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RVParks.com lists RV parks and campgrounds across the United States. Bookings are completed on each park's or partner's own site; we may earn a commission from partner links. Availability and prices come from partner feeds, can change at any time, and should be confirmed when you book.

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Quick facts

LocationIsland Park, Idaho
Nightly rate (listed)$25–$100/night
Guest rating5.0 / 5 (86 reviews)
Maximum RV length50 ft (longest listed site)
Hookupswater, electric
Electrical service15A
Pull-through sitesYes
RV sites21
Pets allowedYes
Book onRecreation.gov

Amenities

  • Big rigs Big-rig friendly: the longest listed site is 50 ft. Check your site's length when you book.
  • Pull-through Pull-through sites, per the listing.
  • Pets allowed Pets allowed, per the listing. Restrictions may apply.
  • Public land Public campground: National Forest (USFS).

From the park's listing on Recreation.gov. Confirm details with the park before you book.

More Idaho RV parks with: Pull-Through Sites · Big Rig Sites

Other RV parks near Buttermilk

  • Mccrea Bridge Island Park, ID · 2.4 mi straight-line
  • Angell Creek Campground Island Park, ID · 2.5 mi straight-line
  • Buffalo (Idaho) Island Park, ID · 2.9 mi straight-line
  • Upper Coffee Pot Island Park, ID · 5 mi straight-line
  • Henry's Fork RV Park Island Park, ID · 5.2 mi straight-line
  • Flat Rock (Idaho) Island Park, ID · 6.2 mi straight-line
  • Yellowstone RV Park at Macks Inn Island Park, ID · 6.3 mi straight-line
  • Big Springs Warming Hut Island Park, ID · 7.2 mi straight-line
  1. Home
  2. Idaho
  3. Island Park
  4. Buttermilk
Build around it

Things to do near Island Park

All activities →
Sightseeing & food

Private Yellowstone Tour: ICONIC Sites, Wildlife, Family Friendly Hikes + lunch

5.0 (1,000)

Where Buttermilk fits

Nearest alternatives
Mccrea Bridge (2.4 mi) · Angell Creek Campground (2.5 mi) · Buffalo (Idaho) (2.9 mi)

Buttermilk is sold out for your dates — nearest alternatives

Closest stays by type. Distances are straight-line from Buttermilk, not driving.

  • Closest private full-hookupRed Rock RV Park11.9 mi away (straight-line) · PrivateAvailable for your datesBark'N Stay Premier Back-In RV Site: from $135/nightCheck availability on Campspot ↗
  • Next closestAngell Creek Campground2.5 mi away (straight-line) · PrivateAvailable for your dates#1-Angell Creek Campsite: from $35/nightCheck availability on Hipcamp ↗

Not confirmed open for your dates

  • Closest public campgroundBig Springs Grp. Area - Island Park9.5 mi away (straight-line) · PublicCheck availabilityCheck availability on Recreation.gov ↗

Other stays nearby

Available Oct 30 – Nov 1 · 2 nights4 sites open for every night

Angell Creek Campground

2.5 mi from Buttermilk (straight-line)
RV sites w/ hookups
Sites from $35/night
$70 total for Oct 30 – Nov 1 · before taxes & fees
Rates & availability from Hipcamp · you book on their site
View Campsites
Available Oct 30 – Nov 1 · 2 nights4 sites open for every night

Henry's Fork RV Park

5.2 mi from Buttermilk (straight-line) 4.5 · 10 Campspot reviews
Tent sites · RV sites w/ hookups
Sites from $85/night
$170 total for Oct 30 – Nov 1 · before taxes & fees
Rates & availability from Campspot · you book on their site
View Campsites
Check dates on Campspot

Yellowstone RV Park at Macks Inn

6.3 mi from Buttermilk (straight-line) 4.8 · 91 Campspot reviews
Tent sites · Full-hookup RV sites · Cabins / glamping
Check dates on Campspot
Rates & availability from Campspot · you book on their site
View Campsites

Buttermilk

Private campground · Island Park

This weekend · Not yet releasedRecreation.gov hasn't opened these dates yet

5.0 on Recreation.gov · 86 reviewsBook on Recreation.gov
BUTTERMILK LOOP RD
Saving doesn't reserve a site.
SitesAmenitiesReviewsLocationPolicies

About this campground

Buttermilk is a Recreation.gov campground in Island Park. It lists 21 RV or RV/tent sites for rigs up to 50 ft. 1 site has electric. Pets are allowed per the listing.

