Craig Ziegel | Single Tree Team | eXp Realty | July 2026
Summer is the busiest season for real estate in St. Clair County, and 2026 is living up to that reputation. Home values are climbing, inventory is tight, and the community events that make this area worth living in are happening all around us. If you’ve been waiting to buy, sell, or simply understand where this market is headed, here’s the straightforward picture.
St. Clair County Real Estate Market: Year Over Year
The countywide median sale price in St. Clair County is $210,000 as of summer 2026. That’s up 9.9% from this time last year. For context, the Illinois statewide median is $315,000, and the state only grew 6.8% over the same period.
What that means in plain terms: St. Clair County is appreciating faster than the state average while still coming in $105,000 below the statewide price. Stronger growth at a lower entry point is a rare combination, and it’s what makes this market worth paying close attention to right now.
O’Fallon and Shiloh: The Most Competitive Submarkets
O’Fallon is the county’s busiest market. The median sold price earlier this year was $338,000, up 16.4% year over year. Homes are selling in about 45 days, and more than half are going at or above list price. Shiloh is tracking in a similar range at around $319,000, with tight inventory and consistent buyer demand driven by the proximity to Scott Air Force Base.
Belleville: The Most Opportunity in the County
Belleville deserves more credit than it typically gets. Median values sit around $155,000, with over 300 active listings. That’s the widest range of options anywhere in the county. Buyers who have been priced out of O’Fallon can still get into a solid home here with real equity upside. Downtown redevelopment is underway, a Boeing production facility is in the pipeline, and the Belleville Chamber of Commerce is actively working to bring new businesses to the area. This is a market with a long runway.
What’s Happening With Inventory
Homes for sale in Illinois dropped 7.7% year over year, and the local picture mirrors that trend. More buyers are competing for fewer homes, and well-priced listings are moving quickly. Statewide, homes are closing at an average of 99.1% of list price, with 36% selling above asking. Sellers who price accurately and present their homes well are still in a very strong position.
The Scott AFB Factor
Scott Air Force Base contributes $12.9 billion to the regional economy each year and directly employs over 13,000 military and civilian workers. Basic Allowance for Housing rates at Scott increased 5.9% for 2026, putting more buying power in the hands of military families arriving on PCS orders. PCS season runs May through August, which is exactly why summer matters so much for sellers near the base. Motivated buyers on firm timelines do not negotiate the way other buyers do.
What Makes St. Clair County Worth Living In
Market data tells one part of the story. The community tells the other part. People do not just buy a house; they choose a place to live. And right now, St. Clair County gives buyers a lot to choose from beyond the property itself.
Here is what is happening on the ground this summer.
Farmers Markets in St. Clair County, IL
Belleville Old Town Farmer’s Market
Every Saturday morning from late spring through early November, the Old Town Farmer’s Market runs at 803 S. High Street in downtown Belleville from 7:30 AM to noon. Local produce, fresh baked goods, handmade goods, and a genuinely relaxed Saturday morning atmosphere. If you are considering a move to Belleville and want to understand what the community actually feels like, start here.
O’Fallon Vine Street Market
The Vine Street Market operates from May through October at the covered open-air pavilion in O’Fallon’s downtown district near the O’Fallon Station. Nearly 70 vendors show up each week alongside live music and food trucks. This is a serious weekly gathering point that reflects the kind of walkable, locally supported downtown O’Fallon has been intentionally building for years.
Watermelon Festival at Vine Street Market, August 8, 2026: Fresh melons from local farms, themed artisan goods, a watermelon eating contest, and participation from downtown businesses. A good reason to show up if you have not been before.
Community Events in St. Clair County This Summer
Fair St. Clair: July 30 through August 1, 2026
The county fair is returning to Belle-Clair Fairgrounds Park in Belleville for the first time in over a decade. Three full days of live entertainment, motorsports, carnival rides, agricultural exhibits, food vendors, and family programming. Headline concerts feature Bret Michaels and Noah Cyrus. If you want to see what this community looks like when it pulls together, Fair St. Clair is the place to be.
What the Market Means for You Right Now
If you are selling: This is your strongest window of the year. PCS buyers are active, inventory is low, and your equity position is better than it was twelve months ago. Price it right, put effort into presentation, and the market is on your side.
If you are buying: The affordability case for St. Clair County is still one of the strongest in the entire St. Louis metro. A $210,000 median price gets you a real home in a real community, with farmers markets, festivals, and school districts people relocate here specifically to access. Getting in below the state median while outpacing the state on appreciation is not a situation that holds forever.
If you are relocating to Scott AFB: O’Fallon, Shiloh, and Mascoutah are where most military families end up, and for good reason. The on-base waitlist runs six to eighteen months, which means buying off-base usually makes better financial sense. Your 2026 BAH increase gives you more room than last year’s buyers had. Start the conversation before your report date, not after.
Frequently Asked Questions About the St. Clair County, IL Real Estate Market
What is the median home price in St. Clair County, IL in 2026?
As of summer 2026, the countywide median sale price is $210,000, up 9.9% from the same time last year.
Is it a good time to sell a home in St. Clair County?
Yes. Inventory is down 7.7% year over year, homes are closing at 99.1% of list price on average, and PCS season at Scott AFB keeps buyer demand elevated through July and August.
What are home prices like in O’Fallon, IL?
O’Fallon’s median sold price was $338,000 earlier in 2026, up 16.4% year over year. It is the most competitive submarket in St. Clair County.
What are home prices like in Belleville, IL?
Belleville’s median home value is around $155,000 with over 300 active listings, making it the most affordable and inventory-rich submarket in the county.
Where are the farmers markets in St. Clair County, IL?
The Belleville Old Town Farmer’s Market runs Saturdays from 7:30 AM to noon at 803 S. High Street. The O’Fallon Vine Street Market runs weekly from May through October at the O’Fallon Station downtown pavilion.
How does Scott AFB affect the housing market in St. Clair County?
Scott AFB generates $12.9 billion in annual economic impact and drives consistent seasonal demand from military families on PCS orders each summer. BAH rates increased 5.9% for 2026, raising buying power for incoming service members.
The people who know St. Clair County best tend to stay here. The community events are part of the reason. The schools are part of the reason. The fact that you can own a home at $210,000 in a county outpacing the state on appreciation is part of the reason too.
If you want to talk through what any of this means for your situation, reach out.
Craig Ziegel | Single Tree Team | eXp Realty
Licensed in Illinois and Missouri | (618) 772-5990 | singletreereteam@gmail.com
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Sources: Single Tree Team market data (May-June 2026), Illinois REALTORS, O’Fallon Parks and Recreation (Vine Street Market), City of Belleville (Old Town Farmer’s Market), Fair St. Clair (fairstclair.com), Scott AFB economic impact study (April 2026)
