| Place Name | San Castle |
| Place Type | Census Designated Place |
| ZIP Code(s) | 33435 33462 |
| County | Palm Beach County |
| Area Code(s) | 561 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 3,507 |
| Population Growth Rate (2010-19) | 9.54% |
| Majority Ethnicity | White 37.72% |
| Metro/Micro Stats Area | Miami-Fort Lauderdale-Pompano Beach, FL |
| US Congressional District(s) | Florida 21st |
| State House Districts | 88 |
| State Senate Districts | 31 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 37.72% |
| African American | 33.58% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 28.7% |