Mount Prospect, IL Housing Market 2026: What Homes Actually Sell For

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

The snapshot

• •Closings tracked, last 6 months: 361
• •Median sold price, last 6 months: $430,000
• •Median sold $/sqft, last 6 months: $262
• •Middle half of sales closed between: $307,000 and $540,000

What the numbers say

Resideline tracked 361 closed sales in Mount Prospect over the last six months, with a median closing price of $430,000. 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 $307,000 and $540,000. 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 330 closings with usable living area, the middle half sold between $223 and $312 per square foot.

Figures last updated October 3, 2026 from closings Resideline tracked.

Median home price in Mount Prospect, IL (October 2026)

The median home price in Mount Prospect is $430,000, measured across the 361 closed sales Resideline tracked over the last six months. The middle half of those sales closed between $307,000 and $540,000.

Where Mount Prospect sale prices land

Medians hide the shape of a market. The distribution above covers the closed sales Resideline tracked in Mount Prospect 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 $307,000 and $540,000. Among the 91 Illinois markets with a published band, Mount Prospect's middle-half spread ($307,000 to $540,000) ranks 44th 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 59th percentile of the 2,230 US markets in Resideline's national Market Watch set, on data as of October 3, 2026.

How long a sale takes here

• •Listed to under contract: a median of 26 days, across 126 Mount Prospect closings Resideline tracked in the last six months
• •Contract to closing: a median of 12 days, across 71 Mount Prospect closings Resideline tracked in the last six months

The Mount Prospect angle

Mount Prospect recorded 361 tracked closings over the last six months, with the median closed sale price at $430,000 and the middle half of sales between $307,000 and $540,000. The spread is close to typical for the markets we track, which puts the median in a useful middle position: informative enough to orient a valuation, too broad to finish one. Half of all tracked closings landed inside that band, a quarter below it and a quarter above it, so a defensible estimate can sit a long way from $430,000 when the comps support it. Match closed sales to the subject first, then ask whether the finished number sits believably within the market's middle half.

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, rehab cost estimator, BRRRR 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 Mount Prospect 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: Mount Prospect, IL
Geography: incorporated municipality, Census place 1751089
Data updated: October 2026
Analysis period: last six months
Tracked closings: 361
Median sold price: $430,000
Median sold $/sqft: $262 (330 qualifying)
https://resideline.com/blog/mt-prospect-il-housing-market

Writing about this market? Paste this into your post:

<a href="https://resideline.com/blog/mt-prospect-il-housing-market">
  <img src="https://resideline.com/images/embed/mt-prospect-il.png" alt="Mount Prospect, 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/mt-prospect-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 Mount Prospect over the last six months, and is refreshed when the data is. The closings we track within the Mount Prospect 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 25% of the 361 closings in this window never appeared on a listing service, and the median of MLS-listed sales alone was $451,500.