DeKalb is a city in DeKalb County, Illinois, United States. The population was 39,018 at the 2000 census. The city's name is pronounced 'dee-KALB' with the L silent, which are common pronunciations for similarly spelled locations, mostly located in the southern US, such as in DeKalb County, Georgia. Dekalb apartments for rent comparison page shows most up to date rent information on Dekalb apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.