- California51 objects
- North America51 objects
- The Americas51 objects
- United States51 objects
- CA-CCo-138, Oakley, Contra Costa County40 objects
- Contra Costa County, California40 objects
- Oakley, Contra Costa County, California40 objects
- San Francisco Bay Area, California40 objects
- CA-Sac-59, Sacramento County, California7 objects
- North Central California7 objects
- Northern California7 objects
- Sacramento County, California7 objects
- CA-Sta-27 (Blewett Mound), Stanislaus County, California4 objects
- Central California4 objects
- South Central California4 objects
- Stanislaus County, California4 objects