Mill Flat Campground
Its sites are first-come, first-served (no reservations), and camping is free. Mill Flat Campground is a National Forest campground near Cassia, Idaho.
First-come, first-served
- National Forest
- Managed by
Mill Flat Campground sits inside Sawtooth National Forest. Its dispersed-camping rule, ranger offices, and boundary are on publiclandsdb.com.
Getting a site
- Managed by
- National Forest
- Reservations
- None, first-come
- Fee
- Free
Source: apps.fs.usda.gov, accessed 2026-09-30
What's there
- ✓ Toilets
On site: Toilets.
Access and cell service
- Elevation
- 5,940 ft
42.4301, -113.0127 in Cassia. Open in OpenStreetMap. Map © OpenStreetMap contributors.
Common questions
Do you need a reservation at Mill Flat Campground?
No. Mill Flat Campground is first-come, first-served: there is no reservation system, so arrive early to claim an open site.
How much does it cost to camp at Mill Flat Campground?
Camping at Mill Flat Campground is free.
Who manages Mill Flat Campground?
Mill Flat Campground is managed by the U.S. Forest Service.
Around Mill Flat Campground
American Falls Reservoir's mapped center point is 25 miles from Mill Flat Campground in a straight line. Current water level: American Falls Reservoir water level on reservoirfinder.com.
More campgrounds: camping near Cassia and campgrounds in Cassia.
Sources
- apps.fs.usda.gov (all fields), accessed 2026-09-30
- epqs.nationalmap.gov (elevationFt), accessed 2026-10-01