Oswego, IL Housing Market 2026: What Homes Actually Sell For

If you invest in or around Oswego, the number that matters is what homes actually close for, not what sellers are asking. Here is what Oswego sale prices look like right now, built from the closings Resideline tracked over the last six months, as of September 2026.

The snapshot

• •Closings tracked, last 6 months: 267
• •Median sold price, last 6 months: $410,000
• •Median sold $/sqft, last 6 months: $199
• •Middle half of sales closed between: $329,990 and $500,000

What the numbers say

Resideline tracked 267 closed sales in Oswego over the last six months, with a median closing price of $410,000. That median is the midpoint of what buyers actually paid, not what sellers hoped to get, which is why it moves differently from the asking prices you see on listing sites. The middle half of those sales closed between $329,990 and $500,000. That spread matters more than the headline median: where a specific property sits inside it decides whether the citywide number helps you or misleads you. These are the closings Resideline tracks and may differ from complete county or municipal records. Across the 258 closings with usable living area, the middle half sold between $177 and $224 per square foot.

Figures last updated September 6, 2026 from closings Resideline tracked.

Median home price in Oswego, IL (September 2026)

The median home price in Oswego is $410,000, measured across the 267 closed sales Resideline tracked over the last six months. The middle half of those sales closed between $329,990 and $500,000.

Where Oswego sale prices land

Medians hide the shape of a market. The distribution above covers the closed sales Resideline tracked in Oswego over the last six months that carry a usable sale date, trimmed to the 5th through 95th percentile, with the middle half of sales closing between $329,990 and $500,000. Among the 91 Illinois markets with a published band, Oswego's middle-half spread ($329,990 to $500,000) ranks 12th from the narrowest. Where your target property sits inside that spread matters more than the citywide median.

How long a sale takes here

• •Listed to under contract: a median of 22 days, across 90 Oswego closings Resideline tracked in the last six months
• •Contract to closing: a median of 25 days, across 41 Oswego closings Resideline tracked in the last six months

The Oswego angle

Across 267 tracked closings over the last six months, Oswego's median closed sale price was $410,000, with the middle half of sales between $329,990 and $500,000. Read together, the figures describe a market where the upper half of the middle band is compressed while ordinary sales still reach a good distance below the median. An estimate under $410,000 can be entirely routine in Oswego, while a number above $500,000 asserts the subject belongs in the market's top quarter, and matched comps should demonstrate it.

From market read to offer price

A market read is the backdrop. The decision still comes down to one property and one number: what it is actually worth and what you should pay. Every Resideline report opens with this same market snapshot for the subject's exact ZIP code, then gives you the property's value, the sold comps behind it, and a market rent estimate. Pricing a specific deal? The free ARV calculator and rental property calculator run the numbers in about a minute.

And we show our work. Every estimate is frozen while the home is for sale and graded against the real closing price after it sells. See the live accuracy dashboard for the receipts, or read how the Area Market Snapshot works.

Run any Oswego address through Resideline and you will see the local market and the property's value together, in one report.

Cite this

Using these numbers? Please cite the source and the sample size:

Source: Resideline Market Watch
Market: Oswego, IL
Geography: incorporated municipality, Census place 1756887
Data updated: September 2026
Analysis period: last six months
Tracked closings: 267
Median sold price: $410,000
Median sold $/sqft: $199 (258 qualifying)
https://resideline.com/blog/oswego-il-housing-market

Writing about this market? Paste this into your post:

<a href="https://resideline.com/blog/oswego-il-housing-market">
  <img src="https://resideline.com/images/embed/oswego-il.png" alt="Oswego, IL home sale price distribution, last six months" width="1000" style="max-width:100%;height:auto">
</a>
<p>Source: <a href="https://resideline.com/blog/oswego-il-housing-market">Resideline Market Watch</a></p>

The local market statistics in this report are calculated from closed sales tracked by Resideline. Transaction coverage may differ from complete county or municipal records.

Every local market figure on this page is computed from closed sales Resideline tracked in Oswego over the last six months, and is refreshed when the data is.