In 2021, Williamson County, IL had a population of 67.3k people with a median age of 41.1 and a median household income of $54,682. Between 2020 and 2021 the population of Williamson County, IL grew from 66,929 to 67,271, a 0.511% increase and its median household income grew from $52,076 to $54,682, a 5% increase.
The 5 largest ethnic groups in Williamson County, IL are White (Non-Hispanic) (89%), Black or African American (Non-Hispanic) (4.04%), Two+ (Non-Hispanic) (2.56%), Asian (Non-Hispanic) (1.32%), and White (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.
99% of the residents in Williamson County, IL are U.S. citizens.
The largest universities in Williamson County, IL are John A Logan College (698 degrees awarded in 2021).
In 2021, the median property value in Williamson County, IL was $125,800, and the homeownership rate was 71.7%.
Most people in Williamson County, IL drove alone to work, and the average commute time was 23.5 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.