| City : | Grand Detour |
| County : | Ogle County |
| State : | Illinois (IL) |
| Land Area : | 1.17 sq mi |
| Water Area : | 0.24 sq mi |
| Latitude : | 41.9011543 |
| Longitude : | -89.4130899 |
| Population (2010): | 429 |
| Population Estimate (2012) : | 469 |
| Population Density : | 366.73/sq mi |
| Housing Units (2012) : | 225 |
| Median Household Income (2012) : | $41,375 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $67,143 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $153,400 (Illinois : $190,800, USA : $181,400) |
Grand Detour Zip Codes
| 61021 (23,745) |