Grundy County, IL Housing Market Brief
county · IL · as of August 2026
What is Grundy County, IL’s Alpha Score?
The Alpha Score is a composite 0–100 index of market strength, a weighted blend of five dimensions. See the methodology.
Where is Grundy County, IL in its market cycle?
Grundy County, IL is classified as Growing — strengthening, with scores rising over recent months. This is a classification of recent (1–12 month) momentum, not a price forecast.
What’s the forecast for Grundy County, IL?
Our model forecasts Grundy County, IL’s home prices to rise about 7.6% over the next 12 months (medium confidence).
This is a separate, forward-looking view — not the cycle classification above. See how past forecasts performed on the track record, or the full local forecast with its confidence range on the market page.
Grundy County, IL housing market data
| Metric | Value | YoY |
|---|---|---|
| Median Sale Price | $309K | ▼ -7.7% |
| Median Days on Market | 47 days | ▲ +11.9% |
| Months of Supply | 2.6 | ▲ +4% |
| Homes for Sale | 169 | ▲ +11.9% |
| Homes Sold | 67 | ▲ +6.4% |
| Median Price / Sq Ft | $184 | ▲ +5.5% |
How has Grundy County, IL’s Alpha Score moved?
Markets like Grundy County, IL
Frequently asked questions
Is Grundy County, IL a buyer's or seller's market?
As of August 2026, Grundy County, IL is classified as a Seller's Market, based on its Alpha Score of 61 out of 100. The classification reflects current price, inventory, affordability, economic, and rental-yield conditions.
Are home prices rising or falling in Grundy County, IL?
The median sale price in Grundy County, IL is $309K, having fallen 7.7% over the past year.
How affordable is Grundy County, IL?
Grundy County, IL scores 76 out of 100 on affordability — relatively affordable relative to local incomes and prevailing mortgage rates compared with other counties.
What's driving Grundy County, IL's Alpha Score?
Grundy County, IL's strongest dimension is Affordability (76/100) and its weakest is Economic Strength (43/100). The Alpha Score is a weighted blend of all five dimensions.
Want the live, interactive view of Grundy County, IL? Open the full market dashboard — charts, ZIP-level drill-down, and watchlist tracking. Explore the map or read the methodology.