| Place Name | Rancho Santa Margarita |
| Place Type | City |
| ZIP Code(s) | 92688 |
| County | Orange County |
| Area Code(s) | 949 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 48,081 |
| Population Growth Rate (2010-19) | 0.20% |
| Majority Ethnicity | White 68.14% |
| Metro/Micro Stats Area | Los Angeles-Long Beach-Anaheim, CA |
| US Congressional District(s) | California 45th |
| State Assembly Districts | 73 |
| State Senate Districts | 36 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 68.14% |
| African American | 1.75% |
| Hispanic | 0.37% |
| Asian | 10.58% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 19.12% |