| Name | San Sebastian Municipio |
| State | Puerto Rico |
| FIPS Code | 72131 |
| Timezone | Atlantic Standard Time (AST) |
| Population (2022) | 42,291 |
| Population Growth Rate(2000-2022) | -7.27% |
| Majority Ethnicity | Hispanic 55.91% |
| Public School Majority Ethnicity | Hispanic 100% |
| Partisan Voting Index | Democratic:+ |
| Unemployment Rate | 8.7% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 42.34% |
| African American | 1.66% |
| Hispanic | 55.91% |
| Asian | 0.03% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 0.02% |
| African American | 0.04% |
| Hispanic | 99.94% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |