- 2 bd
- 1 ba
- 900 sqft

The average Williamson County, IL home value is $157,901, up 0.0% over the past year, and homes go to pending in around 21 days. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $157,901
1-Year Value Change: +0%
(Data through August 31, 2026)
Zillow is more than a place to browse homes. It’s a place to connect with a local agent, explore financing solutions, schedule home tours, understand your buying and selling power, and more.
The median home value in Williamson County, IL is $157,901 as of August 2026. This represents a 0.1% decrease compared to last month and a 0.0% increase year-over-year.
The median home value in Williamson County, IL ($157,901) compares to Illinois ($297,573) and the U.S. national median ($368,697).
The cities with the highest median home values in Williamson County, IL include: Creal Springs ($206,873), Crainville ($201,181), Carterville ($187,434), Marion ($182,275), Energy ($159,227). These cities represent the most expensive areas within the county.