All Employees: Professional and Business Services: Architectural, Engineering, and Related Services in Oklahoma was 12.75528 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Architectural, Engineering, and Related Services in Oklahoma reached a record high of 12.82895 in March of 2019 and a record low of 7.39527 in March of 1991. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Architectural, Engineering, and Related Services in Oklahoma - last updated from the United States Federal Reserve on March of 2024.