| 601 | 205 | Apr 2016 | Modjeska House | State | Orange | |
| 602 | 652 | Nov 2015 | Mojave 20-Mule Team Borax Terminus | State | Kern | |
| 603 | 963 | Apr 2016 | Mojave Road | None | Los Angeles | |
| 604 | 963.2 | Nov 2015 | Mojave Road - San Bernadino | State | San Bernadino | |
| 605 | 162 | Jul 2014 | Mokelumne City Site | Missing | San Joaquin | |
| 606 | 269 | Aug 2015 | Mokelumne Hill | Other | Calaveras | |
| 607 | 261 | Aug 2015 | Mokelumne Hill Congregational Church | None | Calaveras | |
| 608 | 256 | Aug 2015 | Mokelumne Hill IOOF Hall | None | Calaveras | |
| 609 | 122 | Jun 2015 | Montezuma | Other | Tuolumne | |
| 610 | 80 | Sep 2015 | Montgomery Block Site | State | San Francisco | |
| 611 | 813 | May 2015 | Montgomery Hill | State | Santa Clara | |
| 612 | 81 | Sep 2015 | Montgomery Landing Place | Other | San Francisco | |
| 613 | 711 | Feb 2015 | Montgomery Memorial | Other | San Diego | |
| 614 | 509 | Jul 2014 | Moraga Adobe | None | Contra Costa | |
| 615 | 489 | May 2015 | Moreland School | State | Santa Clara | |
| 616 | 323 | Apr 2015 | Mormon Bar | Other | Mariposa | |
| 617 | 569 | Mar 2015 | Mormon Island | Other | El Dorado | |
| 618 | 96 | Jul 2016 | Mormon Road | Other | San Bernadino | |
| 619 | 44 | Jul 2016 | Mormon Stockade | Other | San Bernadino | |
| 620 | 577 | Oct 2014 | Mormon Trail Monument | Other | San Bernadino | |
| 621 | 821 | Apr 2015 | Morro Rock | State | San Luis Obispo | |
| 622 | 1043 | Jun 2015 | Mother Orange Tree of Butte County | State | Butte | |
| 623 | 589 | Apr 2015 | Mountain House Station | State | Kern | |
| 624 | 1051.1 | Jun 2015 | Mountain Quarries Railroad Bridge | State | Placer | |
| 625 | 1051 | Jul 2015 | Mountain Quarries Railroad Bridge | State | El Dorado | |
| 626 | 194 | Jul 2016 | Mountain Springs Station | State | Imperial | |
| 627 | 905 | Jul 2014 | Mount Diablo | State | Contra Costa | |
| 628 | 932 | Jul 2014 | Mount Diablo Coal Field | State | Contra Costa | |
| 629 | 855 | Jul 2015 | Mount Saint Mary's Convent and Academy | State | Nevada | |
| 630 | 312 | Aug 2016 | Muir National Historic Site | State | Contra Costa | |
| 631 | 452 | Jun 2016 | Mule Hill | State | San Diego | |
| 632 | 644 | May 2015 | Murphy Estate Site | State | Santa Clara | |
| 633 | 275 | Aug 2015 | Murphys | Other | Calaveras | |
| 634 | 680 | Jul 2014 | Murphy's Ranch | State | Sacramento | |
| 635 | 245 | Jul 2014 | Mussel Slough Tragedy | State | Kings | |
| 636 | 834 | Jan 2015 | Muybridge and the Development of Motion Pictures Site | State | Santa Clara | |
| 637 | 687 | Jun 2015 | Napa Valley Railroad Depot | Other | Napa | |
| 638 | 667 | Apr 2014 | Nash Adobe | State | Sonoma | |
| 639 | 899 | Jul 2015 | National Exchange Hotel | State | Nevada | |
| 640 | 781 | Oct 2014 | National Old Trails Monument | State | San Bernadino | |
| 641 | 972 | Mar 2016 | Naval and Marine Corps Reserve Center | State | Los Angeles | |
| 642 | 570 | Mar 2015 | Negro Hill | Missing | El Dorado | |
| 643 | 863 | Jul 2015 | Nevada Theatre | State | Nevada | |
