Buttermilk

Show on map208-558-7658 OR 208-270-0094
BUTTERMILK LOOP RD
ISLAND PARK, ID 83429

Overview

Buttermilk Campground is located approximately 30 miles southwest of West Yellowstone, Montana and 32 miles north of Ashton, Idaho in beautiful Island Park, Idaho.

Buttermilk sits next to Island Park Reservoir at an elevation of 6,200 feet. Visitors love Island Park for its world-class fishing and outstanding scenery and wildlife viewing opportunities.

Recreation

The Island Park area is prized for its fishing; the Henry's Fork is known as one of the nation's best fly-fishing streams. Anglers cast for rainbow, cutthroat and brook trout and Kokanee salmon.

Island Park Reservoir offers boating, water skiing and excellent fishing opportunities. The reservoir is used for irrigation so the water level recedes throughout the summer, but is generally useable all season. Henry's Lake is nearby.

Hiking, biking, horseback riding and ATVing are popular activities. Many miles of trails are in the area, including the Continental Divide National Scenic Trail and the Nez Perce Trail.

The Big Springs National Recreation Water Trail offers an approximately three-hour float or canoe trip through beautiful scenery. Wildlife, including moose, bald eagles and Sandhill cranes, are often seen along the trail.

Facilities

The campground contains two loops for single family camping and one loop for group camping, with a total of 55 sites. The large group site can accommodate up to 150 people. Site 038 has 15-amp electric hookups.

Vault toilets and drinking water are provided. A concrete boat ramp with docks is located between the group camping and single family camping loops. Access to the campground is on a paved road but the interior loop roads and parking spurs are gravel.

Natural Features

Island Park is composed of two areas of extinct volcanic activity. The Henry's Fork Caldera sits inside the larger Island Park Caldera. The area is known for its dense forests of lodgepole pine, broad grassy meadows bursting with summer wildflowers and a wide variety of wildlife, including black and grizzly bears, moose, elk, deer, bald eagles, Sandhill cranes and much, much more.

The campground is situated in a forest of lodgepole pine, which provides partial shade in some sites. Some areas of the campground are more open and sunny than others.

Nearby Attractions

Mesa Falls Scenic Byway is 13 miles south of the campground. This 28-mile road leads to scenic overlooks and trails at 110 foot Upper Mesa Falls and 85 foot Lower Mesa Falls.

Harriman State Park is 15 miles south. The Henry's Fork meanders through the Harriman, offering excellent fishing. Over 20 miles of trails are available, and wildlife is abundant in this scenic park.

Henry's Lake State Park is 18 miles north, offering fishing, a fish cleaning station and boat ramp.

Yellowstone National Park's west entrance is just 29 miles north in the town of West Yellowstone, Montana. Visitors enjoy day-tripping to the park for unparalleled wildlife viewing and the beautiful and unique scenery.

Camp site features

Across 21 camp sites:

  • Electric hookups: 1 of 21 sites
  • Water hookups: 2 of 21 sites
  • Pets allowed: 1 of 21 sites
  • Group sites: 1 of 21 sites
  • Longest RV: 50 ft
  • Largest party: 150 people
  • Power up to 15 amps
  • Equipment: RV, Tent, Trailer

Fees

Group Site Fees: $65.00 per night Sunday through Thursday and $130.00 per night Friday and Saturday. A weekly rate is not available.

Directions

From West Yellowstone, Montana, take Highway 20 south, southwest for approximately 25 miles and from Ashton, Idaho, take Highway 20 north for approximately 27 miles. Turn west onto the Kilgore-Yale Road #030 (across from Elk Creek Gas Station) and go about 2 miles to the Buttermilk Loop Road #126. Turn onto #126 and go approximately 3 miles to an intersection where you will see the campground sign just off the right side of the road. The road will split ahead, with boat ramp and group area on the left, and the single loops to the right.

Stay Limit

Check in from 2 PM, check out by 12 PM.

Reviews

117 reviews
5 stars
85
4 stars
23
3 stars
6
2 stars
1
1 stars
2
Timothy P
Loop:B
Site:
Reviewed 2 months ago
Great site and loved that it was rather secluded and near the water
Amy M
Loop:B
Site:
Reviewed 2 months ago
Beautiful place to camp. The water level on the inlet was way down, but that didn’t take away from a great time. The area was clean and there was privacy in the site. The Host drove through once daily to check on things and was very friendly. Would love to come back to Buttermilk.
Denise M
Loop:Buttermilk
Site:
Reviewed 2 months ago
this campground is wonderfull, big , fits a lot of larger trailors, near by we enjoy the fair that is held at island park village this is during the labor day weekend, we enjoy floating the bear river . There is tons of 4 wheel riding trail's .
spencer s
Loop:B
Site:
Reviewed 2 months ago
host's were great, clean, restrooms were very clean..
Jeff S
Loop:B
Site:
Reviewed 2 months ago
3 negatives at the campground- the reservoir was in a major algae bloom, the pit toilet smelled awful, and they were updating the campground so there was jack hammering during the day.
Georgina G
Loop:B
Site:
Reviewed 3 months ago
We love Buttermilk! Great sites, lots of trails for biking and running, close to the water, nice and quiet.
Availability

See the Camp Sites section below to find detailed booking availability.

Reserve

Season dates

Peak season

May 22, 2027 – Sep 15, 2027

Reservable online

Peak season

May 22, 2028 – Sep 15, 2028

Reservable online

Camp Sites

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