Williamson County, IL Housing Market
The median sale price of a home in Williamson County was $232K over the last 3 months, up 17.1% since the same period last year. The median sale price per square foot in Williamson County is $107, down 5.7% since last year.
Williamson County Housing Market Trends
Over the three months ending September 2026, Williamson County home prices were up 17.1% compared to the same period last year, selling for a median price of $232K. On average, homes in Williamson County sell after 68 days on the market compared to 60 days last year. There were 67 homes sold in September this year, down from 77 last year.

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View houses in Williamson County that sold recently
Recently sold homes
- $1,590,000 Last Sold Price—beds—baths—sq ft000 Golf Course Rd, Marion, IL 62951-0000List Price$1,758,000Sale to List10% under listDays on Market39 days000 Golf Course Rd, Marion, IL 62951-0000
- $350,000 Last Sold Price3 beds2 baths1,750 sq ft11604 Macie Dr, Marion, IL 62959List Price$350,000Sale to List0% over listDays on Market64 days11604 Macie Dr, Marion, IL 62959
- $205,000 Last Sold Price3 beds2 baths2,974 sq ft24177 Corinth Rd, Thompsonville, IL 62890List Price$205,000Sale to List0% over listDays on Market235 days24177 Corinth Rd, Thompsonville, IL 62890
- $610,000 Last Sold Price6 beds6.5 baths6,350 sq ft6399 Pelican Ln, Carbondale, IL 62902List Price$700,000Sale to List13% under listDays on Market81 days6399 Pelican Ln, Carbondale, IL 62902
- $230,000 Last Sold Price3 beds3 baths1,550 sq ft11203 Murrah Rd, Marion, IL 62959List Price$285,000Sale to List19% under listDays on Market91 days11203 Murrah Rd, Marion, IL 62959
- $139,900 Last Sold Price3 beds2 baths1,508 sq ft608 E 1st St, Carterville, IL 62918List Price$139,900Sale to List0% over listDays on Market58 days608 E 1st St, Carterville, IL 62918
- $295,000 Last Sold Price3 beds2 baths1,720 sq ft311 Gateway Rd, Marion, IL 62959List Price$297,000Sale to List1% under listDays on Market60 days311 Gateway Rd, Marion, IL 62959
- $224,000 Last Sold Price3 beds2 baths1,340 sq ft1400 E Parham St, Marion, IL 62959List Price$226,000Sale to List1% under listDays on Market166 days1400 E Parham St, Marion, IL 62959
See all recently sold homes in Williamson County.
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Schools in Williamson County
- Elementary
- Middle
- High
GreatSchools Rating
9/10 Tri-C Elementary K-4 Grade School Public • K-3 | 650 Students | 2 reviews |
8/10 Carterville Intermediate School Public • 4-6 | 500 Students | 2 reviews |
8/10 Washington Elementary School Public • K-5 | 465 Students | N/A |
8/10 Longfellow Elementary School Public • K-5 | 261 Students | 4 reviews |
7/10 Lincoln Elementary School Public • 3-4 | 160 Students | N/A |
Climate's impact on Williamson County housing
Learn about natural hazards and environmental risks, such as floods, fires, wind, and heat that could impact homes in Williamson County.
Flood Factor - Minor
Flood Factor

Fire Factor - Moderate
Fire Factor

Wind Factor - Minor
Wind Factor

Wind likelihood over time
Heat Factor - Major
Heat Factor

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