The exact population of DeKalb, Illinois as of July 2024 is estimated at 40,290 residents.
Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from DeKalb.
![Population of DeKalb, IL](/images/population/2010.jpg)
This population of DeKalb IL is provided by US bureau of statistics.
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