In 2022, Jersey County, IL had a population of 21.5k people with a median age of 42.8 and a median household income of $77,607. Between 2021 and 2022 the population of Jersey County, IL declined from 21,533 to 21,462, a −0.33% decrease and its median household income grew from $71,655 to $77,607, a 8.31% increase.
The 5 largest ethnic groups in Jersey County, IL are White (Non-Hispanic) (95.3%), Two+ (Non-Hispanic) (1.66%), Two+ (Hispanic) (0.881%), Black or African American (Non-Hispanic) (0.704%), and Asian (Non-Hispanic) (0.592%).
None of the households in Jersey 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.
99.4% of the residents in Jersey County, IL are U.S. citizens.
The largest universities in Jersey County, IL are Principia College (115 degrees awarded in 2022).
In 2022, the median property value in Jersey County, IL was $161,800, and the homeownership rate was 81.1%.
Most people in Jersey County, IL drove alone to work, and the average commute time was 27.2 minutes. The average car ownership in Jersey County, IL was 2 cars per household.
Jersey County, IL borders Calhoun County, IL, Greene County, IL, Macoupin County, IL, Madison County, IL, and St. Charles County, MO.