- 3 bd
- 3 ba
- 2,106 sqft

The average Mercer County, IL home value is $175,685, up 7.8% over the past year. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $175,685
1-Year Value Change: +7.8%
(Data through September 30, 2026)
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The median home value in Mercer County, IL is $175,685 as of September 2026. This represents a 0.5% increase compared to last month and a 7.8% increase year-over-year.
The median home value in Mercer County, IL ($175,685) compares to Illinois ($295,943) and the U.S. national median ($366,157).
The cities with the highest median home values in Mercer County, IL include: Sherrard ($253,529), Reynolds ($200,179), Aledo ($176,719), Viola ($175,943), Joy ($173,389). These cities represent the most expensive areas within the county.