USFS · Campground · Fee
Buttermilk Campground is located approximately 30 miles southwest of West Yellowstone, Monta 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.
From the USFS.Official page
No. Buttermilk Campground charges a fee. It is managed by the USFS. Sites are reservable through recreation.gov.
From West Yellowstone, Monta 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.
No other services within 50 mi on the record.
SourceData from the USFS. Last synced September 18, 2026. Community reports and photos are submitted by travelers and are not verified by the agency.