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Camping · Idaho

BUTTERMILK

Campground · Fee

Fast facts

Cost
Fee charged
Type
Campground
Phone
208-558-7658 OR 208-270-0094
Coordinates
44.4325, -111.4261
Last verified
September 19, 2026
44.4325° N · 111.4261° W
Last verifiedSeptember 19, 2026

About this place

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.

From the managing agency.

Is BUTTERMILK free?

No. BUTTERMILK charges a fee.

How do I get to BUTTERMILK?

BUTTERMILK is at 44.4325, -111.4261. We do not hold written directions for this one, so navigate to the coordinates.

Nearby

No other services within 50 mi on the record.

SourceSource data is agency published. Last synced September 19, 2026. Community reports and photos are submitted by travelers and are not verified by the agency.

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Disclaimer TerrainKit is an independent product with no affiliation with, sponsorship from or endorsement by the U.S. Forest Service, the Bureau of Land Management, the National Park Service or any other public agency. Site and access information is compiled from publicly available sources and can go out of date without notice. Confirm current rules, closures, fire restrictions and stay limits with the managing ranger district or field office before you camp.
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47.5053° N · 111.3008° W
BUTTERMILK, Camping in Idaho - TerrainKit