Williamson County, Illinois Housing Market Prices
Williamson County Home Prices and Rent at a Glance
The median home price (often called the average home price), rent costs, affordability metrics, and housing stock characteristics for this housing market.
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Median home price 37% below the Illinois median$94,999
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Median rent 27% below the Illinois median More expensive than 79% of counties in Illinois$930
Median Home Price Map: Nearby Counties
Housing Market Overview
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Median Home Price | $94,999 | $149,936 | $248,835 |
| Price Trend (Annual %) | -0.6% | 2.5% | 7.5% |
| Median Gross Rent | $930 | $1,274 | $1,407 |
| Rent Trend (Annual %) | 4.5% | 4.1% | 5.1% |
| Household Income Trend (Annual %) | — | — | — |
The median home price in Williamson County is about 37% lower than in Illinois. Rent is about 27% lower than the Illinois average.
Median Home and Rent Price Trends
Median Home Prices, 2015-2024
Median Rent Prices, 2015-2024
Home prices and rent are moving in opposite directions in Williamson County: home prices fell about 0.6% a year while rent rose about 4.5% a year. That is an unusual pattern worth watching.
Median rent in Williamson County rose about 43.6% between 2015 and 2024, from $648 to $930. Over the same span, rent in Illinois rose about 40.4%.
Affordability
On average, housing unit costs 1.4 yearly household incomes in Williamson County.
Buying the median-priced home in Williamson County costs roughly 8.5 years of rent at the median monthly rate. That is a relatively low price-to-rent ratio, which tends to favor buying over renting in Williamson County. The price-to-rent ratio in Illinois is about 9.8.
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Median Home Price | $94,999 | $149,936 | $248,835 |
| Median Household Income | $65,527 | $84,042 | $80,455 |
| Price-to-Income Ratio | 1.4 | 1.8 | 3.1 |
Home Prices vs Income Over Time
Between 2015 and 2024, the median home price in Williamson County fell about 14.9%, while median household income rose about 57.5% between 2009 and 2025 — income grew faster than the home price.
Income Growth vs Housing Cost Growth (Year-over-Year %)
Compare income and housing cost trends.
Occupancy & Tenure
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Homeownership Rate | 63.8% | 61.9% | 58.5% |
| Rental Rate | 26.5% | 30.4% | 31.2% |
| Vacancy Rate | 9.7% | 7.7% | 10.2% |
| Median Tenure (years) | 15.0 | 16.0 | 15.0 |
| Median Year Moved In | 2011 | 2010 | 2011 |
Williamson County has a homeownership rate of 63.8%, higher than the Illinois average of 61.9%. Its housing vacancy rate is 9.7%, compared with 7.7% in Illinois.
Housing Stock
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Average Household Size | 2.23 people | 2.46 people | 2.53 people |
| Median Structure Built Year | 1980 | 1969 | 1978 |
| Median Number of Rooms | 5.8 | 5.6 | 5.5 |
The typical housing unit in Williamson County was built around 1980. On average, 2.2 people live in a home with about 5.8 rooms, staying for about 15.0 years on average.
Williamson County, IL Housing Compared With Nearby Counties
Williamson County, IL is the largest of the 4 counties compared here, 66,874 residents against a local median of 37,318. The measure that sets Williamson County, IL apart most is median home price: $94,999, 66% above the local median of $57,217.
Median rent tells the same story from another angle: $930 against a local median of $782, 19% above it. The counties themselves sit within $20,900 of each other on median home price, a tighter band than the gap between any of them and Williamson County, IL, which makes it a genuine outlier here rather than one end of a wide local spread. Williamson County, IL has the highest median home price of the 4 areas compared here.
| Area | Population | Median home price | Median rent | Homeownership |
|---|---|---|---|---|
| Williamson County, IL | 66,874 | $94,999 #1/4 | $930 #1/4 | 70.7% #3/4 |
| Franklin County, IL | 37,318 | $48,166 | $803 | 74.1% |
| Saline County, IL | 23,213 | $57,217 | $725 | 72.5% |
| Jackson County, IL | 53,061 | $69,066 | $782 | 50.0% |
Frequently Asked Questions
Common questions about the housing market in Williamson County, Illinois.
What is the median home price in Williamson County, Illinois?
The median home price in Williamson County, Illinois is $94,999, lower than the Illinois average of $149,936.
What is the average home price in Williamson County, Illinois?
The typical home price in Williamson County, Illinois, reported as the median sale price, is $94,999. The median is used instead of a mathematical average because it is not skewed by a small number of very expensive or very cheap homes, so it better reflects what a typical buyer pays.
What is the median rent in Williamson County, Illinois?
The median gross rent in Williamson County, Illinois is $930 per month, lower than the Illinois average of $1,274.
What was the median gross rent in Williamson County in 2020?
In 2020, the median gross rent in Williamson County, Illinois was $725 per month.
What is the price-to-rent ratio in Williamson County, Illinois?
The price-to-rent ratio in Williamson County, Illinois is about 8.5, meaning it would take roughly 8.5 years of rent payments at the median rent to equal the median home price. That is a relatively low price-to-rent ratio, which tends to favor buying over renting in Williamson County.
Are home prices or rent rising faster in Williamson County, Illinois?
Home prices and rent are moving in opposite directions in Williamson County: home prices fell about 0.6% a year while rent rose about 4.5% a year. That is an unusual pattern worth watching.
What is the homeownership rate in Williamson County, Illinois?
63.8% of households in Williamson County, Illinois own their home, higher than the Illinois average of 61.9%.
What is the vacancy rate in Williamson County, Illinois?
The housing vacancy rate in Williamson County, Illinois is 9.7%, higher than the Illinois average of 7.7%.
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