Open
Local agent spot
This featured-agent spot is open for a licensed local real estate professional in Illinois.
Advertise here →Smithton, IL · Market Data
Smithton, Illinois real estate market data.
Real estate market data for Smithton, IL (St. Clair County) — Census median home value $251,600, county listing prices down about 23.6% over the past year.
Smithton, IL is in St. Clair County, Illinois — covering the whole local market here: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 3,512, with a median household income of $114,453. Census data puts Smithton's median home value at $251,600 (all owner-occupied homes); St. Clair County's current median listing price runs $204,475, down about 23.6% over the past year.
At a glance
Smithton market snapshot
Population
3,512
Median Household Income
$114,453
Median Home Value (city)
$251,600
Median Listing Price (St. Clair County)
$204,475
Median Gross Rent
$857/mo
Price Trend (YoY)
-23.6%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. Full source list ↗
Local resources
Get help buying or selling in Smithton
What can I afford?
Estimate a comfortable price range in under a minute, then connect with a lender for real numbers.
Rough estimate only (28% of income toward housing, ~6.5% illustrative rate, 30-year term) — not a loan offer or pre-qualification. Connect with a lender for real numbers →
Open
Advertise to local buyers
Lenders, inspectors, movers, and other local pros — this spot is open.
Advertise here →Why Smithton
What makes Smithton different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Smithton's median home value — across all owner-occupied homes, not just recent sales — at $251,600. Separately, St. Clair County's current median listing price (via Realtor.com data, 2026-06-01) runs $204,475. These cover different geography (city vs. county) and different measures (assessed value vs. active listings), which is why we show both rather than picking one — full source list on our data sources page.
County Price Trend
St. Clair County's FHFA house price index shows a 5.3% annual change in 2025.
Population & Income
Smithton has an estimated population of 3,512 and a median household income of $114,453, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Smithton's Census-reported median home value works out to about 2.2x the area's median household income, and median gross rent runs roughly 9% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.
Reach Smithton buyers
Builders: feature your communities in front of Smithton buyers — learn about advertising ↗
Want to own this market? Ask about our Smithton domains — see available domains ↗
Common questions
Smithton FAQ
What are home values like in Smithton, IL?
The Census Bureau's American Community Survey puts Smithton's median home value at $251,600. St. Clair County's current median listing price runs $204,475, down about 23.6% over the past year.
What is the population of Smithton, IL?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Smithton's population at approximately 3,512.
What's the median rent in Smithton, IL?
The Census ACS estimates median gross rent in Smithton at approximately $857 per month.
What is the median household income in Smithton, IL?
Census ACS data puts the median household income in Smithton at approximately $114,453.
Is the Smithton housing market growing?
St. Clair County's FHFA house price index shows a 5.3% annual change in 2025.
Is Smithton, IL affordable relative to income?
Census ACS data puts Smithton's median home value at about 2.2 times the median household income, with median gross rent equal to roughly 9% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.
Search Smithton homes
Look up homes in Smithton
Search new construction and resale homes in Smithton — the same live MLS data agents use, not just what's summarized on this page.
Search Smithton homes ↗Get connected
Find your Smithton new home
Prices, availability, and incentives change weekly and don't always make it onto this page. Tell us your area, budget, and timeline and we'll point you to communities that fit — including options we track but haven't published here yet.
Get connected in SmithtonExplore more
Where to go next
Get the Smithton market guide
Tell us what you're looking for — buy, sell, both, invest, rent, or you're an agent, builder, vendor, or advertiser. Include where you want to buy or sell and your address if relevant, and we'll route you to the right resource.
Buyer · Seller · Both · Investor · Renter · Agent/Broker · New Home Builder · Vendor/Service Pro · Advertiser · Other