The Office of the County Administrator is the highest level management office of the Frederick County government. The County Administrator serves as the chief administrative officer of Frederick County.

The County Administrator directs and supervises the day-to-day operations of all county departments and agencies which are under the direct control of the Board of Supervisors, pursuant to county ordinances and regulations. Specifically, the County Administrator serves as the primary point of contact for citizens seeking information regarding county activities; manages of all county departments; and develops recommendations for the Board of Supervisors relative to the operations of the county.

The Office of the County Administrator also provides administrative support to the Board and implements its directives with regard to Board agendas, meetings, resolutions and constituent services. Additionally, the County Administrator serves as the clerk to the Board of Supervisors, as well as official liaison to the Constitutional Officers, the Judiciary, and state and regional agencies.