Resident Population in Shannon County, SD (DISCONTINUED) was 2.39600 Thous. of Persons in January of 2016, according to the United States Federal Reserve. Historically, Resident Population in Shannon County, SD (DISCONTINUED) reached a record high of 14.37300 in January of 2015 and a record low of 2.39600 in January of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Shannon County, SD (DISCONTINUED) - last updated from the United States Federal Reserve on April of 2026.