| Place Name | San Sebastián |
| Place Type | Zona Urbana |
| ZIP Code(s) | 00685 |
| County | San Sebastian |
| Area Code(s) | 787,939 |
| Timezone | Atlantic Standard Time (AST) |
| Population (2022) | 11,416 |
| Population Growth Rate (2010-19) | -11.97% |
| Majority Ethnicity | Hispanic 0% |
| Metro/Micro Stats Area | Aguadilla-Isabela, PR |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 40.99% |
| African American | 2.7% |
| Hispanic | 0% |
| Asian | 0.12% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 56.19% |