Crystal Lake, IL Housing Market 2026: What Homes Actually Sell For

If you invest in or around Crystal Lake, the number that matters is what homes actually close for, not what sellers are asking. Here is what Crystal Lake 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: 316
• •Median sold price, last 6 months: $356,750
• •Median sold $/sqft, last 6 months: $193
• •Middle half of sales closed between: $279,900 and $435,000

What the numbers say

Resideline tracked 316 closed sales in Crystal Lake over the last six months, with a median closing price of $356,750. 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 $279,900 and $435,000. 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 307 closings with usable living area, the middle half sold between $163 and $220 per square foot.

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

Median home price in Crystal Lake, IL (September 2026)

The median home price in Crystal Lake is $356,750, measured across the 316 closed sales Resideline tracked over the last six months. The middle half of those sales closed between $279,900 and $435,000.

Where Crystal Lake sale prices land

Medians hide the shape of a market. The distribution above covers the closed sales Resideline tracked in Crystal Lake 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 $279,900 and $435,000. Among the 91 Illinois markets with a published band, Crystal Lake's middle-half spread ($279,900 to $435,000) ranks 18th from the narrowest. Where your target property sits inside that spread matters more than the citywide median. Measured as the ratio of the upper to the lower quartile, its middle-half spread ranks in the 32nd percentile of the 2,187 US markets in Resideline's national Market Watch set, on data as of September 4, 2026.

How long a sale takes here

• •Listed to under contract: a median of 18 days, across 104 Crystal Lake closings Resideline tracked in the last six months
• •Contract to closing: a median of 7 days, across 39 Crystal Lake closings Resideline tracked in the last six months

The Crystal Lake angle

With 316 closings on record, higher transaction volume creates more potential comps, but the usable set for an individual property still depends on property type, size, condition, location, and recency. The band between $279,900 and $435,000 is ordinary in width relative to other markets we track, which makes $356,750 a serviceable orientation point. Its useful role is diagnostic: if a closely matched set lands far from the midpoint, you should be able to name the property feature that explains it. The band is uneven.

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 Crystal Lake 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: Crystal Lake, IL
Geography: incorporated municipality, Census place 1717887
Data updated: September 2026
Analysis period: last six months
Tracked closings: 316
Median sold price: $356,750
Median sold $/sqft: $193 (307 qualifying)
https://resideline.com/blog/crystal-lake-il-housing-market

Writing about this market? Paste this into your post:

<a href="https://resideline.com/blog/crystal-lake-il-housing-market">
  <img src="https://resideline.com/images/embed/crystal-lake-il.png" alt="Crystal Lake, IL home sale price distribution, last six months" width="1000" style="max-width:100%;height:auto">
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<p>Source: <a href="https://resideline.com/blog/crystal-lake-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 Crystal Lake over the last six months, and is refreshed when the data is. The closings we track within the Crystal Lake city limits are not limited to listing-service sales: they also include foreclosure deeds, estate and family transfers, and other off-market sales that portal medians exclude, which is why 16% of the 316 closings in this window never appeared on a listing service, and the median of MLS-listed sales alone was $369,900.