| 644 | 339 | May 2015 | New Almaden Quicksilver Mine | State | Santa Clara | |
| 645 | 592 | Jul 2014 | New Helvetia Cemetery | Other | Sacramento | |
| 646 | 436 | Oct 2014 | New Hope | State | San Joaquin | |
| 647 | 324 | Nov 2014 | New Idria Mine | State | San Benito | |
| 648 | 88 | Sep 2015 | Niantic Storeship Site | Other | San Francisco | |
| 649 | 900 | Jul 2014 | Nisipowinan Village Site | None | Sacramento | |
| 650 | 939.7 | Apr 2015 | Nitt Witt Ridge | State | San Luis Obispo | |
| 651 | 11 | Jul 2015 | Noble Pass Route | Other | Shasta | |
| 652 | 675 | Oct 2015 | Nobles Emigrant Trail (Susanville) | State | Lassen | |
| 653 | 677 | Oct 2015 | Nobles Emigrant Trail (Viewland) | State | Lassen | |
| 654 | 357 | Jul 2015 | Nomi Lackee Indian Reservation | Other | Tehama | |
| 655 | 417 | May 2015 | Normal School Site | State | Santa Clara | |
| 656 | 852 | Jul 2015 | North Bloomfield Mining and Gravel Company | State | Nevada | |
| 657 | 112 | Apr 2016 | North gate of city of Anaheim | Other | Orange | |
| 658 | 843 | Jul 2015 | North Star Mine Powerhouse | State | Nevada | |
| 659 | 144 | Mar 2016 | Nuestra Señora Reina de los Angeles | Other | Los Angeles | |
| 660 | 97 | Jan 2015 | Oak Creek Pass | State | Kern | |
| 661 | 502 | Jun 2016 | Oak Grove Butterfield Stage Station | State | San Diego | |
| 662 | 168 | May 2014 | Oak of the Golden Dream | State | Los Angeles | |
| 663 | 281 | Jun 2015 | O'Byrne Ferry | State | Calaveras | |
| 664 | 85 | Sep 2015 | Office of the California Star Newspaper Site | Other | San Francisco | |
| 665 | 249 | May 2015 | Old Adobe Woman's Club | State | Santa Clara | |
| 666 | 164 | Jul 2015 | Old Arrow Tree | Other | Humboldt | |
| 667 | 359 | Jun 2015 | Old Bale Grist Mill | Other | Napa | |
| 668 | 725 | Jul 2016 | Old Bear Valley Dam | State | San Bernadino | |
| 669 | 467 | Jun 2015 | Old Bull Trail Road and St. Helena Toll Road | State | Lake | |
| 670 | 58 | Jul 2015 | Old California Oregon Road | Other | Shasta | |
| 671 | 1 | Mar 2014 | Old Custom House | State | Monterey | |
| 672 | 661 | Apr 2015 | Old Emigrant Road | State | Alpine | |
| 673 | 662 | Apr 2015 | Old Emigrant Road, Silver Lake | State | Amador | |
| 674 | 111 | Oct 2015 | Old Emigrant Trail | Other | Modoc | |
| 675 | 210 | Jun 2015 | Oldest House North of San Francisco Bay, Camillo Ynitia Adobe | None | Marin | |
| 676 | 731 | May 2014 | Old Homestead | State | Contra Costa | |
| 677 | 838 | Jul 2015 | Old Indian Village of Tsurai | State | Humboldt | |
| 678 | 198 | Apr 2016 | Old Landing | Missing | Orange | |
| 679 | 61 | Sep 2014 | Old La Playa | State | San Diego | |
| 680 | 361 | Apr 2015 | Old Lobero Theatre | Missing | Santa Barbara | |
| 681 | 729 | Jun 2016 | Old Maizeland School | State | Orange | |
| 682 | 302 | Dec 2014 | Old Mill | Other | Los Angeles | |
| 683 | 465 | Aug 2015 | Old Mining Camp of Brownsville | State | Calaveras | |
| 684 | 114 | Aug 2014 | Old Mission Reservoir | Other | Ventura | |
| 685 | 837 | Apr 2014 | Old Orange County Courthouse | State | Orange | |
