EntityQ5803291· pop 20· linked from 104 articlesShell RidgeSign in to savecensus-designated place in Contra Costa County, CaliforniaConnectionsSan Mateo CountyEntityUnited States Census BureauEntitycensus-designated place in the United StatesEntity2010 United States CensusEntityBlackhawkEntityUnited StatesCountryCaliforniaEntitylist of sovereign statesEntitySan FranciscoEntitytime zoneEntitygeographic coordinate systemEntitySan JoseEntityU.S. stateEntityOaklandEntityDaylight saving timeConceptAfrican AmericansEntityBerkeleyEntityPalo AltoEntityMarin CountyEntityCupertinoEntityCategoriesCensus-designated places in CaliforniaCensus-designated places in Contra Costa County, California