Data through September 2026 · updated 2026-11-07 · free, from Zillow, Realtor.com, the Census Bureau and other public sources
Typical home value$157,730+0.1% YoY · prices are flat
Market right nowBuyer's marketMore homes for sale than last year, 24% have cut their price
Income needed to buy, per year$34,193About 0.5× the local median income ($67,879): affordable for a typical household
Days on market58 daysSlower than a year ago: buyers have time to negotiate
The typical home in Williamson County, IL is worth $157,730, about the same as a year ago. That is well below what local incomes have historically supported: fair value is about $186,349, so the area is 15.4% undervalued. It is a buyer's market: homes take about 58 days to sell, listings are up 30% from a year ago, 24% of listings have had a price cut. A household needs about $34,193 a year to afford the typical home here at today's 7.18% mortgage rate (20% down, payment at 30% of income); the median household earns $67,879. Typical rent is $988 a month. In the latest IRS figures, 305 more people moved in than out.
Home value over time
Solid: typical home value · dashed: fair value (household income × the 20-year average price-to-income ratio). Sources: FHFA, Zillow, U.S. Census Bureau.
Prices and affordability
Typical home value
$157,730
Change in 1 year
+0.1%
Overvalued %
−15.4%
Show 6 more
Fair home value
$186,349
Change in 5 years
+16.7%
Home value to income
2.3×
Monthly mortgage payment (20% down)
$855
Income needed to afford it
$34,193
Property tax rate
1.72%
Rent and investing
Typical rent
$988
Price-to-rent ratio
13.3×
HUD Fair Market Rent, 2 bedrooms
$996
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Gross rental yield
7.52%
Cap rate (estimate)
4.89%
Market activity
Listings vs a year ago
+30.2%
Days on market
58
Listings with a price cut
24.2%
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Homes for sale
250
Pending sales per 100 listings
38
Asking price per sq ft
$125
People and jobs
Median household income
$67,879
Population change (1 year)
+0.2%
Unemployment rate
5.0%
Show 4 more
Population
67,225
Income adjusted for cost of living
$77,665
Net moves in (IRS)
+305
Cost of living (US = 100)
87.4
Schools, risk and environment
School rating (1 to 10)
7.2
FEMA hazard risk score (0 to 100)
85.8
Flood risk score
69.9
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Wildfire risk score
14.2
Walkability (1 to 20)
6.3
Road, rail and air noise
54 dB
Questions people ask
Is Williamson County, IL overvalued?
Home prices in Williamson County, IL are well below what local incomes have historically supported: fair value is about $186,349, so the area is 15.4% undervalued.
Is Williamson County, IL a buyer's or seller's market?
Williamson County, IL is a buyer's market: homes take about 58 days to sell, listings are up 30% from a year ago, 24% of listings have had a price cut.
Are home prices going down in Williamson County, IL?
Home values in Williamson County, IL are up 0.1% over the last year.
How much do you need to earn to buy a home in Williamson County, IL?
A household needs about $34,193 a year to afford the typical home in Williamson County, IL at today's 7.18% mortgage rate (20% down, payment at 30% of income); the median household earns $67,879.