- North America81 objects
- The Americas81 objects
- United States81 objects
- California47 objects
- Southern California46 objects
- Churchill County, Nevada34 objects
- Nevada34 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada18 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada16 objects
- San Diego County, California15 objects
- Santa Barbara County, California11 objects
- Riverside County, California8 objects
- CA-SBa-525, Santa Barbara County, California7 objects
- Valley Center (CDP), San Diego County, California7 objects
- Peninsular Ranges, Riverside County, California4 objects
- Santa Barbara Canyon, Santa Barbara County, California4 objects
- Los Angeles County, California3 objects
- Mesa Grande, San Diego County, California3 objects
- Saboba Indian Reservation, Riverside County, California3 objects
- San Jacinto Reservation, Riverside County, California3 objects