Photo: Robert Lawton · CC BY-SA 2.5480 homes sold in O'Fallon in the last year, at a typical $349K
Almost every sale is a house. Below: what each kind of home sells for, what your budget buys, the best months to buy, how hard you’ll have to bid, and a shortcut to every site where O'Fallon homes are listed.
Every place O'Fallon homes are listed, in one stop
We don’t copy listings: the agents’ sites have the photos and the latest price changes. Set what you want once and we open each site already filtered to O'Fallon.
For sale
Rent
New, land & open houses
Links open the listing sites; TownRatings isn’t paid for them and doesn’t rank one above another. Rentals and government-owned homes come from sources outside the MLS.
4% of O'Fallon’s sales are condos, at $187K less than a house
447 houses and 17 condos sold in the year to May 2026. Houses sell faster and draw more bidding wars.
typical sale · 447 sold in 12 months
- Per square foot
- $148IL $180
- Days to sell
- 38
- Sold over asking
- 43%
- Listings with a price cut
- 19%
typical sale · 17 sold in 12 months
- Per square foot
- $135IL $251
- Days to sell
- 49
- Sold over asking
- 18%
- Listings with a price cut
- 25%
Multi-family (2–4 units): 3 sold, typical $362K
Townhouses: 13 sold, typical $217K
Too few sales in 12 months for reliable figures.
About as many homes sell as usual, at 1.8 times the 2016 price
480 sales in the last year, against 772 in 2021 and a low of 411 in 2013. The typical sale went from $198K in 2016 to $349K.
Source: Redfin Data Center, MLS sales. Typical price and $/sq ft are the monthly medians, weighted by sales.
What $350K buys in O'Fallon
Check a listing against what O'Fallon homes sold for
Against the town’s median price per square foot over the last 12 months. A rough check: condition, lot and location within town move a price more than this can see.
Bidding wars in O'Fallon are more common than before the pandemic, but half fewer homes come up for sale
We read every month of O'Fallon’s home sales since 2013 so you don’t have to. Each figure covers 12 months, because a single month in a town is too few sales to mean much. Latest: the year to May 2026, 480 sales.
If you’re buying in O'Fallon
- Shop in March. It brings about 60 new listings a month, close to the busiest month, with fewer bidding wars (27% over asking).
- Less room to haggle. Only 19% of listings cut their price, against 26% before the pandemic.
- Bid near asking. Buyers paid 100.3% of the list price on average; 41% paid over.
Spring brings both the most homes and the most bidding wars
April has the most new listings (about 70 a month), but May is the most competitive: 37% of May sales close over asking. March offers nearly as much choice with fewer homes bid up (27%). February has the least competition (21%).
Averages for each calendar month, 2015 on.
Nearly as heated as 2021, and about like Illinois as a whole
| O'Fallon now | 2017–19 | 2021 peak | IL now | |
|---|---|---|---|---|
| Sold over askingShare of sales that closed above the list price | 41% | 16% | 51% | 37% |
| Gone within two weeksShare of homes under contract within 14 days | — | — | — | 46% |
| Listings with a price cutShare of homes for sale that cut their price | 19% | 26% | 13% | 19% |
| Price paid vs. askingAverage sale price ÷ list price | 100.3% | 98% | 101% | 99.2% |
| Days to sellMedian days from listing to contract | 38 | 58 | 38 | 49 |
82 homes for sale on a typical day
That’s 1.3 times the 2023 low (62), 48% fewer than in 2017–19 and well under 2016’s 203.
1 in 5 listings has cut its price
19% in the last year, against 26% in 2017–19 and 19% across Illinois.
Since 2019, houses are up 60%, condos 69%
A house typically sold for $364K in the last year (447 sales), a condo for $178K (17).
Median sale price, weighted by sales each month. Years with fewer than 4 sales of a type are left out.
O'Fallon ranks 122nd of 324 busy Illinois markets for bidding wars
Share of sales over asking in the last year, among towns with 60 or more sales. O'Fallon is in the middle of the pack.
Source: Redfin Data Center, city market tracker, January 2013 to May 2026 (MLS sales, not seasonally adjusted). Ratios are weighted by homes sold; price cuts by homes for sale.
Owning the typical O'Fallon home costs about $2,394 a month
Price: O'Fallon’s typical sale, last 12 months. Property tax at O'Fallon’s 2% (median bill ÷ median value, Census ACS); insurance at 0.35% of price a year. Before PMI, HOA dues, upkeep and the tax deduction. Whether O'Fallon is affordable on local pay is on Cost of living.
Six things worth knowing
New listings in April
The month with the most choice. December has the fewest, about 24.
Best time to buyProperty tax, a year
Of a home’s value: the median bill over the median home value. On a $349K home, about $6,880 a year.
Taxes vs. neighborsSchools
The schools grade for O'Fallon, from test results, graduation and how much students grow.
Schools in O'FallonTypical commute
The average one-way trip to work for people who live in O'Fallon.
Work & commuteCheck the flood map
Flood insurance isn’t in a standard policy, and lenders require it in FEMA flood zones. Check the address before you make an offer.
Natural hazardsLook up any property
Assessed value, lot size and every past sale of a home you’re eyeing are public, at the town or county assessor and the registry of deeds.
Fairview Heights, Swansea, Lebanon and Belleville sell for less a square foot
The busier markets within 25 miles of O'Fallon, by what sold. Prices, taxes and how far a paycheck goes next door are on Cost of living.
| Sold | Typical sale | $/sq ft | Over asking | Days to sell | |
|---|---|---|---|---|---|
| Belleville | 698 | $153K | $103 | 38% | 43 |
| O'Fallon | 480 | $349K | $148 | 41% | 38 |
| Fairview Heights | 240 | $233K | $129 | 48% | 36 |
| Swansea | 188 | $284K | $129 | 36% | 42 |
| Shiloh | 186 | $357K | $147 | 48% | 48 |
| Caseyville Township | 70 | $270K | $146 | 30% | 83 |
| Lebanon | 64 | $214K | $129 | 37% | 51 |
Redfin Data Center, June 2025 to May 2026. Towns with fewer than 20 sales are left out, and Redfin doesn’t report every town separately.
Post your home to O'Fallon, free
Selling it yourself, renting out an apartment or looking for a roommate? Post it to O'Fallon. People who follow the town see it, and so do people comparing O'Fallon with their own town. No commission, no listing fee.
Questions about buying a home in O'Fallon
What do homes sell for in O'Fallon, IL?
480 homes sold in the year to May 2026 at a typical $349K, $148 a square foot. Houses sold for about $364K, condos for about $178K.
Is O'Fallon a buyer’s or seller’s market?
A seller’s market: 101 homes were for sale in May 2026 and 57 sold, about 1.8 months of supply. Buyers paid 100.3% of asking on average, and 19% of listings cut their price.
When is the best time to buy in O'Fallon?
April brings the most new listings. The sales history shows which months have fewer bidding wars.
How much are property taxes in O'Fallon?
About 2% of a home’s value a year. On a $349K home that’s near $6,880.
Where can I see homes for sale in O'Fallon?
Zillow, Redfin, Realtor.com and Homes.com all carry O'Fallon’s MLS listings; the search links above open each one filtered to O'Fallon.
Sales, prices, days on market and listings: Redfin Data Center (MLS, monthly, not seasonally adjusted). Property tax rate: Census American Community Survey. Two-bedroom rent: HUD Fair Market Rent. Typical home value: Zillow Home Value Index. Schools grade: TownRatings (how grades work).