| 686 | 354 | Nov 2014 | Old Pacific House | None | Monterey | |
| 687 | 730 | Mar 2016 | Old Plaza Firehouse | State | Los Angeles | |
| 688 | 51 | Sep 2014 | Old Point Loma Lighthouse | State | San Diego | |
| 689 | 812 | Mar 2015 | Old Sacramento | State | Sacramento | |
| 690 | 810 | Sep 2015 | Old Saint Mary’s Church | State | San Francisco | |
| 691 | 373 | Apr 2016 | Old Salt Lake | Other | Los Angeles | |
| 692 | 854 | May 2015 | Old San Jose Post Office | State | Santa Clara | |
| 693 | 204 | Apr 2016 | Old Santa Ana | State | Orange | |
| 694 | 840 | Apr 2016 | Old Santa Monica Forestry Station | State | Los Angeles | |
| 695 | 632 | Jan 2016 | Old Short Cut | None | Los Angeles | |
| 696 | 343 | Oct 2015 | Old Store at La Honda | Other | San Mateo | |
| 697 | 826 | Nov 2015 | Old Stovepipe Wells | State | Inyo | |
| 698 | 314 | Jun 2015 | Old Suspension Bridge | State | Butte | |
| 699 | 638 | May 2016 | Old Temescal Road | State | Riverside | |
| 700 | 1004 | Apr 2016 | Old Town Irvine | Other | Orange | |
| 701 | 77 | Jul 2015 | Old Town of Shasta | State | Shasta | |
| 702 | 830 | Sep 2014 | Old Town San Diego | State | San Diego | |
| 703 | 939.5 | May 2015 | Old Trapper's Lodge | State | Los Angeles | |
| 704 | 875 | Mar 2017 | Old United States Mint | State | San Francisco | |
| 705 | 381 | Apr 2016 | Old Whaling Station | Other | Los Angeles | |
| 706 | 222 | Jun 2015 | Olema Lime Kilns | None | Marin | |
| 707 | 918 | Apr 2016 | Olinda | State | Orange | |
| 708 | 115 | Aug 2014 | Olivas Adobe | State | Ventura | |
| 709 | 629 | Jul 2015 | Omega Hydraulic Diggings | State | Nevada | |
| 710 | 463 | Aug 2014 | Ophir | State | Placer | |
| 711 | 807 | Jun 2015 | Oregon City | State | Butte | |
| 712 | 536 | Mar 2016 | Original building of the University of Southern California | State | Los Angeles | |
| 713 | 928 | Apr 2015 | Original Mission La Purísima (La Purisima) | State | Santa Barbara | |
| 714 | 772 | Sep 2015 | Original Site of Saint Mary's College Site | State | San Francisco | |
| 715 | 608 | Mar 2015 | Orleans Hotel Site | None | Sacramento | |
| 716 | 770 | Jun 2015 | Oroville Chinese Temple | State | Butte | |
| 717 | 451 | Apr 2016 | Ortega-Vigare Adobe | State | Los Angeles | |
| 718 | 909 | Apr 2015 | Our Lady of the Wayside | State | San Mateo | |
| 719 | 922 | Jun 2015 | Outdoor Art Club | State | Marin | |
| 720 | 799 | Jul 2015 | Overland Emigrant Trail | State | Nevada | |
| 721 | 799.2 | May 2015 | Overland Emigrant Trail - Placer | State | Placer | |
| 722 | 799.3 | Mar 2015 | Overland Emigrant Trail - Yuba | State | Yuba | |
| 723 | 610 | Mar 2015 | Overton Building | None | Sacramento | |
| 724 | 752 | Apr 2015 | Owens Lake Silver-Lead Furnace | State | Inyo | |
| 725 | 230 | Aug 2014 | Owensville | Other | Inyo | |
| 726 | 455 | May 2014 | Pacheco (Don Fernando) Adobe | Other | Contra Costa | |
| 727 | 515 | May 2017 | Pacheco (Don Salvio) Adobe | Other | Contra Costa | |
| 728 | 829 | Jun 2014 | Pacheco Pass | State | Merced | |
| 729 | 988 | Dec 2014 | Pacific Asia Museum | State | Los Angeles | |
