- California14 objects
- North America14 objects
- The Americas14 objects
- United States14 objects
- Northern California9 objects
- CA-Sac-21 (Hollister Mound), Sacramento County, California7 objects
- North Central California7 objects
- Sacramento County, California7 objects
- CA-CCo-138, Oakley, Contra Costa County5 objects
- Contra Costa County, California5 objects
- Oakley, Contra Costa County, California5 objects
- San Francisco Bay Area, California5 objects
- Amador County, California2 objects
- CA-Ama-3 (Bamert Cave), Amador County, California2 objects
- Northeastern California2 objects
- Northern Sierras, Northern California2 objects