Net County-to-County Migration Flow (5-year estimate) for Hillsborough County, NH was 3888.00000 Persons in January of 2020, according to the United States Federal Reserve. Historically, Net County-to-County Migration Flow (5-year estimate) for Hillsborough County, NH reached a record high of 5710.00000 in January of 2018 and a record low of -3053.00000 in January of 2013. 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 Hillsborough County, NH - last updated from the United States Federal Reserve on May of 2024.