| 730 | 190 | May 2016 | Painted Rock | None | Riverside | |
| 731 | 639 | Oct 2016 | Palm Springs | State | San Diego | |
| 732 | 295 | Aug 2015 | Paloma | State | Calaveras | |
| 733 | 681 | Apr 2016 | Paradox Hybrid Walnut Tree | Other | Los Angeles | |
| 734 | 884 | Jul 2014 | Paramount Theatre | State | Alameda | |
| 735 | 1027 | Jul 2014 | Pardee Home | Other | Alameda | |
| 736 | 20 | Aug 2015 | Parent Washington Navel Orange Tree | Other | Riverside | |
| 737 | 89 | Sep 2015 | Parrott Granite Block Site | None | San Francisco | |
| 738 | 438 | Jun 2015 | Parrott's Ferry | State | Tuolumne | |
| 739 | 887 | Dec 2014 | Pasadena Playhouse | State | Los Angeles | |
| 740 | 448 | Sep 2015 | Patchen | State | Santa Clara | |
| 741 | 733 | May 2015 | Paul Masson Mountain Winery | State | Santa Clara | |
| 742 | 858 | Jun 2016 | Pedro Fages Trail | State | San Diego | |
| 743 | 750 | Oct 2016 | Peg Leg Smith Monument | State | San Diego | |
| 744 | 1012 | Jul 2015 | Pelton Wheel Manufacturing Site | State | Nevada | |
| 745 | 534 | May 2014 | Peña Adobe | State | Solano | |
| 746 | 866 | May 2015 | Peralta Adobe | State | Santa Clara | |
| 747 | 925 | Jan 2015 | Peralta (Antonio) Hacienda | Other | Alameda | |
| 748 | 285 | Jan 2015 | Peralta (Ygnacio) House | State | Alameda | |
| 749 | 18 | Apr 2014 | Petaluma Adobe | State | Sonoma | |
| 750 | 466 | Aug 2015 | Peter L. Traver Building | State | Calaveras | |
| 751 | 915 | Jun 2015 | Petrified Forest | State | Sonoma | |
| 752 | 193 | Jul 2016 | Picacho Mines | State | Imperial | |
| 753 | 159 | Mar 2016 | Pico House | Other | Los Angeles | |
| 754 | 986 | Jul 2014 | Piedmont Way | State | Alameda | |
| 755 | 930 | Oct 2015 | Pigeon Point Lighthouse | State | San Mateo | |
| 756 | 377 | Jul 2015 | Pioneer Baby's Grave | State | Shasta | |
| 757 | 271 | Aug 2015 | Pioneer Cemetery | None | Calaveras | |
| 758 | 836 | Jan 2015 | Pioneer Electronics Research Laboratory | State | Santa Clara | |
| 759 | 585 | Mar 2015 | Pioneer Express Trail | State | Placer | |
| 760 | 612 | Jul 2014 | Pioneer Firehouse Site | None | Sacramento | |
| 761 | 212 | Oct 2015 | Pioneer Grave | Other | Plumas | |
| 762 | 34 | Jun 2015 | Pioneer Hall | Other | Amador | |
| 763 | 201 | Apr 2016 | Pioneer House of the Mother Colony | State | Orange | |
| 764 | 378 | Apr 2015 | Pioneer Odd Fellows | Other | Alpine | |
| 765 | 172 | May 2014 | Pioneer Oil Refinery | State | Los Angeles | |
| 766 | 552 | Jun 2015 | Pioneer Paper Mill | State | Marin | |
| 767 | 625 | Oct 2015 | Pioneer School House | Other | Plumas | |
| 768 | 724 | May 2015 | Pioneer Ski Area of America, Squaw Valley | State | Placer | |
| 769 | 645 | Jul 2015 | Pioneer Stage Road to Oregon | State | Del Norte | |
| 770 | 865 | Jun 2015 | Pioneer Synagogue Site | State | Amador | |
| 771 | 366 | Mar 2015 | Pioneer Telegraph Station | None | Sacramento | |
| 772 | 475 | Mar 2015 | Placerville- Dry Diggins- Old Hangtown | State | El Dorado | |
| 773 | 845 | Jul 2016 | Plank Road | State | Imperial | |
