Resident Population in Spink County, SD was 6.16600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Spink County, SD reached a record high of 10.60000 in January of 1971 and a record low of 6.16600 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Spink County, SD - last updated from the United States Federal Reserve on May of 2024.