Housing market · June 2026
Williamson County Housing Market
Monthly home prices and sales for Williamson County, Illinois — a $246,305 median sale price in June 2026, up 17.8% from a year earlier.
Williamson County housing market at a glance
Latest month with the change versus June 2025 — always the same month a year earlier, never the prior month (the data is not seasonally adjusted).
| Measure | June 2026 | Y/Y |
|---|---|---|
| Median sale price | $246,305 | +17.8% |
| Median price per square foot | $132 | +8.5% |
| Median new-listing price | $222,209 | +3.4% |
| Homes sold | 76 | -16.5% |
| New listings | 98 | -12.5% |
| Pending sales | 93 | +2.2% |
| Homes for sale (inventory) | 281 | -0.7% |
| Median days on market | 55 days | -5 days |
| Months of supply | 3.7 | +0.6 mo. |
| Sold above list price | 12.6% | -11.6 pts |
Williamson County housing market — FAQ
What is the median home price in Williamson County?+
The median home sale price in Williamson County, Illinois was $246,305 in June 2026 ($132 per square foot). Data provided by Redfin, a national real estate brokerage.
Are home prices in Williamson County rising or falling?+
As of June 2026, the median sale price in Williamson County is up 17.8% versus June 2025. Comparisons are always year over year — the data is not seasonally adjusted, so adjacent months mostly reflect the season, not the market.
How many homes sold in Williamson County?+
76 homes sold in Williamson County in June 2026; 752 sold over the trailing 12 months.
Why are some months missing?+
Months where Williamson County recorded fewer than 3 sales are not shown — medians and ratios on so few transactions are noise. Gaps stay gaps: nothing is interpolated. Counts of homes sold are kept whenever Redfin reports them.