| Place Name | Grand Detour |
| Place Type | Census Designated Place |
| ZIP Code(s) | 61021 61061 |
| County | Ogle County |
| Area Code(s) | 815,779 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 469 |
| Population Growth Rate (2010-19) | -1.17% |
| Majority Ethnicity | White 73.2% |
| Metro/Micro Stats Area | Rochelle, IL |
| US Congressional District(s) | Illinois 16th |
| State House Districts | 90 |
| State Senate Districts | 45 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 73.2% |
| African American | 2.06% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 24.74% |