Net County-to-County Migration Flow (5-year estimate) for Marion County, IA was 44.00000 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, IA reached a record high of 582.00000 in January of 2019 and a record low of 44.00000 in January of 2020. 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, IA - last updated from the United States Federal Reserve on May of 2024.