Resident Population in Aurora County, SD was 2.75200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Aurora County, SD reached a record high of 4.50000 in January of 1971 and a record low of 2.70100 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Aurora County, SD - last updated from the United States Federal Reserve on April of 2026.