Public lands in Idaho

33 units whose boundary reaches Idaho. They are 6 national wildlife refuges, 15 wilderness areas, 10 national forests and grasslands and 2 BLM national monuments and conservation areas, largest first within each type.

National wildlife refuges: 87,816 acres
Wilderness areas: 4,801,026 acres
National forests and grasslands: 21,747,410 acres
BLM national monuments and conservation areas: 1,353,382 acres

Each figure is the acreage inside Idaho for one kind of unit, summed over the units listed below. A unit that crosses into another state counts only the part of its boundary that lies in Idaho. Wilderness often lies inside one of the other kinds, so the figures overlap and should not be added together.

National wildlife refuges

All national wildlife refuges →

Refuge · USFWS

Minidoka National Wildlife Refuge

24,522 acresNational Wildlife Refuge

Refuge · USFWS

Grays Lake National Wildlife Refuge

20,125 acres2 campgrounds near

Refuge · USFWS

Bear Lake National Wildlife Refuge

18,273 acres7 campgrounds near

Refuge · USFWS

Deer Flat National Wildlife Refuge

11,576 acresAlso OR

Refuge · USFWS

Camas National Wildlife Refuge

10,794 acresNational Wildlife Refuge

Refuge · USFWS

Kootenai National Wildlife Refuge

2,774 acresNational Wildlife Refuge

Wilderness areas

All wilderness areas →

Wilderness · BLM, USFS

Frank Church-River of No Return Wilderness

2.4 million acres47 campgrounds near

Wilderness · USFS

Selway-Bitterroot Wilderness

1.3 million acres27 campgrounds near

Wilderness · BLM

Owyhee River Wilderness

266,390 acresWilderness

Wilderness · BLM, USFS

Hells Canyon Wilderness

217,747 acres15 campgrounds near

Wilderness · USFS

Sawtooth Wilderness

217,511 acres32 campgrounds near

Wilderness · USFS

Gospel-Hump Wilderness

205,395 acres11 campgrounds near

Wilderness · BLM, USFS

Jim McClure-Jerry Peak Wilderness

116,843 acres5 campgrounds near

Wilderness · BLM, USFS

Cecil D. Andrus-White Clouds Wilderness

90,776 acres20 campgrounds near

Wilderness · BLM

Bruneau-Jarbidge Rivers Wilderness

89,820 acres4 campgrounds near

Wilderness · USFS

Hemingway-Boulders Wilderness

67,993 acres9 campgrounds near

Wilderness · BLM

Big Jacks Creek Wilderness

52,753 acresWilderness

Wilderness · BLM

Little Jacks Creek Wilderness

50,930 acresWilderness

Show 3 more

Wilderness · BLM

North Fork Owyhee Wilderness

44,027 acres1 campground near

Wilderness · NPS

Craters of the Moon National Wilderness Area

43,243 acres1 campground near

Wilderness · BLM

Pole Creek Wilderness

12,556 acresWilderness

National forests and grasslands

All national forests and grasslands →

Salmon-Challis National Forest

4.4 million acres88 campgrounds near

Nez Perce-Clearwater National Forest

4.1 million acres52 campgrounds near

Caribou-Targhee National Forest

3.1 million acres88 campgrounds near

Idaho Panhandle National Forests

2.9 million acres63 campgrounds near

Kootenai National Forest

2.6 million acres30 campgrounds near

Boise National Forest

2.5 million acres102 campgrounds near

Wallowa-Whitman National Forest

2.5 million acres70 campgrounds near

Payette National Forest

2.4 million acres70 campgrounds near

Sawtooth National Forest

2.2 million acres86 campgrounds near

Bitterroot National Forest

1.7 million acres33 campgrounds near

BLM national monuments and conservation areas

All BLM national monuments and conservation areas →

Craters of the Moon National Monument and Preserve

752,333 acres2 campgrounds near

Morley Nelson Snake River Birds of Prey National Conservation Area

601,049 acresNational Conservation Area

Boundaries come from the agencies’ own layers. A unit is listed in every state or territory its boundary reaches. Data refreshed November 1, 2026.