FLAT ROCK (IDAHO)
FLAT ROCK (IDAHO)
FLAT ROCK (IDAHO)
FLAT ROCK (IDAHO)
FLAT ROCK (IDAHO)

Featured amenities

Parking Parking
Restrooms 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 sites

Activities & Attractions

Nearby

Fishing

Fishing

Year-round
Hiking

Hiking

Year-round

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
Dec
Currently closed

Campground Amenities

Most popular amenities

Parking Parking
Restrooms Restrooms
Water and Hygiene

Water and Hygiene

  • Restrooms
Parking and Transport

Parking and Transport

  • Parking
Missing information?

Rates, Sites & Availability

Select check-in and check-out dates to see real-time availability for each site.

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
🚐 B007, Loop: FLAT RV
50 amp · Gravel · Driveway entry: Back-In
🚐 B008, Loop: FLAT RV
50 amp · Gravel · Driveway entry: Back-In
🚐 B009, Loop: FLAT RV
50 amp · Gravel · Driveway entry: Back-In
🚐 B010, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B011, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B012, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B013, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B014, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B015, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B016, Loop: FLAT RV
Gravel · Driveway entry: Back-In
🚐 B017, Loop: FLAT RV
Gravel · Driveway entry: Back-In
⛺ XXX1, Loop: MANAGEMENT SITES Tent
⛺ XXX10, Loop: MANAGEMENT SITES Tent
⛺ XXX11, Loop: MANAGEMENT SITES Tent
⛺ XXX12, Loop: MANAGEMENT SITES Tent
⛺ XXX13, Loop: MANAGEMENT SITES Tent
⛺ XXX14, Loop: MANAGEMENT SITES Tent
⛺ XXX15, Loop: MANAGEMENT SITES Tent
⛺ XXX16, Loop: MANAGEMENT SITES Tent
⛺ XXX17, Loop: MANAGEMENT SITES Tent
⛺ XXX18, Loop: MANAGEMENT SITES Tent
⛺ XXX19, Loop: MANAGEMENT SITES Tent
⛺ XXX2, Loop: MANAGEMENT SITES Tent
⛺ XXX20, Loop: MANAGEMENT SITES Tent
⛺ XXX21, Loop: MANAGEMENT SITES Tent
⛺ XXX22, Loop: MANAGEMENT SITES Tent
⛺ XXX23, Loop: MANAGEMENT SITES Tent
⛺ XXX24, Loop: MANAGEMENT SITES Tent
⛺ XXX3, Loop: MANAGEMENT SITES Tent
⛺ XXX4, Loop: MANAGEMENT SITES Tent
⛺ XXX5, Loop: MANAGEMENT SITES Tent
⛺ XXX6, Loop: MANAGEMENT SITES Tent
⛺ XXX7, Loop: MANAGEMENT SITES Tent
⛺ XXX8, Loop: MANAGEMENT SITES Tent
⛺ XXX9, Loop: MANAGEMENT SITES Tent

Reviews

188 reviews

Summary

AI generated

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

Write a review
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

Ellen S

Verified

August 19, 2021 Stayed at: B015, Loop: FLAT

Very clean campsite. Clean bathrooms. Dog friendly and walkable to Mack's Inn where the rest of the family was.

Helpful

Elmer F

Verified

August 15, 2021 Stayed at: B014, Loop: FLAT

Awesome campground , close to all recreational activities.

Helpful

Elmer F

Verified

August 15, 2021 Stayed at: B014, Loop: FLAT

Awesome campground , close to all recreational activities.

Helpful

Marty W

Verified

July 28, 2021 Stayed at: B007, Loop: FLAT

Nice clean campground no showers and no water at each campsite

Helpful

Marty W

Verified

July 28, 2021 Stayed at: B007, Loop: FLAT

Nice clean campground no showers and no water at each campsite

Helpful

Sarah S

Verified

July 25, 2021 Stayed at: B017, Loop: FLAT

it's very close to the road. I wanted that originally because It's right across the street from Mack's Inn and I was going to float Big Spring with them. But the campground is SO loud. Also, if you're going in the 2021 summer season the camp host is kind of annoying. I knew there were fire restrictions in place because I researched and called the visitor center- they are allowed in developed campgrounds and inside the designated fire ring. He told us that it could not be above the fire ring, I had a single log burning and he stopped to tell me it was too high. I think he should probably shovel his pit more if a single log is too high for him? It just seemed like he made this regulation up and he wouldn't leave us alone. I was visited by him every evening at dinner time and other times aside from that. I just wanted to be left alone while I was camping. He did keep everything clean but I'd rather a dirty pit toilet if it means I can camp in peace.

Helpful

Sarah S

Verified

July 25, 2021 Stayed at: B017, Loop: FLAT

it's very close to the road. I wanted that originally because It's right across the street from Mack's Inn and I was going to float Big Spring with them. But the campground is SO loud. Also, if you're going in the 2021 summer season the camp host is kind of annoying. I knew there were fire restrictions in place because I researched and called the visitor center- they are allowed in developed campgrounds and inside the designated fire ring. He told us that it could not be above the fire ring, I had a single log burning and he stopped to tell me it was too high. I think he should probably shovel his pit more if a single log is too high for him? It just seemed like he made this regulation up and he wouldn't leave us alone. I was visited by him every evening at dinner time and other times aside from that. I just wanted to be left alone while I was camping. He did keep everything clean but I'd rather a dirty pit toilet if it means I can camp in peace.

Helpful

Bonnie K

Verified

July 8, 2021 Stayed at: B005, Loop: FLAT

Camp hosts are very friendly and are working very hard to keep campsites clean and restrooms clean. Love this campsite and appreciate what they do.

Helpful

Bonnie K

Verified

July 8, 2021 Stayed at: B005, Loop: FLAT

Camp hosts are very friendly and are working very hard to keep campsites clean and restrooms clean. Love this campsite and appreciate what they do.

Helpful

Ryan B

Verified

June 27, 2021 Stayed at: B005, Loop: FLAT

Campsite was nice and well spaced apart from adjacent campsites. Unfortunately, the road noise was quite loud and disappointing. The camp host was very grumpy and not helpful at all.

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.

Nearest town

Island Park, ID - 5.4 mi

About 6 min to downtown

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.

Nearby Campgrounds

Nearby destinations


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

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Managed by the USDA Forest Service