Number of Private for All Industries in Middlesex County, MA was 60603.00000 Establishments in July of 2023, according to the United States Federal Reserve. Historically, Number of Private for All Industries in Middlesex County, MA reached a record high of 60922.00000 in April of 2023 and a record low of 35609.00000 in October of 1992. Trading Economics provides the current actual value, an historical data chart and related indicators for Number of Private for All Industries in Middlesex County, MA - last updated from the United States Federal Reserve on May of 2024.