Net County-to-County Migration Flow (5-year estimate) for Marion County, IL was -529.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Marion County, IL reached a record high of -445.00000 in January of 2014 and a record low of -1385.00000 in January of 2009. 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 Marion County, IL - last updated from the United States Federal Reserve on May of 2024.