Public lands in Massachusetts

12 units whose boundary reaches Massachusetts. They are 11 national wildlife refuges and 1 wilderness area, largest first within each type.

National wildlife refuges: 23,329 acres
Wilderness areas: 3,244 acres

Each figure is the acreage inside Massachusetts 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 Massachusetts. 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

Silvio O. Conte National Fish and Wildlife Refuge

53,795 acres6 campgrounds near

Refuge · USFWS

Monomoy National Wildlife Refuge

7,939 acresNational Wildlife Refuge

Refuge · USFWS

Parker River National Wildlife Refuge

4,534 acresNational Wildlife Refuge

Refuge · USFWS

Great Meadows National Wildlife Refuge

3,883 acresNational Wildlife Refuge

Refuge · USFWS

Assabet River National Wildlife Refuge

2,385 acresNational Wildlife Refuge

Refuge · USFWS

Oxbow National Wildlife Refuge

1,701 acresNational Wildlife Refuge

Refuge · USFWS

Nomans Land Island National Wildlife Refuge

623 acresNational Wildlife Refuge

Refuge · USFWS

Mashpee National Wildlife Refuge

353 acresNational Wildlife Refuge

Refuge · USFWS

Massasoit National Wildlife Refuge

206 acresNational Wildlife Refuge

Refuge · USFWS

Nantucket National Wildlife Refuge

20 acresNational Wildlife Refuge

Refuge · USFWS

Thacher Island National Wildlife Refuge

17 acresNational Wildlife Refuge

Wilderness areas

All wilderness areas →

Wilderness · USFWS

Monomoy Wilderness

3,244 acresWilderness

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