- CA-Sac-188, Sacramento County, California145 objects
- CA-Lak-36 (Borax Lake site), Lake County, California114 objects
- Yolo County, California114 objects
- CA-Sac-95 (Allyn Mound 2), Sacramento County, California101 objects
- Walnut Grove (CDP), Sacramento County, California99 objects
- CA-Col-3 (Sandhill site), Colusa County, California80 objects
- CA-Sac-106 (Costello site), Sacramento County, California79 objects
- CA-Sac-75, Walnut Grove, Sacramento County75 objects
- CA-Sac-73, Sacramento County, California65 objects
- Capay Valley, Yolo County, California59 objects
- CA-Sac-96 (Allyn site), Sacramento County, California54 objects
- Cobbey Canyon, Capay Valley, Yolo County54 objects
- CA-Sac-52 (Snyder Mound), Sacramento County, California49 objects
- Sacramento River, Sacramento County, California48 objects
- CA-Sac-28 (Strawberry Mound), Sacramento, Sacramento County43 objects
- CA-Sac-160 (Richards site), Sacramento County, California42 objects
- CA-SJo-143, San Joaquin County, California41 objects
- CA-Sac-54, Sacramento County, California36 objects
- CA-Yol-3, Yolo County, California35 objects
- CA-Sac-1, Sacramento County, California32 objects