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Williamson County, IL Real Estate & Property Data

Williamson County Real Estate Market Trends
Last Updated: September 20, 2025

With up-to-date real estate data get detailed insight into Williamson County, IL sourced from the nation’s leading property data provider. Williamson County real estate data shows that there have been a total of 1 residential properties sold over the past 12 months. ATTOM’s Williamson County real estate data indicates that the county has 5 properties in foreclosure.

Williamson County Real Estate Market Trends
Get property data for any address in Williamson County, IL or the country:
Total Residential Properties 28,818
Total Commercial Properties 2,950
Avg. Home Age (Single Family Home) 61 Years
Avg. Square Feet (Single Family Home) 1,564
Total 2025 Residential Sales (year-to-date) 1
% of Homes Seriously Underwater (Q3 2025) N/A
Total 2024 Residential Sales N/A
% of Equity Rich Homes (Q3 2025) N/A
Effective 2024 Property Tax 1.48%
Total Foreclosure Filings (year-to-date) 32
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Williamson County, IL Real Estate Overview

There were 1 residential properties sold in the past year in Williamson County, IL. The median home value in Williamson County, IL is $156,222. There are a total of 28,818 residential properties in the Williamson.

Number of Homes Sold i
1
(Jul 2025)
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 1
  • June '25 Jun '25 N/A
  • May '25 May '25 N/A
  • April '25 Apr '25 N/A
  • March '25 Mar '25 N/A
  • February '25 Feb '25 N/A
  • January '25 Jan '25 N/A
  • December '24 Dec '24 N/A
  • November '24 Nov '24 N/A
  • October '24 Oct '24 N/A
  • September '24 Sep '24 N/A
  • August '24 Aug '24 N/A

Williamson County, IL Real Estate Market Overview

Last 30 days
  • City
    Median Est. Value
  • City
    Median Est. Value
  • City
    Median Est. Value

Williamson County, IL Foreclosure Activity

There were a total of 5 Williamson County, IL properties with a foreclosure filing in July 2025.

Total Foreclosure Filings i
5
(Jul 2025)
-50%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 5
  • June '25 Jun '25 5
  • May '25 May '25 2
  • April '25 Apr '25 7
  • March '25 Mar '25 4
  • February '25 Feb '25 4
  • January '25 Jan '25 5
  • December '24 Dec '24 3
  • November '24 Nov '24 10
  • October '24 Oct '24 5
  • September '24 Sep '24 4
  • August '24 Aug '24 6
Foreclosure Starts i
2
(Jul 2025)
+100%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 2
  • June '25 Jun '25 N/A
  • May '25 May '25 1
  • April '25 Apr '25 1
  • March '25 Mar '25 4
  • February '25 Feb '25 1
  • January '25 Jan '25 2
  • December '24 Dec '24 N/A
  • November '24 Nov '24 4
  • October '24 Oct '24 N/A
  • September '24 Sep '24 N/A
  • August '24 Aug '24 1
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