| 774 | 180 | Nov 2014 | Plaza Hotel | State | San Benito | |
| 775 | 480 | Oct 2015 | Plumas House Site | None | Plumas | |
| 776 | 160 | Jan 2015 | Plummer House, Oldest House in Hollywood | Other | Los Angeles | |
| 777 | 695 | Oct 2015 | Plum Valley House | State | Sierra | |
| 778 | 470 | Jun 2015 | Plymouth Trading Post | None | Amador | |
| 779 | 1035 | Jun 2015 | Point Arena Light Station | Other | Mendocino | |
| 780 | 965 | May 2014 | Point Dume | State | Los Angeles | |
| 781 | 951.2 | Oct 2016 | Point Sur Light Station | State | Monterey | |
| 782 | 514 | Sep 2014 | Pomona Water Powerplant | Missing | Los Angeles | |
| 783 | 700 | Mar 2015 | Pony Express: El Dorado Nevada House (Mud Springs) | State | El Dorado | |
| 784 | 698 | Jul 2014 | Pony Express Fifteen Mile House | State | Sacramento | |
| 785 | 697 | Jul 2014 | Pony Express Five Mile House | State | Sacramento | |
| 786 | 728 | Apr 2015 | Pony Express: Friday's Station | Other | El Dorado | |
| 787 | 705 | Apr 2015 | Pony Express: Moores (Riverton) | State | El Dorado | |
| 788 | 699 | Mar 2015 | Pony Express: Mormon Tavern | State | El Dorado | |
| 789 | 701 | Mar 2015 | Pony Express: Placerville | State | El Dorado | |
| 790 | 703 | Mar 2015 | Pony Express: Pleasant Grove House | State | El Dorado | |
| 791 | 805 | May 2015 | Pony Express Remount Station (Woodford Station) | State | Alpine | |
| 792 | 702 | Mar 2015 | Pony Express Route | State | Sacramento | |
| 793 | 696 | Sep 2015 | Pony Express Site | State | San Francisco | |
| 794 | 704 | Apr 2015 | Pony Express: Sportsman's Hall | State | El Dorado | |
| 795 | 707 | Apr 2015 | Pony Express: Strawberry Valley House | State | El Dorado | |
| 796 | 706 | Apr 2015 | Pony Express: Webster's Sugar Loaf House | State | El Dorado | |
| 797 | 708 | Apr 2015 | Pony Express: Yank's Station | State | El Dorado | |
| 798 | 881 | Apr 2016 | Port of Los Angeles Long Wharf | State | Los Angeles | |
| 799 | 92 | Apr 2015 | Portolá Camp: November 11, Pulgas Water Temple | None | San Mateo | |
| 800 | 27 | Apr 2015 | Portolá Camp: November 4 | State | San Mateo | |
| 801 | 94 | Apr 2015 | Portolá Camp: November 5 | None | San Mateo | |
| 802 | 23 | Oct 2015 | Portolá Camp: October 23 | None | San Mateo | |
| 803 | 26 | May 2015 | Portolá Camp: October 24-26 | Missing | San Mateo | |
| 804 | 22 | Apr 2015 | Portolá Camp: October 27 | None | San Mateo | |
| 805 | 21 | Apr 2015 | Portolá Camp: October 28-29 | None | San Mateo | |
| 806 | 25 | May 2015 | Portolá Camp: October 30 | None | San Mateo | |
| 807 | 24 | May 2015 | Portolá Camp: October 31 | State | San Mateo | |
| 808 | 727 | Jan 2015 | Portolá Expedition | Other | Ventura | |
| 809 | 2 | Jan 2015 | Portolá Journey's End | State | San Mateo | |
| 810 | 655 | Mar 2016 | Portolá Trail Campsite | State | Los Angeles | |
| 811 | 665 | Mar 2016 | Portolá Trail Campsite 2 | State | Los Angeles | |
| 812 | 119 | Sep 2015 | Portsmouth Plaza | Other | San Francisco | |
| 813 | 539 | Apr 2015 | Posey Station | Missing | Kern | |
| 814 | 939 | Jul 2014 | Possum Trot | None | San Bernadino | |
