| City : | Marengo City |
| County : | Mchenry County |
| State : | Illinois (IL) |
| Land Area : | 5.01 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 42.2473371 |
| Longitude : | -88.6063398 |
| Population (2010): | 7,648 |
| Population Estimate (2012) : | 7,675 |
| Population Density : | 1,526.52/sq mi |
| Housing Units (2012) : | 3,046 |
| Median Household Income (2012) : | $58,766 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $69,459 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $184,800 (Illinois : $190,800, USA : $181,400) |