Net County-to-County Migration Flow (5-year estimate) for Rock Island County, IL was -47.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Rock Island County, IL reached a record high of 327.00000 in January of 2016 and a record low of -1187.00000 in January of 2011. 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 Rock Island County, IL - last updated from the United States Federal Reserve on May of 2024.