All Employees: Professional and Business Services: Scientific Research and Development Services in Pennsylvania was 47.06071 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Scientific Research and Development Services in Pennsylvania reached a record high of 48.73334 in October of 2023 and a record low of 20.23472 in December of 1998. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Scientific Research and Development Services in Pennsylvania - last updated from the United States Federal Reserve on March of 2024.