In 2020, Stephenson County, IL had a population of 44.7k people with a median age of 45.5 and a median household income of $50,466. Between 2019 and 2020 the population of Stephenson County, IL declined from 45,093 to 44,683, a −0.909% decrease and its median household income grew from $48,805 to $50,466, a 3.4% increase.
The 5 largest ethnic groups in Stephenson County, IL are White (Non-Hispanic) (81.8%), Black or African American (Non-Hispanic) (9.56%), Two+ (Non-Hispanic) (3.33%), White (Hispanic) (2.77%), and Two+ (Hispanic) (1.09%).
None of the households in Stephenson 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.
99.2% of the residents in Stephenson County, IL are U.S. citizens.
The largest universities in Stephenson County, IL are Highland Community College (778 degrees awarded in 2020).
In 2020, the median property value in Stephenson County, IL was $99,600, and the homeownership rate was 69.9%.
Most people in Stephenson County, IL drove alone to work, and the average commute time was 22.8 minutes. The average car ownership in Stephenson County, IL was 2 cars per household.