Public lands in Colorado
65 units whose boundary reaches Colorado. They are 8 national wildlife refuges, 44 wilderness areas, 8 national forests and grasslands and 5 BLM national monuments and conservation areas, largest first within each type.
Acreage in Colorado
- National wildlife refuges
- 173,088 acres
- Wilderness areas
- 3,735,063 acres
- National forests and grasslands
- 17,194,323 acres
- BLM national monuments and conservation areas
- 606,977 acres
Each figure is the acreage inside Colorado 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 Colorado. Wilderness often lies inside one of the other kinds, so the figures overlap and should not be added together.
National wildlife refuges
Wilderness areas
Show 32 moreHide
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.