Net County-to-County Migration Flow (5-year estimate) for Polk County, NE was 57.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Polk County, NE reached a record high of 96.00000 in January of 2014 and a record low of -194.00000 in January of 2010. 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 Polk County, NE - last updated from the United States Federal Reserve on May of 2024.