Summary Fact Sheet

The National Wilderness Preservation System currently contains 765 wilderness areas comprising 109,142,230 acres.
National Wilderness Preservation System
Agency Units Federal
Acreage
Percentage
Bureau of Land Management 224 8,764,073 8.03%
Fish and Wildlife Service 71 19,862,488 18.20%
Forest Service 445 36,573,108 33.51%
National Park Service 61 43,942,561 40.26%

Total 801* 109,142,230

* Wilderness areas that are managed by more than one agency are counted as a unit by each agency.

Continental United States, Hawaii, Puerto Rico
Agency Units Federal
Acreage
Percentage
Bureau of Land Management 224 8,764,073 16.67%
Fish and Wildlife Service 50 2,009,873 3.82%
Forest Service 426 30,832,580 58.65%
National Park Service 53 10,963,155 20.85%

Total 753 52,569,681

Alaska
Agency Units Federal
Acreage
Percentage
Fish and Wildlife Service 21 17,852,615 31.56%
Forest Service 19 5,740,528 10.15%
National Park Service 8 32,979,406 58.30%

Total 48 56,572,549

Data last updated on 10/15/17 (349 acres added to the Kimberling Creek Wilderness (correction to add acreage from 2014)).