All Employees: Professional and Business Services in Maryland was 458.60000 Thous. of Persons in January of 2021, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services in Maryland reached a record high of 461.30000 in January of 2019 and a record low of 253.50000 in January of 1991. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services in Maryland - last updated from the United States Federal Reserve on March of 2024.