- Oregon, Oregon, United States, (Administrative Boundary)5
- Willamette Valley, Oregon, United States, (Hypsographic)4
- Willamette River, Oregon, United States, (Hydrographic)3
- H J Andrews Experimental Forest, Oregon, United States, (Vegetation)2
- Puget Sound, Kitsap County, Washington, United States2
- Alsea Bay, Oregon, United States, (Hydrographic)1
- Ashland, Oregon, United States, (Populated Place)1
- Astoria, Oregon, United States, (Populated Place)1
- Bridgeport, Town of Bridgeport, Fairfield County, Connecticut, United States1
- Burial Lake, Alaska, United States, (Hydrographic)1
- Canaan, Town of North Canaan, Litchfield County, Connecticut, United States1
- Cape Arago, Coos County, Oregon, United States1
- Carbon, Wyoming, United States, (Administrative Boundary)1
- Cascade Range, Oregon, United States, (Hypsographic)1
- Champoeg, Oregon, United States, (Populated Place)1
- City of Corvallis, Oregon, United States, (Administrative Boundary)1
- City of Unalaska, Alaska, United States1
- Coachella Valley, California, United States, (Populated Place)1
- Coos Bay Estuary, Oregon, United States, (Hydrographic)1
- Coos, Oregon, United States, (Administrative Boundary)1