Williamson County, IL Real Estate & Homes For Sale
388 homes
Use arrow keys to navigateNEW - 8 HRS AGO0.5 ACRESKELLER WILLIAMS PINNACLE, New
Use arrow keys to navigateNEW - 14 HRS AGO0.31 ACRESLandmark Realty Group, New
Use arrow keys to navigateNEW - 16 HRS AGOShawnna L Donovan, Southern Illinois Realty Experts - Herrin
Use arrow keys to navigateNEW - 1 HR AGOMidwest Farm & Land Co. LLC
Use arrow keys to navigateNEW - 22 HRS AGOFOR SALE BY OWNER
Use arrow keys to navigateNEW - 1 DAY AGOAUCTION
Use arrow keys to navigateNEW - 1 DAY AGOAUCTION
NEW - 1 DAY AGO0.35 ACRESAaron Coon, HOUSE 2 HOME REALTY
NEW - 1 DAY AGOKaeden S Albright, Selling SI Realty
NEW - 1 DAY AGO10 ACRESRobi Kieszkowski, Southern Illinois Realty Experts - Carbondale
NEW - 2 DAYS AGO29.87 ACRESDaniel Henderson, Southern Illinois Realty Experts - Marion
NEW - 2 DAYS AGO0.45 ACRESMelissa A Plant, COLDWELL BANKER J D THOMPSON
NEW - 2 DAYS AGO0.25 ACRESStevie Rae, HOUSE 2 HOME REALTY
1.72 ACRESTaylor Johnston, RIVER 2 RIVER REALTY, INC.
OPEN SUN, 1:30-3:30PM2 ACRESAngela Horn, REALTY 618 LLC
3D VIEW24.14 ACRESC21 HOUSE OF REALTY, INC., New
0.74 ACRESBrittany R Grove, REALTY 618 LLC
0.28 ACRESMelissa A Plant, COLDWELL BANKER J D THOMPSON
FOR SALE BY OWNER
0.41 ACRESPresley Barnett, COLDWELL BANKER J D THOMPSON
Alysa Bunting, Indigo Realty LLC
AUCTION
AUCTION0.45 ACRES
40 ACRESHomecoin.com, Price Change
FOR SALE BY OWNER0.29 ACRES
AUCTION0.31 ACRES
Kaitlynn Morgan, HOUSE 2 HOME REALTY
0.75 ACRESCindy G Gibbons, Indigo Realty LLC
Williamson County, IL Real Estate Trends
Learn about the Williamson County, IL housing market through trends and averages.Affordability of Living in Williamson County, IL
The median home value is $157,901
| Month | Median home value |
|---|---|
| September 2025 | $157k |
| October 2025 | $158k |
| November 2025 | $158k |
| December 2025 | $158k |
| January 2026 | $159k |
| February 2026 | $160k |
| March 2026 | $161k |
| April 2026 | $160k |
| May 2026 | $159k |
| June 2026 | $159k |
| July 2026 | $158k |
| August 2026 | $158k |
Trends and affordability stats are provided by third party data sources.
Average Home Value in Williamson County, IL, by Home Size
| Home Size | Home Value* |
|---|---|
| 2 bedrooms (See homes) | $98,180 |
| 3 bedrooms (See homes) | $194,917 |
| 4 bedrooms (See homes) | $281,329 |
Based on information submitted to the MLS GRID as of 2026. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Click here for more information
IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Information is deemed reliable but not guaranteed. Some IDX listings have been excluded from this website. Click here for more information
Based on information submitted to the MLS GRID as of 2026-09-19 06:22:43 PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information