What are the hours and season for Flat Rock (Idaho)?

Flat Rock (Idaho) is open May through October. Check-in: 2:00 PM. Check-out: 12:00 PM.

How do I book a campsite at Flat Rock (Idaho)?

Flat Rock (Idaho) is a federal campground — book at Recreation.gov (search "Flat Rock (Idaho)"). Sites are released 6 months in advance and sell out quickly. Set a free CamperWatch cancellation alert at camperwatch.org/campground/flat-rock-idaho to be notified the moment a site opens up.

Flat Rock (Idaho)

Caribou-Targhee National Forest — lakeside, fishing, hiking

ISLAND PARK, ID4.4 (77)

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Flat Rock Campground is located 22 miles south of West Yellowstone, Montana and 30 miles north of Ashton, Idaho in beautiful Island Park, Idaho. Highway 20 and the Henry’s Fork of the Snake River at an elevation of 6,400 feet.Island Park is composed of two areas of extinct volcanic activity. The Henry’s Fork Caldera sits inside the larger Island Park Caldera.

Things to do nearby

Caribou-Targhee National ForestFork of the Snake RiverMesa Falls

Best For

AnglersHikersBoatersWildlife watchersFamilies

Site Types

TentRV

Amenities

Fire Rings

Picnic Tables

Vault Toilets

Drinking Water

Showers

Electric Hookups

Fishing

Boat Launch

Check-in

2:00 PM

Check-out

12:00 PM

Season

May through October

Max/site

6 people

Known Issues

Federal campground — book early. No hookups at most sites. Seasonal operations.

Cancellation Policy

Recreation.gov: full refund if cancelled 7+ days before arrival. $10 cancellation fee applies.

Frequently asked questions

How much does Flat Rock (Idaho) cost per night?+

Flat Rock (Idaho) costs $25–$62 per night depending on site type and season. Hookup options: Electric hookups on select sites. No water/sewer.

What season is Flat Rock (Idaho) open?+

Flat Rock (Idaho) is open May through October. Check-in is 2:00 PM, check-out is 12:00 PM.

Does Flat Rock (Idaho) have hookups?+

Electric hookups on select sites. No water/sewer.

What is the maximum RV length at Flat Rock (Idaho)?+

Flat Rock (Idaho) can accommodate RVs up to 65 feet long.

How do I make reservations at Flat Rock (Idaho)?+

Flat Rock (Idaho) is a federal campground — reservations open 6 months in advance at Recreation.gov. Sites sell out quickly. Set a free CamperWatch cancellation alert to be notified the moment a site opens.

How far is Flat Rock (Idaho) from the nearest town?+

Flat Rock (Idaho) is located in ISLAND PARK, ID. Check the map above for distance to nearby services.

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