Data as of September 2026. Source: Realtor.com.
The Mercer County, IL real estate market currently shows 59 active listings, with 24 pending sales. Homes are averaging 32 days on the market before going under contract.
Inventory has tightened compared to last year, with 4 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 32 days on market compared to 49 days last year.
The median listing price has fallen 3.3% year-over-year, from $146,225 to $141,375.
Population: 16,896 · Density: 23.1/mi² · Median household income: $65,437
Typical home value: $130,232 · Homeownership: 80.7%
Aledo: 61231
Alexis: 61412
Joy: 61260
Keithsburg: 61442
Matherville: 61263
New Boston: 61272
New Windsor: 61465
North Henderson: 61466
Preemption: 61276
Reynolds: 61279
Seaton: 61476
Sherrard: 61281
Viola: 61486
Based on listing price changes before sale/pending as a proxy for sale-to-list dynamics. Source: Realtor.com.