In 2022, Williamson County, IL had a population of 67.1k people with a median age of 41.2 and a median household income of $60,325. Between 2021 and 2022 the population of Williamson County, IL declined from 67,271 to 67,120, a −0.224% decrease and its median household income grew from $54,682 to $60,325, a 10.3% increase.
The 5 largest ethnic groups in Williamson County, IL are White (Non-Hispanic) (88.5%), Two+ (Non-Hispanic) (3.42%), Black or African American (Non-Hispanic) (3.28%), Asian (Non-Hispanic) (1.49%), and Two+ (Hispanic) (1.06%).
None of the households in Williamson 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.
98.8% of the residents in Williamson County, IL are U.S. citizens.
The largest universities in Williamson County, IL are John A Logan College (720 degrees awarded in 2022).
In 2022, the median property value in Williamson County, IL was $139,500, and the homeownership rate was 71%.
Most people in Williamson County, IL drove alone to work, and the average commute time was 22.8 minutes. The average car ownership in Williamson County, IL was 2 cars per household.
Williamson County, IL borders Franklin County, IL, Jackson County, IL, Johnson County, IL, Pope County, IL, Saline County, IL, and Union County, IL.