St. Clair County, Illinois Housing Market Prices
St. Clair 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 19% below the Illinois median More expensive than 72% of counties in Illinois$121,433
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Median rent 14% below the Illinois median More expensive than 91% of counties in Illinois$1,089
Median Home Price Map: Nearby Counties
Housing Market Overview
| Metric | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Median Home Price | $121,433 | $149,936 | $248,835 |
| Price Trend (Annual %) | 4.7% | 2.5% | 7.5% |
| Median Gross Rent | $1,089 | $1,274 | $1,407 |
| Rent Trend (Annual %) | 3.6% | 4.1% | 5.1% |
| Household Income Trend (Annual %) | — | — | — |
The median home price in St. Clair County is about 19% lower than in Illinois. Rent is about 14% lower than the Illinois average.
Median Home and Rent Price Trends
Median Home Prices, 2015-2024
Median Rent Prices, 2015-2024
Both home prices and rent are rising in St. Clair County, up about 4.7% and 3.6% a year respectively. Home prices are changing faster.
Median rent in St. Clair County rose about 37.0% between 2015 and 2024, from $795 to $1,089. Over the same span, rent in Illinois rose about 40.4%.
Affordability
On average, housing unit costs 1.6 yearly household incomes in St. Clair County.
Buying the median-priced home in St. Clair County costs roughly 9.3 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 St. Clair County. The price-to-rent ratio in Illinois is about 9.8.
| Metric | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Median Home Price | $121,433 | $149,936 | $248,835 |
| Median Household Income | $73,876 | $84,042 | $80,455 |
| Price-to-Income Ratio | 1.6 | 1.8 | 3.1 |
Home Prices vs Income Over Time
Between 2015 and 2024, the median home price in St. Clair County rose about 40.2%, while median household income rose about 48.0% 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 | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Homeownership Rate | 59.7% | 61.9% | 58.5% |
| Rental Rate | 27.5% | 30.4% | 31.2% |
| Vacancy Rate | 12.8% | 7.7% | 10.2% |
| Median Tenure (years) | 15.0 | 16.0 | 15.0 |
| Median Year Moved In | 2011 | 2010 | 2011 |
St. Clair County has a homeownership rate of 59.7%, lower than the Illinois average of 61.9%. Its housing vacancy rate is 12.8%, compared with 7.7% in Illinois.
Housing Stock
| Metric | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Average Household Size | 2.47 people | 2.46 people | 2.53 people |
| Median Structure Built Year | 1969 | 1969 | 1978 |
| Median Number of Rooms | 5.8 | 5.6 | 5.5 |
The typical housing unit in St. Clair County was built around 1969. On average, 2.5 people live in a home with about 5.8 rooms, staying for about 15.0 years on average.
St. Clair County, IL Housing Compared With Nearby Counties
St. Clair County, IL is the 2nd largest of the 4 counties compared here, 253,661 residents against a local median of 35,033. There is no headline here. Every measure below sits within 15% of the median across the nearest counties, which makes St. Clair County, IL an unremarkable member of its own neighbourhood rather than an outlier in it.
The largest of those small differences is homeownership, 11% below the local median at 68.4% against 76.6%. St. Clair County, IL has the 4th highest homeownership of the 4 areas compared here.
| Area | Population | Median home price | Median rent | Homeownership |
|---|---|---|---|---|
| St. Clair County, IL | 253,661 | $121,433 #2/4 | $1,089 #1/4 | 68.4% #4/4 |
| Monroe County, IL | 35,033 | $208,158 | $1,042 | 84.7% |
| Madison County, IL | 264,024 | $116,579 | $1,024 | 74.2% |
| Randolph County, IL | 30,051 | $49,530 | $779 | 76.6% |
Frequently Asked Questions
Common questions about the housing market in St. Clair County, Illinois.
What is the median home price in St. Clair County, Illinois?
The median home price in St. Clair County, Illinois is $121,433, lower than the Illinois average of $149,936.
What is the average home price in St. Clair County, Illinois?
The typical home price in St. Clair County, Illinois, reported as the median sale price, is $121,433. 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 St. Clair County, Illinois?
The median gross rent in St. Clair County, Illinois is $1,089 per month, lower than the Illinois average of $1,274.
What was the median gross rent in St. Clair County in 2020?
In 2020, the median gross rent in St. Clair County, Illinois was $880 per month.
What is the price-to-rent ratio in St. Clair County, Illinois?
The price-to-rent ratio in St. Clair County, Illinois is about 9.3, meaning it would take roughly 9.3 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 St. Clair County.
Are home prices or rent rising faster in St. Clair County, Illinois?
Both home prices and rent are rising in St. Clair County, up about 4.7% and 3.6% a year respectively. Home prices are changing faster.
What is the homeownership rate in St. Clair County, Illinois?
59.7% of households in St. Clair County, Illinois own their home, lower than the Illinois average of 61.9%.
What is the vacancy rate in St. Clair County, Illinois?
The housing vacancy rate in St. Clair County, Illinois is 12.8%, higher than the Illinois average of 7.7%.
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