All Employees: Government: U.S. Postal Service in Massachusetts was 15.70000 Thous. of Persons in February of 2022, according to the United States Federal Reserve. Historically, All Employees: Government: U.S. Postal Service in Massachusetts reached a record high of 28.20000 in December of 1998 and a record low of 15.30000 in June of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Government: U.S. Postal Service in Massachusetts - last updated from the United States Federal Reserve on April of 2024.