California - Area of significance: Exploration/Settlement
| 500 Varas Square-Government Reserve |
| Administration Building, Atascadero Colony |
| Ainsworth, Lewis, House |
| Alkali Flat North Historic District |
| Alta Mesa Farm Bureau Hall |
| Anacapa Island Archeological District |
| Anderson Marsh Archeological District |
| Armory Hall |
| Atascadero Printery |
| Bailey, Jonathan, House |
| Bardsdale Methodist Episcopal Church |
| Barron-Latham-Hopkins Gate Lodge |
| Barton-Lackey Cabin |
| Barton Villa |
| Benicia City Cemetery |
| Berwick Manor and Orchard |
| Bird and Dinkelspiel Store |
| Bodie Historic District |
| Bradford, A. S., House |
| Branciforte Adobe |
| Bristol-Cypress Historic District |
| BROTHER JONATHAN (Shipwreck Site) |
| Bruff's Rock Petroglyph Site |
| Bumann Ranch |
| Cabot's Old Indian Pueblo Museum |
| Cabrillo National Monument |
| CA-CCO-548/H |
| Cady House |
| Call-Booth House |
| Camp Curry Historic District |
| Carlsbad Santa Fe Depot |
| Carmelita Court |
| Carriger, Nicholas, Estate |
| Casa de Esperanza |
| Castro, Jose Joaquin, Adobe |
| Cattle Cabin |
| Chapman, A. H., House |
| Chapman, John G., House |
| China Camp |
| Christmas Tree Lane |
| Clayton Vineyards-DeMartini Winery |
| Cole's Five Cypress Farm |
| Coloma |
| Columbia Historic District |
| Cooper Cabin |
| Crank House |
| Crawford Ditch |
| Cresent City Lighthouse |
| Crystal Cove Historic District |
| Culver, C. Z., House |
| Cunningham-Hembree Estate |
| Death Valley Junction Historic District |
| DePue, Grace Blair, House and Indian Museum |
| Devils Postpile Cabin Site |
| Donner Camp |
| Downtown Santa Ana Historic Districts (North, Government/Institutional and South, Retail) |
| Dresbach-Hunt-Boyer House |
| Dry Creek-Warm Springs Valleys Archeological District |
| Durham, W. W., House |
| Edison Historic District |
| Elk Grove Historic District |
| Elliston |
| Elster, C. A., Building |
| Endert's Beach Archeological Sites |
| Episcopal Church of the Ascension |
| Errea House |
| Estudillo Mansion |
| Eureka Historic District |
| Evergreen Cemetery |
| Fages-De Anza Trail-Southern Emigrant Road |
| Farallone Islands |
| Felicita County Park Prehistoric Village Site |
| Fiddletown |
| Fiddyment Ranch Main Complex |
| Fontana Farms Company Ranch House, Camp No. 1 |
| Forbes Mill Annex |
| Ford, Jerome B., House |
| Forest City |
| Forest House |
| Fort Jones House |
| Fort Ross |
| Freestone Store |
| French Park Historic District |
| Frisbie, Edward, House |
| Gables, The |
| Galindo, Don Francisco, House |
| Gamble Building and Miner's Bean Kettle |
| Gamlin Cabin |
| Garbani, Rocco, Homestead |
| Gilman Ranch |
| Glen Oaks Ranch |
| Gould-Shaw House |
| Grand Boulevard Historic District |
| Green Hotel |
| Griffith House |
| Groveland Hotel |
| Halcyon Historic District |
| Hansen, George, House |
| Harmon-McNeil House |
| Harmony Grove Church |
Data from United States Park Service and Wikidata
