Population Estimate, Total, Hispanic or Latino (5-year estimate) in Gregory County, SD was 77.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in Gregory County, SD reached a record high of 86.00000 in January of 2020 and a record low of 27.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Hispanic or Latino (5-year estimate) in Gregory County, SD - last updated from the United States Federal Reserve on May of 2024.