What the Pros Know
Market Snapshot
Zip Code 61231 | Mercer County, IL
5,158
Population
YoY
202244.3
Median Age
YoY
2022$59,551
Median Household Income
YoY
2022$136,000
Median Sale Price
8.7% MoM
3.5% YoY
6/202517
Homes Sold
15.0% MoM
30.8% YoY
6/20250.6
Months Inventory
43.8% MoM
28.8% YoY
6/202550
Days on Market
15 MoM
29 YoY
6/202511
Listings
22.2% MoM
52.2% YoY
6/202591
Price per Sq Ft
10.5% MoM
1% YoY
6/2025
See 61231 on Zillow
1. Population Data from U.S. Census Bureau.
2. Sales Data provided by Redfin, a national real estate brokerage.
MoM = Month over Month. The percentage change from the previous month to the current month.
YoY = Year over Year. The percentage change from the same period the previous year to the current period.