Rancho Santa Margarita California ☎ 949-635-1800 Last Updated: 06/26/2022 | |
Rancho Santa Margarita is a city in Orange County, California, United States. One of Orange County's youngest cities, Rancho Santa Margarita is a master-planned community. The population was 47,853 at the 2010 census, up from 47,214 at the 2000 census. | |