In 2018, Stephenson County, IL had a population of 45.4k people with a median age of 45.1 and a median household income of $48,016. Between 2017 and 2018 the population of Stephenson County, IL declined from 45,839 to 45,433, a -0.886% decrease and its median household income grew from $46,427 to $48,016, a 3.42% increase.
The 5 largest ethnic groups in Stephenson County, IL are White (Non-Hispanic) (82.9%), Black or African American (Non-Hispanic) (9.84%), White (Hispanic) (3.07%), Two+ (Non-Hispanic) (2.43%), and Asian (Non-Hispanic) (0.806%). NaNk% of the people in Stephenson County, IL speak a non-English language, and 98.9% are U.S. citizens.
The largest universities in Stephenson County, IL are Highland Community College (625 degrees awarded in 2017).
The median property value in Stephenson County, IL is $97,000, and the homeownership rate is 68.7%. Most people in Stephenson County, IL commute by Drove Alone, and the average commute time is 20.6 minutes. The average car ownership in Stephenson County, IL is 2 cars per household.
Stephenson County, IL borders Carroll County, IL, Ogle County, IL, Jo Daviess County, IL, Green County, WI, Lafayette County, WI, and Winnebago County, IL.