Rancho Santa Margarita city, California
Official LSAD Designation: Rancho Santa Margarita city • Census GEOID: 0659587
• Orange County
Demographics & Population Profile
Population and demographics for Rancho Santa Margarita city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 45,779 | — | 2025 | Census |
| Median Age | 40.9 yrs | ±1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 17,123 | ±461 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).