Highlights

  • Electric sitesElectric hookups available
  • Rigs up to 50 ftLongest RV site on the Recreation.gov site list
  • Pets allowedListed on Recreation.gov

Good for

Big rigs (up to 50 ft)Tent campingDogs

Know before you go

  • Longest listed RV site is 50 ft; individual sites vary, so check the site length when booking.
  • You book directly with Recreation.gov; prices and availability can change until booked.
All amenities

Nearby activities

Wildlife ViewingWater SportsHuntingHikingFishingCampingBoatingBiking

Find your campsite

Checking 2 nights (your saved dates or this weekend). Tell us what you're staying in to see matching sites and prices.

Every site at this campground

Availability checked Sep 15 on Recreation.gov. Rates are the provider's nightly rates; totals are estimates before taxes & fees.

0 open of 20 sites
Site 027 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 028 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 50 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 029 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 030 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 031 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 032 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 033 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night
Site 034 · Standard Nonelectric
B loopUp to 8 peopleSite length up to 45 ftNo hookups
Not available Oct 30–Nov 1
$25/night

Book with Recreation.gov

You book with the provider. Each row shows that provider's lowest open option for your dates, and which provider our main button uses.

Recreation.govMain booking button
Availability & rates from this provider, checked Sep 15
Unavailable for your dates
Book with Recreation.gov ↗
Pick your dates again on this provider's site.
View full availability calendar · night-by-night from Recreation.gov

No recent availability data on Recreation.gov: this grid may be out of date, so check availability with the provider.

SiteFr
30
Sa
31
Price
031
standard nonelectric
––$25
029
standard nonelectric
––$25
036
standard nonelectric
––$25
043
standard nonelectric
––$25
041
standard nonelectric
––$25
042
standard nonelectric
––$25
045
standard nonelectric
––$25
044
standard nonelectric
––$25
033
standard nonelectric
––$25
034
standard nonelectric

What guests say

Verbatim from guest reviews on Recreation.gov ↗ (86 reviews, ★ 5.0). Not written or edited by us.

“It was such a fun experience! The camp host was great and very accomodating. We enjoyed going to Yellowstone and seeing Old Faithful. ”

Lissette E 5 · Oct 2025 · Recreation.gov

“This was our first year staying at this campground were very pleased with the area it was clean, and the bathrooms were also clean every day. The camp host were very nice and helpful with any questions we had. we will be using the area again. ”

Stanley W 5 · Aug 2025 · Recreation.gov

Location & access

This weekend (Fri, Oct 30 – Sun, Nov 1): Book online. Reservations online on Recreation.gov — open dates and rates come from the booking site.

Longest RV site listed: 50 ft. Unsure if your rig fits? Check it in the Rig Fit tool

Location

BUTTERMILK LOOP RD
Open in Google Maps ↗

Policies

Check-in
0:00 AM
Check-out
0:00 AM
Max stay
14 nights
Pets
Allowed (per listing)
Campfires
Allowed (per listing)

About

Buttermilk Campground sits on the eastern edge of Island Park Reservoir at about 6,200 feet, roughly 30 miles south of West Yellowstone and a similar distance north of Ashton, Idaho. The sites are shaded intermittently by lodgepole pines and open grassy areas where summer wildflowers appear, and the surrounding landscape is shaped by the overlapping Henry's Fork and Island Park calderas. Anglers come for world-class water the Henry's Fork and nearby Henry's Lake produce rainbow, cutthroat and brook trout as well as kokanee, while Island Park Reservoir supports boating and water-skiing (the reservoir is used for irrigation and the level recedes during summer but is generally usable all season). Hikers, mountain bikers, horseback riders and ATV users will find many trails nearby, including access toward long routes such as the Continental Divide National Scenic Trail and the Nez Perce Trail; birdwatchers and wildlife viewers can expect to encounter moose, elk, bald eagles and Sandhill cranes in the area. The Big Springs float trip and the Mesa Falls Scenic Byway (about 13 miles south) are close enough for half-day excursions, and Yellowstone's west entrance is under an hour away for day trips. The campground is arranged with two single-family loops and a group loop and contains 21 campsites in total; all 21 are configured for both RVs and tents. A large group site is available and can accommodate up to 150 people, for which the posted fees are $65 per night Sunday Thursday and $130 per night Friday Saturday (no weekly rate). Basic amenities at Buttermilk include vault toilets, drinking water, and a concrete boat ramp with docks located between the group and single-family loops; access to the campground is on a paved road while interior loop roads and parking spurs are gravel. One site is noted to have a 15-amp electrical hookup. Because some details such as seasonal reservation availability and specific RV length limits can change, plan to check current Caribou-Targhee National Forest information before you go; the campground supports a wide range of activities boating, fishing, hiking, biking, horseback riding, OHV use, picnicking, swimming, wildlife viewing and winter sports making it a practical base for exploring Island Park and the Henry's Fork country.

