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Buttermilk Campground in Idaho
Moderate to BookNational Forest

Buttermilk Campground

Caribou-Targhee National Forest, Idaho

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As of October 2026, Buttermilk Campground is a campground in Caribou-Targhee National Forest, Idaho with 21 campsites. Buttermilk Campground is booked through Recreation.gov.

  • PermitSnag checks Buttermilk Campground for availability and tells alert holders when a site opens up.
  • Buttermilk Campground is located at 44.4325ยฐ N, 111.4261ยฐ W.
people allowed on 17 of 21 sites
8
people allowed on the largest site
150

Buttermilk Campground reservations and next available dates

October 2026

open, tap to book on Recreation.govsold outin your alert

Stay and booking rules

  • Maximum consecutive stay: 14 consecutive nights
  • Maximum stay: 14 nights

Published by Recreation.gov for Buttermilk Campground, read on September 30, 2026.

Campsites at Buttermilk Campground

  • Standard 20
  • Group 1
  • Hookups 2

What an RV fits

  • 45 ft15 sites
  • 50 ft6 sites

Amenities

  • restrooms
  • potable water

At a glance: Setting: Forest ยท Access: Paved road.

Things to do: fishing, boating, hiking, wildlife, photography, offroad, horse riding.

All sites at Buttermilk Campground, as listed by Recreation.gov

SiteLoopTypeSleepsMax RVHookups
027BStandard845 ft-
028BStandard850 ft-
029BStandard845 ft-
030BStandard845 ft-
031BStandard845 ft-
032BStandard845 ft-
033BStandard845 ft-
034BStandard845 ft-
035BStandard1650 ft-
036BStandard845 ft-
037BStandard1650 ft-
038BStandard850 ftElectric, Water
039BStandard845 ft-
040BStandard1650 ft-
041BStandard845 ft-
042BStandard845 ft-
043BStandard845 ft-
044BStandard845 ft-
045BStandard845 ft-
046BStandard845 ft-
GS1BUTTERMILKGroup15050 ftWater

About Buttermilk Campground

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.

Rules and notices at Buttermilk Campground

Recreation.gov does not date these notices. We last read them on September 30, 2026. Check Buttermilk Campground on Recreation.gov

Notices from Recreation.gov

Wildlife Caution

Idaho OHV Safety Message

A $7 fee for each extra vehicle 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.

Buttermilk Campground FAQ

How hard is it to get a campsite at Buttermilk Campground?

Buttermilk Campground is rated "Moderate to Book" based on historical demand. With 21 sites available, you have good chances of finding availability, especially on weekdays.

How do I find last-minute availability at Buttermilk Campground?

Cancellations happen frequently at Buttermilk Campground, especially 1-2 weeks before check-in dates. PermitSnag monitors availability 24/7 and sends instant alerts when sites open up due to cancellations. This is often the best way to snag popular campsites.

How many campsites does Buttermilk Campground have?

Buttermilk Campground has 21 campsites.

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