| Place Name | Castor |
| Place Type | Village |
| ZIP Code(s) | 71016 |
| County | Bienville Parish |
| Area Code(s) | 318 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 135 |
| Population Growth Rate (2010-19) | -10.85% |
| Majority Ethnicity | White 78.23% |
| US Congressional District(s) | Louisiana 4th |
| State House Districts | 13 |
| State Senate Districts | 36 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 78.23% |
| African American | 17.34% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.43% |