| 815 | 831 | Jun 2015 | Posted Water Notice Site | Other | Glenn | |
| 816 | 464 | Jul 2014 | Prairie City Site | State | Sacramento | |
| 817 | 79 | Sep 2015 | Presidio of San Francisco | State | San Francisco | |
| 818 | 316 | Apr 2014 | Presidio of Sonoma | Other | Sonoma | |
| 819 | 867 | Jul 2016 | Preston Castle | State | Amador | |
| 820 | 735 | Aug 2015 | Prince-Garibardi Building | State | Calaveras | |
| 821 | 175 | May 2014 | Protestant Church Site | Other | Solano | |
| 822 | 223 | Aug 2014 | Putnam's Cabin | State | Inyo | |
| 823 | 213 | Oct 2015 | Rabbit Creek Hotel Monument | Other | Plumas | |
| 824 | 950 | Jul 2016 | Rabbit Experimental Station | State | San Bernadino | |
| 825 | 286 | Aug 2015 | Rail Road Flat | State | Calaveras | |
| 826 | 970 | Jan 2015 | Rainbow Trout Species Identified | State | Alameda | |
| 827 | 856 | Apr 2015 | Ralston Hall | State | San Mateo | |
| 828 | 1009 | Jul 2016 | Ramona Bowl | State | Riverside | |
| 829 | 553 | Jan 2015 | Rancho Camulos | Other | Ventura | |
| 830 | 329 | Jun 2015 | Rancho Chico and Bidwell Adobe | State | Butte | |
| 831 | 942 | May 2016 | Rancho Chino Adobe | State | San Bernadino | |
| 832 | 940 | Mar 2015 | Rancho Guajome | State | San Diego | |
| 833 | 978 | Mar 2016 | Rancho Los Cerritos Historic Site | State | Los Angeles | |
| 834 | 1033 | Aug 2014 | Rancho Nipomo | State | San Luis Obispo | |
| 835 | 246 | Jan 2015 | Rancho San Antonio (Peralta Grant) | State | Alameda | |
| 836 | 556 | May 2014 | Rancho San Francisco | State | Los Angeles | |
| 837 | 982 | Apr 2016 | Rancho Santa Fe | State | San Diego | |
| 838 | 979 | May 2015 | Rancho Simi | State | Ventura | |
| 839 | 938 | Nov 2015 | Rand Mining District | State | Kern | |
| 840 | 10 | Jul 2015 | Reading Adobe | State | Shasta | |
| 841 | 32 | Jul 2015 | Reading's Bar | State | Shasta | |
| 842 | 203 | Oct 2014 | Red Hill | Other | Orange | |
| 843 | 12 | Jun 2015 | Residence of General William B. Ide | State | Tehama | |
| 844 | 1015 | Apr 2016 | Richard Nixon Birthplace | State | Orange | |
| 845 | 494 | Apr 2015 | Richardson Adobe (Los Coches Rancho) | Missing | Monterey | |
| 846 | 337 | Oct 2015 | Rich Bar | State | Plumas | |
| 847 | 1032 | Jun 2014 | Richmond Shipyards District | None | Contra Costa | |
| 848 | 84 | Sep 2015 | Rincon Hill | State | San Francisco | |
| 849 | 385 | Apr 2016 | Rio San Gabriel Battlefield | State | Los Angeles | |
| 850 | 936 | Aug 2014 | Rios-Caledonia Adobe | State | San Luis Obispo | |
| 851 | 710 | Jun 2015 | Robert Louis Stevenson State Park | Other | Napa | |
| 852 | 898 | May 2015 | Roberto-Suñol Adobe | State | Santa Clara | |
| 853 | 276 | Aug 2015 | Robinson's Ferry | State | Calaveras | |
| 854 | 779 | May 2014 | Rockville Stone Chapel | State | Solano | |
| 855 | 362 | Mar 2016 | Rómulo Pico Adobe | Other | Los Angeles | |
| 856 | 76 | Oct 2015 | Roop's Fort | Other | Lassen | |
| 857 | 300 | Jul 2014 | Rose Station | Other | Kern | |
| 858 | 294 | Jul 2015 | Rough and Ready | State | Nevada | |
