- California9 objects
- North America9 objects
- The Americas9 objects
- United States9 objects
- North Central California4 objects
- Northern California4 objects
- Sacramento County, California4 objects
- CA-CCo-138, Oakley, Contra Costa County3 objects
- CA-Sac-126 (Booth Mound), Sacramento County, California3 objects
- Contra Costa County, California3 objects
- Oakley, Contra Costa County, California3 objects
- San Francisco Bay Area, California3 objects
- CA-Sac-107 (Windmiller Mound), Sacramento County, California1 objects