- Solano County, California73 objects
- CA-Sac-99 (Deterding site), Carmichael (CDP), Sacramento County72 objects
- Carmichael (CDP), Sacramento County, California72 objects
- CA-Mrn-232 (Estero Mound), Drakes Bay, Marin County70 objects
- CA-Sac-21 (Hollister Mound), Sacramento County, California68 objects
- Peru68 objects
- Richmond, Contra Costa County, California67 objects
- CA-SCrI-100, Santa Cruz Island, Channel Islands64 objects
- CA-SCrI-3, Santa Cruz Island, Channel Islands63 objects
- El Sobrante, Contra Costa County, California62 objects
- Mexico62 objects
- CA-CCo-151, El Sobrante, Contra Costa County61 objects
- CA-Col-1 (Miller Mound), Colusa County, California61 objects
- CA-Nap-32, Napa Valley, Napa County61 objects
- CA-Yol-13 (Mustang Mound), Yolo County, California61 objects
- Humboldt County, California61 objects
- Rutherford area, Napa Valley, Napa County61 objects
- Africa60 objects
- CA-Nap-1 (Goddard Mound), Napa Valley, Napa County59 objects
- Oakville area, Napa Valley, Napa County59 objects