Net County-to-County Migration Flow (5-year estimate) for St. Charles County, MO was -1116.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for St. Charles County, MO reached a record high of 3911.00000 in January of 2009 and a record low of -1384.00000 in January of 2019. 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 St. Charles County, MO - last updated from the United States Federal Reserve on May of 2024.