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DeKalb is a city in DeKalb County, Illinois, United States. The population was 43,862 according to the 2010 census, up from 39,018 at the 2000 census. The city is named after decorated German war hero Johann de Kalb, who died during the American Revolutionary War.HistoryDeKalb was originally called DeKalb Centre, and under the latter name was platted in 1853. The name is for Baron Johann de Kalb, a major general in the American Revolutionary War. A post office has been in operation at DeKalb since 1849.GeographyThe city of DeKalb is located in northern Illinois, United States. Roughly 65 miles west of downtown Chicago and roughly 30 miles southeast of Rockford, IL. The Kishwaukee River flows northward through the city of DeKalb.According to the 2010 census, DeKalb has a total area of 14.812sqmi, of which 14.65sqmi (or 98.91%) is land and 0.162sqmi (or 1.09%) is water.On August 24, 2007, the Kishwaukee River at DeKalb crested at (all-time record ) causing major flooding. This was only the second time the river has risen above since the level of the river has been recorded.ClimateDeKalb has a humid continental climate (Köppen climate classification Dfa) typical of northern Illinois, with four distinct seasons. Summers can be hot, while winters are cold and snowy. Precipitation is somewhat uniform year-round, although it can be heavier in the spring and summer when the area is prone to strong thunderstorms.Add DeKalb and other United States destinations to your travel plans using our United States trip planner.
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