- 3 bd
- 1 ba
- 1,472 sqft

The average Alton, IL home value is $102,378, up 3.6% over the past year, and homes go to pending in around 16 days. (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: $102,378
1-Year Value Change: +3.6%
(Data through September 30, 2026)
Zillow is more than a place to browse homes. It’s a place to connect with a local agent, explore financing solutions, schedule home tours, understand your buying and selling power, and more.
The median home value in Alton, IL is $102,378 as of September 2026. This represents a 0.1% decrease compared to last month and a 3.6% increase year-over-year.
Home values in Alton, IL have decreased by 0.1% month-over-month and 3.6% year-over-year.
The median home value in Alton, IL ($102,378) compares to: Madison County ($197,597), Illinois ($295,943), and the U.S. national median ($366,157).