Net County-to-County Migration Flow (5-year estimate) for Blaine County, MT was -209.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Blaine County, MT reached a record high of -47.00000 in January of 2017 and a record low of -430.00000 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 Blaine County, MT - last updated from the United States Federal Reserve on May of 2024.