All Employees: Federal Government: U.S. Postal Service in Massachusetts was 15.20000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, All Employees: Federal Government: U.S. Postal Service in Massachusetts reached a record high of 27.00000 in January of 1990 and a record low of 15.20000 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Federal Government: U.S. Postal Service in Massachusetts - last updated from the United States Federal Reserve on April of 2024.