| Zip Code : | 60115 |
| City : | Cortland town, DeKalb city, Sycamore city |
| County : | DeKalb County |
| State : | Illinois (IL) |
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| Land Area : | 80.76 sq mi |
| Water Area : | 0.34 sq mi |
| Latitude : | 41.9012636 |
| Longitude : | -88.7592533 |
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| Population (2010): | 46,272 |
| Population Estimate (2012) : | 46,410 |
| Population Density : | 572.95/sq mi |
| Housing Units (2012) : | 17,761 |
| Median Household Income (2012) : | $39,374 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $62,911 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $174,500 (Illinois : $190,800, USA : $181,400) |