Illinois Housing Market 2026: Prices, Sales & Trends

Illinois's median closed sale price is $324,900, measured across 79,984 closings Resideline tracked statewide over the last six months, as of September 2026. These are closings we track directly, a measured sample rather than a complete state record, which is why we can show the detail below at all. A statewide median hides how far apart Illinois's markets sit. Among its highest-volume markets, Naperville carries the highest median and Decatur the lowest. That gap is the reason a state figure belongs in a market briefing rather than in an offer: it describes the middle of the distribution, not a price you can underwrite against.

Illinois's largest markets by closing volume

Volume matters as much as price here. Higher transaction volume generally provides more potential comparable sales, although the usable set for a specific property still depends on property type, size, condition, location and recency.

Rankings for Illinois: best places to buy rental property in Illinois orders cities by entry price and closings tracked, cheapest cities to buy a house in Illinois adds each city's price per square foot for houses, realized appreciation and days to contract, and Cap Rate by City ranks the Illinois cities Resideline tracks by gross rental yield.

Figures last updated September 5, 2026 from closings Resideline tracked.

How to price a specific Illinois property

Work from the closings, not from the state number. Start with sales of the same property type inside a tight radius, match size and condition before you widen anything, and treat the figures above as a sanity check on the answer rather than as the answer. A statewide median is useful for spotting which markets deserve attention; it will mis-price an individual address in either direction.

Run any Illinois address through Resideline and you will get the local comparable set and the property's value together, in one report.