- 3 bd
- 2 ba
- 1,116 sqft

The average Johnston, IA home value is $400,194, up 0.8% over the past year, and homes go to pending in around 27 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: $400,194
1-Year Value Change: +0.8%
(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 Johnston, IA is $400,194 as of September 2026. This represents a 0.2% increase compared to last month and a 0.8% increase year-over-year.
Home values in Johnston, IA have increased by 0.2% month-over-month and 0.8% year-over-year.
The median home value in Johnston, IA ($400,194) compares to: Polk County ($279,097), Iowa ($236,623), and the U.S. national median ($366,157).