Public lands in Montana
44 units whose boundary reaches Montana. They are 19 national wildlife refuges, 15 wilderness areas, 8 national forests and grasslands and 2 BLM national monuments and conservation areas, largest first within each type.
Acreage in Montana
- National wildlife refuges
- 1,181,955 acres
- Wilderness areas
- 3,500,159 acres
- National forests and grasslands
- 19,186,433 acres
- BLM national monuments and conservation areas
- 507,124 acres
Each figure is the acreage inside Montana 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 Montana. Wilderness often lies inside one of the other kinds, so the figures overlap and should not be added together.
National wildlife refuges
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Wilderness areas
National forests and grasslands
BLM national monuments and conservation areas
Boundaries come from the agencies’ own layers. A unit is listed in every state or territory its boundary reaches. Data refreshed November 1, 2026.