| Place Name | Rossmoor |
| Place Type | Census Designated Place |
| ZIP Code(s) | 90720 90740 |
| County | Orange County |
| Area Code(s) | 562 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 10,294 |
| Population Growth Rate (2010-19) | 3.72% |
| Majority Ethnicity | White 73.36% |
| Metro/Micro Stats Area | Los Angeles-Long Beach-Anaheim, CA |
| US Congressional District(s) | California 47th |
| State Assembly Districts | 72 |
| State Senate Districts | 34 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 73.36% |
| African American | 2.64% |
| Hispanic | 0.28% |
| Asian | 9.44% |
| Native American | 0.55% |
| Hawaiin/Pacific Islander | 13.73% |