Buttermilk Campground

Area Status: Closed
Buttermilk Campground Sign

Buttermilk Campground is located on the shore of beautiful Island Park Reservoir in Island Park, Idaho at an elevation of 6,200 feet. A mixed growth lodgepole pine forest provides partial shade and summer wildflowers are abundant. Island Park Reservoir offers boating, waterskiing, fishing, kayaking, and canoeing, as well as boat ramps and fish cleaning stations. There are 47 single sites, 6 double sites and 1 group site. There is a boat ramp.

At a Glance

Current Conditions: Campground is open.
Operational Hours: A Campground Host resides in the campground. 
Reservations: Some of these campsites can be reserved by calling Toll Free 1-877-444-6777  https://www.recreation.gov/camping/campgrounds/233826
Area Amenities: Accessible, Boat ramp, Tent camping, Camping trailer, Picnic tables, Toilets, Drinking water
Fees: Single Family Campsite - $20.00/day use or overnight
Double Family Campsite - $40.00/day use or overnight
Second Vehicle Charge – 7.00/car
IA Senior Pass – Single Site - $10.00/day use or overnight
Buttermilk Group Site : Friday/Saturday – $130.00/day use or overnight
Buttermilk Group Site : Sunday-Thursday - $65.00/day use or overnight

Open Season: May
Usage: Medium
Restrictions: No All Terrain Vehicles (ATVs) or Off-HighwayVehicles (OHVs)allowed in the park.
Water: Potable Water
Restroom: Vault Toilet
Operated By: Concessionaire

General Information


From West Yellowstone, Montana travel south on Hwy. 20 for approximately 25 miles or 79 miles north of Idaho Falls, ID. Turn right on to the Yale - Kilgore Road (across from the Elk Creek Gas Station).  You can either go ~1/2 mile and turn left or go 2 miles and turn left onto the Buttermilk Loop Road. Buttermilk Campground is at the bottom of the Loop.


Buttermilk Campground offers running water, vault toilets and bear-proof garbage dumpsters.

Recreation Map

Map showing recreational areas. Map Information


Campground Camping

Camping, Fishing, and Boating

No. of Sites 53 campsites and 1 group site
Reservation Info https://www.recreation.gov/camping/campgrounds/233826

RV Camping

"Click Here for a Campground Site Map"

Group Camping

The Group Site has nine campsites:  Four double sites and 5 single sites, restrooms, water, volleyball area and a large parking lot.  It can accomodate up to 120 people.

"Click here to see the Group Site Map"

General Info:


The Campground offers five boat docks with a concrete loading ramp. Diving and waterskiing from the docks is prohibited.  A large parking area near the boat ramp provides parking for boat trailers and fisherman.

Lake and Pond Fishing

Island Park Reservoir

General Info:


The Island Park Reservoir was created by an earthfilled dam, that was built in 1938.  the dam is 91 feet high and 1250 feet long.  Various species of fish abound in the Reservoir, including kokanee salmon, rainbow and cutthroat trout.  The Reservoir provides boating, fishing and water skiing opportunities.

River and Stream Fishing




Camping trailer: Yes
Picnic tables: Yes
Tent camping: Yes
Toilets: Yes
Accessible: Yes
Boat ramp: Island Park Reservoir
Drinking water: Yes

Recreation Areas

Recreation Activities


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