- California7 objects
- North America7 objects
- The Americas7 objects
- United States7 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California6 objects
- CA-Sac-6, Sacramento County, California6 objects
- North Central California6 objects
- Northern California6 objects
- Sacramento County, California6 objects
- CA-CCo-138, Oakley, Contra Costa County1 objects
- Contra Costa County, California1 objects
- Oakley, Contra Costa County, California1 objects
- San Francisco Bay Area, California1 objects