Short answer: no. Home prices in St. Clair County, Illinois are up 4.8% year over year. Between August 4 and September 3, 2026, 270 homes closed at a median price of $216,500. In the same window a year earlier, 289 homes closed at a median of $206,500. What did change is speed. The typical home now takes 35 days to go under contract, up from 27 a year ago.
Key takeaways
- Median sale price rose 4.8%, from $206,500 to $216,500.
- Homes take 8 more days to sell, a jump from 27 days to 35.
- Fewer fast sales. Homes going under contract within a week fell from 32.2% to 25.2%.
- More homes sitting. Listings on the market past 60 days rose from 20.8% to 28.5%.
- It is still a seller’s market. 715 active listings against 270 sales a month is 2.65 months of supply.
So are home prices dropping in St. Clair County?
No. We pulled every residential closing in St. Clair County directly from the MLS for the last 30 days and compared it against the identical window in 2025. The median sale price rose from $206,500 to $216,500, an increase of 4.8%. The average sale price moved almost the same amount, from $243,999 to $255,368.
If you have been waiting for a crash before you buy, or holding off on listing because you assume you missed the peak, the local data does not support either position. National headlines are not describing this county.
What actually changed: homes are taking 30% longer to sell
Here is the number almost nobody is talking about. A year ago the typical St. Clair County home went under contract in 27 days. Today it takes 35. That is eight extra days, a 30% increase, and the same slowdown shows up across every measure of urgency.
| St. Clair County, IL | Aug 4 – Sep 3, 2025 | Aug 4 – Sep 3, 2026 | Change |
|---|---|---|---|
| Homes closed | 289 | 270 | -6.6% |
| Median sale price | $206,500 | $216,500 | +4.8% |
| Average sale price | $243,999 | $255,368 | +4.7% |
| Median days on market | 27 | 35 | +8 days |
| Sold in 7 days or less | 32.2% | 25.2% | -7.0 pts |
| On market past 60 days | 20.8% | 28.5% | +7.7 pts |
Read those rows together and the picture is clear. Prices held. Urgency did not.
Why days on market matters more than price right now
Price is what everyone tracks, and it is the slowest number in the market to move. It is a lagging indicator. By the time a median sale price shifts, the change that caused it happened months earlier.
Days on market moves first. It measures how long buyers are willing to wait before committing, and right now they are waiting longer and being choosier. If you want an early read on where this market is heading, watch that number, not the median.
Is St. Clair County a buyer’s or seller’s market in 2026?
It is still a seller’s market, and it is not a close call.
The measure here is months of supply, which is how long it would take to sell every listed home at the current pace of sales. St. Clair County currently has 715 active listings against 270 closings per month, which works out to 2.65 months of supply. Under four months is conventionally a seller’s market. Over six months is a buyer’s market.
So sellers still hold the advantage here. They simply hold slightly less of it than they did a year ago.
What this means if you are selling
A slower market is not a bad market. It is a different one, and it punishes one specific mistake.
In 2021 you could list at almost any number and let a bidding war fix the error. That cushion is gone. Look again at the split in the data: half of all homes still went under contract inside 35 days, while nearly three in ten sat past 60. Those two groups are not in different markets. They are priced differently.
The homes sitting are not sitting because prices are falling. They are sitting because they were priced against a market that had eight more days of patience in it. Your first two weeks decide your outcome, so price it correctly on day one. Our home seller’s guide for St. Clair County walks through the rest of the prep.
What this means if you are buying
You have leverage you did not have three years ago. Inspection contingencies are back. Seller concessions are back. A seller who has been on the market 60 days will take your call.
What you are not going to do is wait this out into a discount. Prices rose 4.8% while everyone waited for them to fall, which is exactly the pattern we broke down in the cost of waiting to buy. If the payment works today and you plan to stay five years or more, the calendar matters far less than the payment does. First time buying here? Start with our first-time home buyer’s guide to St. Clair County.
How the market differs by town
County-wide medians are useful for context and nearly useless for decisions. Of those 270 closings, Belleville accounted for 98. O’Fallon had 36, Cahokia 21, Fairview Heights 20, Mascoutah 16, Shiloh 13, and Lebanon 10.
Those are genuinely different markets with different buyers. A three-bedroom ranch in Belleville is not competing with a new build in Shiloh, and neither one is competing with a home near Scott AFB. If you are weighing two of them against each other, our comparison of Mascoutah versus O’Fallon for a Scott AFB move gets specific. It is also worth understanding how property taxes work here, because they affect your payment more than most buyers expect.
Find out what your own home is worth
The county median tells you about the county. It does not tell you about your house. Our home value tool gives you an instant estimate and a range built on current local data, with no phone call required.
Want the deeper version, including which recent sales genuinely compare to your home and what a realistic list price looks like in a 35-day market? We will build a full analysis for your address.
Frequently asked questions
Are home prices dropping in St. Clair County, IL?
No. The median sale price rose 4.8% year over year, from $206,500 to $216,500, based on all residential closings between August 4 and September 3, 2026 compared to the same window in 2025.
How long does it take to sell a house in St. Clair County?
The median home goes under contract in 35 days, up from 27 days a year ago. About one in four sells within a week, while nearly three in ten sit on the market longer than 60 days.
Is it a buyer’s or seller’s market in St. Clair County right now?
It is still a seller’s market. With 715 active listings and about 270 sales per month, the county has 2.65 months of supply. Under four months is generally considered a seller’s market.
What is the median home price in St. Clair County, IL?
The median sale price was $216,500 for homes that closed between August 4 and September 3, 2026. The average sale price over the same period was $255,368.
Is now a good time to sell a house in St. Clair County?
Yes, provided you price it correctly from day one. Inventory remains low at 2.65 months of supply and prices are still rising, but buyers are taking longer to commit, so an overpriced listing now sits rather than drawing a bidding war.
Data source: MARIS MLS, St. Clair County IL residential closings, August 4 to September 3 for both 2026 and 2025. Active inventory as of September 3, 2026. The Single Tree Team has been helping buyers and sellers across St. Clair County and the metro east for over fourteen years.
