A board of three County Commissioners serves as the general administrative body for 87 of the 88 Ohio counties. Warren County Commissioners are elected to four year terms.

Given specific and limited authority by the Ohio Revised Code, Warren County Commissioners hold title to all county properties, serve as the sole taxing authority for the county and control county purchasing. Most importantly, the Warren County Board of Commissioners are the budget and appropriating authority for county government which includes all county agencies and elected officials (Sheriff, Auditor, Treasurer, Courts, etc.).

Warren County Commissioners have statutory authority for providing water and sewer services as well as solid waste (trash) disposal. They hold many types of public hearings including those on annexations, rezoning requests and site plan reviews. Warren County Commissioners are also charged with assuring that public assistance and Work Force Development services are readily available, as well as 911 Emergency Services and animal control. Though involved to a degree, the County Commissioners rely on the County Administrator to run the day to day operations of the county.