Net County-to-County Migration Flow (5-year estimate) for Sumter County, SC was -1303.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Sumter County, SC reached a record high of -572.00000 in January of 2015 and a record low of -2175.00000 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Net County-to-County Migration Flow (5-year estimate) for Sumter County, SC - last updated from the United States Federal Reserve on May of 2024.