All Employees: Professional and Business Services: Scientific Research and Development Services in California was 187.90000 Thous. of Persons in March of 2022, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Scientific Research and Development Services in California reached a record high of 187.90000 in March of 2022 and a record low of 70.10000 in September of 1992. 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 California - last updated from the United States Federal Reserve on April of 2024.