| Place Name | Santa Margarita |
| Place Type | Census Designated Place |
| ZIP Code(s) | 93453 |
| County | San Luis Obispo County |
| Area Code(s) | 805,820 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 1,556 |
| Population Growth Rate (2010-19) | 2.54% |
| Majority Ethnicity | White 86.78% |
| Metro/Micro Stats Area | San Luis Obispo-Paso Robles, CA |
| US Congressional District(s) | California 24th |
| State Assembly Districts | 35 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.78% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 13.22% |