Net County-to-County Migration Flow (5-year estimate) for Mason County, KY was 102.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Mason County, KY reached a record high of 567.00000 in January of 2009 and a record low of -279.00000 in January of 2016. 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 Mason County, KY - last updated from the United States Federal Reserve on May of 2024.