Policies & rules

Key facts

Max rig length
Longest RV site listed: 50 ft (21 of 21 RV sites list a length) Listing
Hookups & power
1 electric site Listing
Pets
Allowed Listing
Booking
Reservable on Recreation.gov Listing
Getting there
BUTTERMILK LOOP RD (map in Location below) Listing
All 15 facts with sources ↓
Why stay here and common questions

Why stay here?

  • RV sites listed for rigs up to 50 ft.
  • Rated 5.0★ across 86 Recreation.gov reviews.
  • Public-land campground run by a federal or state agency.

Buttermilk: questions answered

What is the maximum RV length at Buttermilk?
Longest RV site listed: 50 ft (21 of 21 RV sites list a length) (per the listing)
Does Buttermilk have RV hookups?
1 electric site (per the listing)
How do I reserve a site at Buttermilk?
Reservable on Recreation.gov (per the listing)
Are pets allowed at Buttermilk?
Allowed (per the listing)
At a glance: all 15 facts with sources

Quick facts

Agency / operatorNot listed
BookingRecreation.gov [Recreation.gov]
Max RV / trailer lengthNot listed
Bear storageNot listed
Unavailable for your dates

View campground on Recreation.gov ↗

Availability checked Sep 15 on Recreation.gov.

You book each site directly with Recreation.gov. Prices and availability can change until booked.

Sold out
7 hr–9 hr
Free cancellation
from $2,200Continue to Viator
Sightseeing & food

Lower Loop Van Tour from West Yellowstone: Grand Prismatic and Old Faithful

4.9 (478) 8 hrFree cancellation
from $248Continue to Viator
Sightseeing & food

Yellowstone National Park - Full-Day Lower Loop Tour from West Yellowstone

4.9 (261) 8 hr–9 hrFree cancellation
from $325Continue to Viator
Sightseeing & food

Full Day Private Tour and Hike from West Yellowstone

5.0 (196) 6 hr–8 hrFree cancellation
from $851Continue to Viator
Add an RV

RVs near this campground

Picks are 50 ft or shorter: the longest RV site listed here. Pickup area: Bozeman (Bozeman Yellowstone International (BZN)), about 94 mi straight-line from Buttermilk. RV rentals in Bozeman

All RV rentals near Buttermilk →
Pick up in Gallatin Gateway

2022 Braxton Creek Bushwhacker

Travel trailerTowableSleeps 2 5 (4)
Gallatin Gateway, MT · 12 mi from Bozeman (straight-line)
Towable — needs tow vehicle or deliveryPets OK
to see if it's open
from $75/nightvia Outdoorsy
Pick up in Bozeman

2025 AWD Subaru Crosstrek Wilderness With Rooftop Tent - Gear Included

Truck camperSleeps 2
Bozeman, MT · 8 mi from Bozeman (straight-line)
Drivable — no tow vehicleDelivery up to 25 mi
Pick up in Bozeman

2023 4WD Toyota Tacoma With A 2023 Kimbo Camper - Fully Camping Ready

Truck camperSleeps 2 5 (6)
Bozeman, MT · 8 mi from Bozeman (straight-line)
Drivable — no tow vehicleDelivery up to 20 mi
–
–
$25
032
standard nonelectric
––$25
039
standard nonelectric
––$25
028
standard nonelectric
––$25
046
standard nonelectric
––$25
027
standard nonelectric
––$25
030
standard nonelectric
––$25
038
standard electric
––$32
035
standard nonelectric
––$50
040
standard nonelectric
––$50
037
standard nonelectric
––$50
GS1
group standard nonelectric
––$100

✓ available · R reserved · X not available · C closed · W first come, first served · N not yet released

Season
Not listed
HookupsNot listed
Max stay14 nights max

Sources: Recreation.gov — Buttermilk. "Not listed" means no source we use states it.

At a glance

Official facts link to their source; “Listing” facts come from the Recreation.gov listing. Anything we can't source says so.

Max rig length
Listing Longest RV site listed: 50 ft (21 of 21 RV sites list a length)
Hookups & power
Listing 1 electric site
Pull-through / back-in
Listing 14 pull-through, 6 back-in
Road & site access
Listing 21 gravel site driveways
Pets
Listing Allowed
Cell signal
Listing Visitor-reported signal on Recreation.gov (higher is better): Verizon 2 (38 reports), AT&T 3 (18 reports), T-Mobile 2 (17 reports)
Water
Listing Water at 2 sites
Shade
Listing 19 of 19 sites that report shade are listed as shaded
Booking
Listing Reservable on Recreation.gov
Price
Listing Lowest listed rate $25/night (live price once you pick dates)
Stay limits
Listing 14 nights max
Getting there
Listing BUTTERMILK LOOP RD (map in Location below)
Generators · Quiet hours · Starlink / satellite
Not listed — check with campground
to see if it's open
from $199/nightvia Outdoorsy
to see if it's open
from $249/nightvia Outdoorsy