In 2022, DeKalb County, IL had a population of 101k people with a median age of 31.8 and a median household income of $68,617. Between 2021 and 2022 the population of DeKalb County, IL declined from 100,922 to 100,686, a −0.234% decrease and its median household income grew from $64,019 to $68,617, a 7.18% increase.
The 5 largest ethnic groups in DeKalb County, IL are White (Non-Hispanic) (74.4%), Black or African American (Non-Hispanic) (7.54%), White (Hispanic) (4.78%), Other (Hispanic) (3.59%), and Two+ (Hispanic) (3.34%).
None of the households in DeKalb County, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
96.3% of the residents in DeKalb County, IL are U.S. citizens.
The largest universities in DeKalb County, IL are Northern Illinois University (4,352 degrees awarded in 2022), Kishwaukee College (791 degrees), and Debutantes School of Cosmetology and Nail Technology (29 degrees).
In 2022, the median property value in DeKalb County, IL was $218,600, and the homeownership rate was 60%.
Most people in DeKalb County, IL drove alone to work, and the average commute time was 26.3 minutes. The average car ownership in DeKalb County, IL was 2 cars per household.
DeKalb County, IL borders Boone County, IL, Kane County, IL, Kendall County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, and Winnebago County, IL.