Home › Counties › Williamson County, IL
The median home value in Williamson County, IL is $159,235 as of 2026-07-31, down 0.39% from a year earlier.
Median Home Value
$159,235
Year-over-Year
-0.39%
National Rank
#2476 of 3071
Williamson County ranks 52nd out of 102 counties in IL by median home price, and is -32.1% below the U.S. national median of $234,352. Within IL, the typical county has a median home value of $160,090, making Williamson County -0.5% below the IL state median.
Households here earn a median of $65,604 a year against a typical home value of $159,235 — a price-to-income ratio of 2.4×, comfortably below the 3× income level generally considered manageable. That is less affordable than roughly 12% of U.S. counties. (How this is calculated.)
Reporting agencies in Williamson County recorded a violent crime rate of 435 per 100,000 residents in 2024 — around the middle of the national range. Property crime runs at 2,767 per 100,000.
Based on 2 reporting cities covering 28,981 residents (FBI UCR data — what this covers).
The median home value in Williamson County is $159,235. That's down 0.39% from a year earlier. That is about 32.1% below the U.S. national county median of $234,352, and makes Williamson County the 52nd most expensive of 102 counties in Illinois.
Median household income here is $65,604, so a typical home costs about 2.4× annual household earnings — relatively affordable compared with other U.S. counties.
Reporting police departments in Williamson County recorded 435 violent crimes per 100,000 residents. That figure covers 28,981 residents across 2 reporting cities, so it reflects the county's incorporated areas rather than every community within its borders.
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