| Place Name | Erwinville |
| Place Type | Census Designated Place |
| ZIP Code(s) | 70729 |
| County | West Baton Rouge Parish |
| Area Code(s) | 225 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 2,225 |
| Population Growth Rate (2010-19) | 3.79% |
| Majority Ethnicity | African American 50.83% |
| Metro/Micro Stats Area | Baton Rouge, LA |
| US Congressional District(s) | Louisiana 6th |
| State House Districts | 18 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 49.07% |
| African American | 50.83% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.1% |