| 859 | 674 | Oct 2015 | Round Valley | State | Mendocino | |
| 860 | 105 | Apr 2015 | Royal Presidio Chapel | Other | Monterey | |
| 861 | 636 | Apr 2015 | ROYAL SPANISH PRESIDIO | State | Santa Barbara | |
| 862 | 303 | Aug 2015 | Rubidoux Grist Mill | Other | Riverside | |
| 863 | 102 | Aug 2015 | Rubidoux House | None | Riverside | |
| 864 | 224 | May 2016 | Ruins of the Third Serrano Adobe | Other | Riverside | |
| 865 | 749 | Nov 2016 | Saahatpa | State | Riverside | |
| 866 | 611 | Jul 2014 | Sacramento Bee Building | None | Sacramento | |
| 867 | 566 | Mar 2015 | Sacramento City Cemetery | State | Sacramento | |
| 868 | 605 | Mar 2015 | Sacramento Union Site | None | Sacramento | |
| 869 | 437 | Jul 2014 | Sailing Launch Comet | State | San Joaquin | |
| 870 | 139 | Jun 2015 | Saint James Episcopal Church | Other | Tuolumne | |
| 871 | 910 | May 2015 | Saint Joseph's Roman Catholic Church | Other | Santa Clara | |
| 872 | 862 | May 2014 | Saint Paul's Episcopal Church | State | Solano | |
| 873 | 820 | Jun 2015 | Saint Teresa of Avila Church | State | Sonoma | |
| 874 | 571 | Mar 2015 | Salmon Falls | Missing | El Dorado | |
| 875 | 501 | Apr 2014 | Salvador Vallejo Adobe | State | Sonoma | |
| 876 | 252 | Aug 2015 | San Andreas | Other | Calaveras | |
| 877 | 42 | Aug 2015 | San Bernardino Asistencia | Missing | San Bernadino | |
| 878 | 114.1 | Aug 2014 | San Buenaventura Mission Aqueduct | None | Ventura | |
| 879 | 391 | Apr 2015 | Sánchez Adobe | State | San Mateo | |
| 880 | 523 | Sep 2014 | San Diego Barracks | State | San Diego | |
| 881 | 59 | Apr 2014 | San Diego Presidio Site | State | San Diego | |
| 882 | 798 | Mar 2015 | San Diego State College | State | San Diego | |
| 883 | 63 | Sep 2014 | San Diego Viejo Plaza | Other | San Diego | |
| 884 | 253 | Aug 2015 | Sandy Gulch | Other | Calaveras | |
| 885 | 793 | Oct 2016 | San Felipe Valley and Stage Station | State | San Diego | |
| 886 | 753 | Nov 2015 | San Fernando Cemetery | State | Los Angeles | |
| 887 | 394 | Oct 2015 | San Francisco Bay Discovery Site Plaque | State | San Mateo | |
| 888 | 208 | Aug 2014 | San Francis Ranch | State | Inyo | |
| 889 | 673 | Oct 2016 | San Gregorio | State | San Diego | |
| 890 | 777 | Jul 2014 | San Joaquin City Site | Missing | San Joaquin | |
| 891 | 520 | May 2015 | San Joaquin Valley College Site | State | San Joaquin | |
| 892 | 824 | Jan 2015 | San Leandro Oyster Beds | Missing | Alameda | |
| 893 | 533 | Jun 2016 | San Pasqual Battlefield | State | San Diego | |
| 894 | 1037 | Apr 2015 | Santa Barbara County Courthouse | State | Santa Barbara | |
| 895 | 785 | Oct 2016 | Santa Catarina | State | San Diego | |
| 896 | 260 | May 2015 | Santa Clara Campaign Treaty Site | State | Santa Clara | |
| 897 | 983 | Mar 2014 | Santa Cruz Beach Boardwalk | State | Santa Cruz | |
| 898 | 576 | Oct 2014 | Santa Fe and Salt Lake Trail Monument | Other | San Bernadino | |
| 899 | 364 | Aug 2014 | Santa Margarita de Cortona Asistencia | None | San Luis Obispo | |
| 900 | 1026 | Jul 2016 | Santa Margarita Ranchhouse | State | San Diego | |
