-time availability for each site.
37 Sites Available
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B005, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B006, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B007, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B008, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B009, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B010, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B011, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B012, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B013, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B014, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B015, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B016, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B017, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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XXX1, Loop: MANAGEMENT SITES
Tent
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XXX10, Loop: MANAGEMENT SITES
Tent
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XXX11, Loop: MANAGEMENT SITES
Tent
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XXX12, Loop: MANAGEMENT SITES
Tent
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XXX13, Loop: MANAGEMENT SITES
Tent
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XXX14, Loop: MANAGEMENT SITES
Tent
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XXX15, Loop: MANAGEMENT SITES
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XXX16, Loop: MANAGEMENT SITES
Tent
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XXX17, Loop: MANAGEMENT SITES
Tent
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XXX18, Loop: MANAGEMENT SITES
Tent
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XXX19, Loop: MANAGEMENT SITES
Tent
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XXX2, Loop: MANAGEMENT SITES
Tent
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XXX20, Loop: MANAGEMENT SITES
Tent
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XXX21, Loop: MANAGEMENT SITES
Tent
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XXX22, Loop: MANAGEMENT SITES
Tent
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XXX23, Loop: MANAGEMENT SITES
Tent
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XXX24, Loop: MANAGEMENT SITES
Tent
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XXX3, Loop: MANAGEMENT SITES
Tent
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XXX4, Loop: MANAGEMENT SITES
Tent
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XXX5, Loop: MANAGEMENT SITES
Tent
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XXX6, Loop: MANAGEMENT SITES
Tent
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XXX7, Loop: MANAGEMENT SITES
Tent
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XXX8, Loop: MANAGEMENT SITES
Tent
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XXX9, Loop: MANAGEMENT SITES
Tent
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Site Details
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37 Sites Available
Site
Price
🚐
B005, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
🚐
B006, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B007, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B008, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B009, Loop: FLAT
RV
50 amp · Gravel · Driveway entry: Back-In
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B010, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B011, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B012, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B013, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B014, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B015, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B016, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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B017, Loop: FLAT
RV
Gravel · Driveway entry: Back-In
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XXX1, Loop: MANAGEMENT SITES
Tent
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XXX10, Loop: MANAGEMENT SITES
Tent
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XXX11, Loop: MANAGEMENT SITES
Tent
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XXX12, Loop: MANAGEMENT SITES
Tent
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XXX13, Loop: MANAGEMENT SITES
Tent
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XXX14, Loop: MANAGEMENT SITES
Tent
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XXX15, Loop: MANAGEMENT SITES
Tent
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XXX16, Loop: MANAGEMENT SITES
Tent
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XXX17, Loop: MANAGEMENT SITES
Tent
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XXX18, Loop: MANAGEMENT SITES
Tent
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XXX19, Loop: MANAGEMENT SITES
Tent
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XXX2, Loop: MANAGEMENT SITES
Tent
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XXX20, Loop: MANAGEMENT SITES
Tent
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XXX21, Loop: MANAGEMENT SITES
Tent
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XXX22, Loop: MANAGEMENT SITES
Tent
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XXX23, Loop: MANAGEMENT SITES
Tent
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XXX24, Loop: MANAGEMENT SITES
Tent
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XXX3, Loop: MANAGEMENT SITES
Tent
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XXX4, Loop: MANAGEMENT SITES
Tent
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XXX5, Loop: MANAGEMENT SITES
Tent
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XXX6, Loop: MANAGEMENT SITES
Tent
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XXX7, Loop: MANAGEMENT SITES
Tent
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XXX8, Loop: MANAGEMENT SITES
Tent
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XXX9, Loop: MANAGEMENT SITES
Tent
No available sites
All sites are booked for your selected dates. Try showing all sites to see booked options, create an alert to be notified when something opens up, or adjust your dates.
Reviews
188 reviews
Summary
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.
Based on guest feedback
4.3
Overall rating
Based on 188 reviews
5 stars
57.4% (108)
4 stars
25.0% (47)
3 stars
9.0% (17)
2 stars
3.7% (7)
1 star
4.8% (9)
Showing 188 reviews
Verified Only
Sort by: Oldest First
Tracey S
VerifiedJune 23, 2025 Stayed at: B013, Loop: FLAT
We had a great time. The campground Hostess was ever-present (which is a good thing) and the campground was clean and beautiful. We saw lots of wildlife and enjoyed the serene beauty of the area. Thank you!
Helpful
Tracey S
VerifiedJune 23, 2025 Stayed at: B013, Loop: FLAT
We had a great time. The campground Hostess was ever-present (which is a good thing) and the campground was clean and beautiful. We saw lots of wildlife and enjoyed the serene beauty of the area. Thank you!
Helpful
Michael L
VerifiedJune 30, 2025 Stayed at: B005, Loop: FLAT
Good campground host.
Helpful
Michael L
VerifiedJune 30, 2025 Stayed at: B005, Loop: FLAT
Good campground host.
Helpful
James M
VerifiedJuly 4, 2025 Stayed at: B007, Loop: FLAT
The facilities were great and the campsite was clean. The one reason that I will never camp there anymore is your camp host was mean. Very rude. Every time I had an interaction with her and accusing when I had questions. I wasn’t the only one that had this experience. Everyone that was in our camp party had the same exact experience with this woman. If camp host were changed, I would consider going back, but until that woman is removed I will not be going back to that campsite.
Helpful
James M
VerifiedJuly 4, 2025 Stayed at: B007, Loop: FLAT
The facilities were great and the campsite was clean. The one reason that I will never camp there anymore is your camp host was mean. Very rude. Every time I had an interaction with her and accusing when I had questions. I wasn’t the only one that had this experience. Everyone that was in our camp party had the same exact experience with this woman. If camp host were changed, I would consider going back, but until that woman is removed I will not be going back to that campsite.
Helpful
Sarah J
VerifiedJuly 10, 2025 Stayed at: B011, Loop: FLAT
Excellent campground! The camp host Annie is wonderful! Bathrooms were the cleanest around. We will definitely be back!
Helpful
Sarah J
VerifiedJuly 10, 2025 Stayed at: B011, Loop: FLAT
Excellent campground! The camp host Annie is wonderful! Bathrooms were the cleanest around. We will definitely be back!
Helpful
Christi L
VerifiedJuly 18, 2025 Stayed at: B013, Loop: FLAT
Great location for shade and close to the river for cooling off in the summer. Lot's of activities all around. Close proximity to Yellowstone National Park was a key factor for our group. Go early in the morning for the busy season or you have to wait in line just to get into the park.
Camp has a fair amount of road noise due to close proximity of the highway, but very tolerable.
Helpful
Location & Directions for Flat Rock (Idaho)
Highway 20, Island Park, ID 83429 United States
Elevation: 1,962 ft
Getting There
From West Yellowstone, Montana, take U.S. Highway 20 south for 22 mi, or from Ashton, Idaho, take U.S. Highway 20 north for 30 mi. The campground entrance is 1/4 mi south of Macks Inn on the west side of the highway.
Highway access
The campground is accessible via U.S. Highway 20, which runs north and south with connections to West Yellowstone, Montana, and Ashton, Idaho.
Near Yellowstone National Park
The closest entrance is: West Entrance
Approximate drive: 20.2 mi · 35 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: October 24, 2026
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Explore Island Park, ID
Population: 170
Nearby city: Idaho Falls, ID
Approx. 78 mi away (straight-line distance)
Elevation: 6,289 ft
Island Park, ID
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Managed by the USDA Forest Service