Featured amenities
Parking
Restrooms
Sites & Rates
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
Hiking
Year-round
Fishing
Hiking
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Parking
Restrooms
Water and Hygiene
- Restrooms
Parking and Transport
- Parking
Report Incorrect Information
Help us improve by reporting any incorrect amenity information for Flat Rock (Idaho).
Rates, Sites & Availability
37 Sites Available
No sites found matching your criteria.
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.
Site Details
Select a site to view details
37 Sites Available
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 (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
Sherri Y
VerifiedDecember 23, 2019 • Stayed at: B007, Loop: FLAT
Convenient location next to highway 20. Great camp hosts. Super friendly.
Sherri Y
VerifiedDecember 23, 2019 • Stayed at: B007, Loop: FLAT
Convenient location next to highway 20. Great camp hosts. Super friendly.
Geri K
VerifiedJanuary 11, 2020 • Stayed at: B016, Loop: FLAT
Great campground with easy access to area lakes and rivers. Walking distance to the river. Clean with lots of room for trailers or tents. Loved it! Will return.
Geri K
VerifiedJanuary 11, 2020 • Stayed at: B016, Loop: FLAT
Great campground with easy access to area lakes and rivers. Walking distance to the river. Clean with lots of room for trailers or tents. Loved it! Will return.
Dalton C
VerifiedJanuary 15, 2020 • Stayed at: B015, Loop: FLAT
The camp hosts were friendly and the facilities were clean. Though near the highway, it was quiet and peaceful. The campsite was cleaned and raked before we arrived.
Jack A
VerifiedJanuary 15, 2020 • Stayed at: B008, Loop: FLAT
The camp ground is a five star rating; however, it is located next to (100 feet) the main highway between West Yellowstone, MT and Ashton, Idaho. You hear all the traffic noise...all the time. There is a small highway grade passing the campground and the semi-trucks are giving the diesel pedal all they have. Upper Coffee Pot campground is 1 1/2 miles away and is better IF YOU CAN GET RESERVATIONS six months in advance! I mean SIX MONTHS to the day because people starting calling as soon as reservations open. If you don't mind the road noise, Flat Rock is a great place to stay and close enough to Yellowstone Park without taking your banker with you on your trip...20 minute drive to Yellowstone. Cheaper than West Yellowstone and Yellowstone National Park.
Dalton C
VerifiedJanuary 15, 2020 • Stayed at: B015, Loop: FLAT
The camp hosts were friendly and the facilities were clean. Though near the highway, it was quiet and peaceful. The campsite was cleaned and raked before we arrived.
Jack A
VerifiedJanuary 15, 2020 • Stayed at: B008, Loop: FLAT
The camp ground is a five star rating; however, it is located next to (100 feet) the main highway between West Yellowstone, MT and Ashton, Idaho. You hear all the traffic noise...all the time. There is a small highway grade passing the campground and the semi-trucks are giving the diesel pedal all they have. Upper Coffee Pot campground is 1 1/2 miles away and is better IF YOU CAN GET RESERVATIONS six months in advance! I mean SIX MONTHS to the day because people starting calling as soon as reservations open. If you don't mind the road noise, Flat Rock is a great place to stay and close enough to Yellowstone Park without taking your banker with you on your trip...20 minute drive to Yellowstone. Cheaper than West Yellowstone and Yellowstone National Park.
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
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
Nearby destinations
Last updated: September 6, 2026
