In N/A, Sully County, SD had a population of N/A people with a median age of 52.7 and a median household income of $66,875. Between N/A and N/A the population of Sully County, SD N/A from N/A to N/A, a N/A% N/A and its median household income grew from $59,688 to $66,875, a 12% increase.
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None of the households in Sully County, SD reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
Sully County, SD borders Dewey County, SD, Hughes County, SD, Hyde County, SD, Potter County, SD, and Stanley County, SD.