| Place Name | Gillis |
| Place Type | Census Designated Place |
| ZIP Code(s) | 70611 |
| County | Calcasieu Parish |
| Area Code(s) | 337 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 561 |
| Population Growth Rate (2010-19) | 21.77% |
| Majority Ethnicity | White 81.22% |
| Metro/Micro Stats Area | Lake Charles, LA |
| US Congressional District(s) | Louisiana 3rd |
| State House Districts | 35 |
| State Senate Districts | 30 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 81.22% |
| African American | 12.66% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.12% |