Net County-to-County Migration Flow (5-year estimate) for Washington County, CO was 488.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Washington County, CO reached a record high of 540.00000 in January of 2017 and a record low of 2.00000 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 Washington County, CO - last updated from the United States Federal Reserve on May of 2024.