- 3 bd
- 3 ba
- 2,896 sqft

The average Keystone, SD home value is $620,968, up 0.6% 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: $620,968
1-Year Value Change: +0.6%
(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 Keystone, SD is $620,968 as of September 2026. This represents a 0.1% decrease compared to last month and a 0.6% increase year-over-year.
Home values in Keystone, SD have decreased by 0.1% month-over-month and 0.6% year-over-year.
The median home value in Keystone, SD ($620,968) compares to: Pennington County ($363,102), South Dakota ($317,874), and the U.S. national median ($366,157).