U.S. Forest Service · Sawtooth National Forest · Idaho

Mill Flat Campground

Mill Flat Campground is a developed campground composed of 7 individual units located in an open setting within a canyon. This is a non-fee campground and picnic area where reservations are not required. This area is accessible for a season that varies usually between June through October. Campground amenities include restrooms. The campground is well suited for trailer and tent camping. Visitors can fish for trout in the stream and explore the mountains canyon by canyon on the extensive trail system.

Open nowBooking not publishedFreeTents only

More like this: first-come in Idaho · free in Idaho · tent only in Idaho

1fire
active
Stinson Creek Rx 2026 (prescribed burn) · 37 mi away · 450 acres
Interagency incident data as of 2026-10-26
Incident details ↓

Amenities & rules

EquipmentTents
FeesNo Fee

Individual sites vary. Confirm on Recreation.gov or with the managing office.

Season & status

StatusOpen
SeasonJune
ForestSawtooth National Forest
FeesNo Fee
RulesOccupancy: The following act is prohibited within the Minidoka Ranger District: Pursuant to 36 CFR 262.58 (a), camping in any area including a developed recreation site or an undeveloped/dispersed recreation site for more than 14 (fourteen) days in a 28 (twenty-eight) day period.

Sawtooth National Forest recreation page ↗

Weather by month

NOAA climate normals →
Weather by month near Mill Flat Campground20°30°40°50°60°70°80°January: 1.48 inches of precipitationFebruary: 1.05 inches of precipitationMarch: 1.32 inches of precipitationApril: 1.62 inches of precipitationMay: 1.56 inches of precipitationJune: 1.00 inches of precipitationJuly: 0.45 inches of precipitationAugust: 0.58 inches of precipitationSeptember: 0.88 inches of precipitationOctober: 1.07 inches of precipitationNovember: 1.13 inches of precipitationDecember: 1.35 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 26.0°F averageFebruary: 30.1°F averageMarch: 39.2°F averageApril: 45.7°F averageMay: 53.7°F averageJune: 62.1°F averageJuly: 70.9°F averageAugust: 70.0°F averageSeptember: 60.1°F averageOctober: 48.0°F averageNovember: 35.4°F averageDecember: 26.3°F average0 in0.5 in1 in1.5 in2 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Massacre Rocks Sp, 16 miles from the campground at 4,195 feet, station USC00105678 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 13 inches a year.

Getting there

Coordinates42.4300° N, 113.0138° W · Directions ↗

Fire nearby

  • Prescribed
    Stinson Creek Rx 2026

    37 mi from the campground · 450 acres

Distance is to the reported incident point, not the fire edge. Call the managing office before you drive.

Supplies & services

Outdoor gearPocatello Running Company ↗41.3 mi

Locations © OpenStreetMap contributors. Call ahead; hours change seasonally.

Explore

Trails nearby

Forest Service trail data →
  • 0.1 mi
    North Heglar Canyon
    3 mi trail · snowmobile, snowshoe, ski
  • 0.1 mi
    Indian Fork
    4.4 mi trail · hiking, horse, bike, motorcycle and 2 more
  • 0.2 mi
    Sheep Canyon ↗
    7.2 mi trail · snowmobile, snowshoe, ski
  • 0.2 mi
    Mill Flat ATV
    1.4 mi trail · hiking, horse, bike, motorcycle and 2 more
  • 0.3 mi
    Spring Canyon
    0.4 mi trail · hiking, horse, bike, motorcycle and 2 more
  • 0.7 mi
    Houltz Canyon ↗
    5.1 mi trail · snowmobile, snowshoe, ski

Trail and trailhead records are the Forest Service's. Distances are straight-line to the nearer trail end. Trail conditions are not tracked here.

Guidebooks for Idaho

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Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How much does it cost to camp at Mill Flat Campground?

Nothing. Mill Flat Campground is listed as free. No Fee

Source: Forest Service

Is Mill Flat Campground open right now?

Open as of Oct 26, 2026. Season June.

Source: Forest Service status

Can I bring an RV to Mill Flat Campground?

Mill Flat Campground is listed for tents only.

Source: Forest Service

What if Mill Flat Campground is full?

The nearest public campgrounds are Sublett Campground (7.1 mi, first-come), Mcclendon Spring Campground (21.1 mi, first-come), and Pipeline Campground (22.2 mi, first-come).

Source: Campgrounds nearby