California - Significance region: Local
| Congregation B'nai B'rith |
| Congregation Talmud Torah of Los Angeles |
| Connell, Arthur and Kathleen, House |
| Consolidated Orange Growers Precooling & Ice Plant |
| Contra Costa County Courthouse Block |
| Contra Costa County Hall of Records |
| Cook, Maj. George Beecher, House |
| Coolot Company Building |
| Cooper Arms |
| Cooper Cabin |
| Cope Row Houses |
| Copperopolis Armory |
| Copperopolis Congregational Church |
| Corder Building |
| Corona High School |
| Cosby, James Fielding, House |
| Cottage Court |
| Cottonwood Corral |
| Cottonwood Historic District |
| Cottrell, John A., House |
| Coulter House |
| Coulterville Main Street Historic District |
| Counsel Rocks |
| Court |
| Court |
| Court |
| Court at 1274-1282 North Raymond Avenue |
| Court at 275 North Chester Avenue |
| Court at 533-549 North Lincoln Avenue |
| Court at 638-650 North Mar Vista Avenue |
| Court at 940-948 North Raymond Avenue |
| Cow Camp |
| Cow Creek Petroglyphs |
| Cowell Lime Works Historic District |
| Crabbe, Earl, Gymnasium |
| Crane Flat Fire Lookout |
| Crank House |
| Cranston-Geary House |
| Croll Building |
| Crooks Mansion |
| Crowder Canyon Archeological District |
| Cucamonga Service Station |
| Cueva Pintada |
| Culver, C. Z., House |
| Culver Hotel |
| Cunningham-Hembree Estate |
| Cut Tank Corral |
| Cuyamaca Village |
| Cypress Court |
| Cypress Street Schoolhouse |
| Dallam-Merritt House |
| Dana Adobe |
| Dana, Richard Henry, Branch |
| Danville Southern Pacific Railroad Depot |
| Davenport Jail |
| Davis Mill |
| De Anza Hotel |
| Deer Spring Corral |
| Deetjen's Big Sur Inn |
| Degnan's Restaurant |
| Delane House |
| de Lemos, Pedro, House |
| De Neve, Felipe, Branch |
| Denham, Mary E., House |
| De-No-To Cultural District |
| DePue, Grace Blair, House and Indian Museum |
| Descanso Gardens |
| Desert Golf Course |
| Desert Queen Mine |
| Devils Postpile Cabin Site |
| Devils Postpile National Monument Ranger Cabin |
| Dewella Apartments |
| DeWenter Mansion, Guest House and Grounds |
| DeWitt General Hospital |
| Diamond Apartments |
| Dielmann, John, House |
| Dinkey Creek Bridge |
| Dipsea Trail, The |
| Dixie Schoolhouse |
| Dixon Carnegie Library |
| Doctors House |
| Doheny Estate/Greystone |
| Dohrmann Building |
| Dollar, Robert, Estate |
| Dollar, Robert, House |
| Dollar, Robert Stanley Sr., House |
| Dolliver House |
| Don Carlos Court |
| Doolan, Richard P., Residence and Storefronts |
| Douglas Flat School |
| Dove Corral |
| Downing, T. B., House |
| Downtown Hollister Historic District |
| Downtown Oakland Historic District |
| Downtown Santa Ana Historic Districts (North, Government/Institutional and South, Retail) |
| Downtown Woodland Historic District |
| Drawing Building |
| Dresbach-Hunt-Boyer House |
| Drucker, Peter, House |
| Dry Lakes Plateau |
Data from United States Park Service and Wikidata
