| Place Name | Grand Coteau |
| Place Type | Town |
| ZIP Code(s) | 70570 70584 |
| County | Saint Landry Parish |
| Area Code(s) | 337 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 649 |
| Population Growth Rate (2010-19) | -18.06% |
| Majority Ethnicity | African American 63.48% |
| Metro/Micro Stats Area | Opelousas, LA |
| US Congressional District(s) | Louisiana 4th |
| State House Districts | 40 |
| State Senate Districts | 24 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 35.93% |
| African American | 63.48% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.59% |