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The average Sully County, SD home value is $271,237, down 0.2% 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: $271,237
1-Year Value Change: -0.2%
(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 Sully County, SD is $271,237 as of September 2026. This represents a 0.4% decrease compared to last month and a 0.2% decrease year-over-year.
The median home value in Sully County, SD ($271,237) compares to South Dakota ($317,874) and the U.S. national median ($366,157).
The cities with the highest median home values in Sully County, SD include: Onida ($252,831). These cities represent the most expensive areas within the county.