Openings · last 7 days
2
Availability is not tracked here yet
Campsite Sniper does not currently hold availability data for Buttermilk. That is a gap in what Campsite Sniper tracks — it does not mean the facility is full, closed, or unavailable. Recreation.gov may well be showing open dates right now.
The site details and map below come from the public Recreation.gov record and are accurate. For current dates and to book, go to Recreation.gov.
Booking reality
Campsite Sniper detected 2 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-233826
When Buttermilk reopens
Buttermilk's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
4
Openings · last 90 days
5
Only 5 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
About Buttermilk
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.
21 monitored sitesRVs up to 50 ft2 with hookups19 shadedPets OKFire pitsMax party 150
Getting there
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.
Buttermilk Loop Rd, Island Park, ID 83429208-558-7658 OR 208-270-0094
BikingBoatingCampingFishingHikingHuntingWater SportsWildlife Viewing
View on Recreation.gov ↗ Get directions ↗
02 · Field Photos · roll CS-233826 · facility
Photo gallery
Roll CS-233826 · Buttermilk · Island Park ID6 frames · facility
FAQ
How do I get a reservation at Buttermilk?
Online reservations for this facility, where offered, are made through Recreation.gov. Campsite Sniper has also detected 5 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper does not currently hold availability data for Buttermilk, so there is nothing to date here. That is a gap in coverage — it does not mean the facility is full or closed. Check Recreation.gov for current dates.
How often do new openings appear at Buttermilk?
Campsite Sniper detected 2 site-date openings at Buttermilk in the last 7 days, 4 over 30 days and 5 over the last 90.
Which sites at Buttermilk fit a 35-foot RV?
21 of the 21 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 50 ft.
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