Home › Counties › Mercer County, IL
The median home value in Mercer County, IL is $175,928 as of 2026-07-31, up 7.89% from a year earlier.
Median Home Value
$175,928
Year-over-Year
+7.89%
National Rank
#2254 of 3071
Mercer County ranks 37th out of 102 counties in IL by median home price, and is -24.9% below the U.S. national median of $234,352. Within IL, the typical county has a median home value of $160,090, making Mercer County +9.9% above the IL state median.
Households here earn a median of $74,182 a year against a typical home value of $175,928 — a price-to-income ratio of 2.4×, comfortably below the 3× income level generally considered manageable. That is less affordable than roughly 10% of U.S. counties. (How this is calculated.)
The median home value in Mercer County is $175,928. That's up 7.89% from a year earlier. That is about 24.9% below the U.S. national county median of $234,352, and makes Mercer County the 37th most expensive of 102 counties in Illinois.
Median household income here is $74,182, so a typical home costs about 2.4× annual household earnings — relatively affordable compared with other U.S. counties.
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