Net County-to-County Migration Flow (5-year estimate) for St. Clair County, MO was -24.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for St. Clair County, MO reached a record high of 498.00000 in January of 2017 and a record low of -341.00000 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 St. Clair County, MO - last updated from the United States Federal Reserve on May of 2024.