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

Mary V

Verified

September 23, 2026 Stayed at: B009, Loop: FLAT

Audi has no consistently. This place had no communication, no way to figure out that not only services closed but the actual gates closed within 20 hours of a date you took e\reservtion. Host w\said she “had a life too” and that is why campground gates were closing on just sept. 15. Buffalo campground had completely different maintenance and host vibe. We left and did not even stay even though we paid. I definitely would not want Audi if this is the mode of peration. Can’t call anyone to even ask a question.

Helpful

Jeffrey S

Verified

September 14, 2026 Stayed at: B010, Loop: FLAT

The campground and bathroom facilities were very well maintained. You could hear traffic though as it was located near the main road. The camping spot had enough room to put tents on fairly easily. It was quiet. The only issue was the light from the bathroom was glaring right into our camping spot. It didn't keep us awake or anything so it wasn't terrible, but it was nice to have a bathroom nearby too. The lady that came to collect for a third car was rude at first with my wife, but I also thought maybe by the end of the camping season, she'd seen her share and expected pushback. Once we paid, she was good with us and drove off. But overall was a good experience. Don't know if I'll come back as it was close to the main road, the light and keeper. But even then maybe a different spot would've been better. It was our first time there so you don't know what you don't know.

Helpful

Matt H

Verified

September 14, 2026 Stayed at: B015, Loop: FLAT

Anne/Annie(?) was extremely helpful and friendly. She made sure we behaved safely by checking whether we had proper bear deterrents, and were storing our food and supplies in a way to keep everyone, and all the wildlife safe. She informed us of the recent lift of the burn ban and supplied us with a small amount of firewood for our last night there. We even had vehicle issue, and she was willing to help us jump-start our dead battery.

The whole site was very clean, no trash laying around, and the bathrooms were very clean, and almost completely odor free (for an open pit toilet, that's rare).

The sites were spacious, flat, and well laid out.

All in all, a very nice stay!

Helpful

Grant H

Verified

September 12, 2026 Stayed at: B013, Loop: FLAT

Helpful host

Helpful

Tom R

Verified

September 5, 2026 Stayed at: B011, Loop: FLAT

Great place to spend a few days at.

Helpful

Preston W

Verified

August 28, 2026 Stayed at: B017, Loop: FLAT

This site was almost perfect for my over-night stay! It has easy access to stores, West Yellowstone, basic amenities, and is kept very well. The only reason I didn't give it 5 stars was because of how close the highway is to the site, which causes a decent amount of noise in the night. Even despite this, I would still highly recommend this site.

Helpful

Andrew M

Verified

August 28, 2026 Stayed at: B016, Loop: FLAT

It would have been nice if the campsite information provided the distance to the river for each campsite. I wanted to fly fish and was pretty far away from the water and I could have had a sight right next to the water. But your information online doesn't give you that

Helpful

Wally S

Verified

August 25, 2026 Stayed at: B005, Loop: FLAT

The host was wonderful. She rakes out the dirt area, the picnic table sits in . Very clean and organized campsite. We will stay there again.

Helpful

Mark N

Verified

August 24, 2026 Stayed at: B006, Loop: FLAT

We both got very sick with either food poisoning or flu. We think it might have been from the water at the campsite. The host had turned on all the faucets in the campground the 2nd day of our stay to flush the system. I suspect bad water.

Helpful

mark w

Verified

August 24, 2026 Stayed at: B015, Loop: FLAT

i would give the host a rating of 1 out of five, she does not understand the concept of "host".

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