The eight-member Board of County Supervisors, comprised of seven District Supervisors and a county-wide Chair At-Large, is elected by the residents of Prince William County every four years. The policy-making body of the county government, it adopts local laws, sets policies, determines financial priorities, and makes local land use decisions. 

The Board appoints a County Executive to act as the chief administrative officer and oversee the county government on a day-to-day basis.  ​Additionally, the Board appoints residents to serve on over 70 Boards, Committees & Commissions.  These community members impact our county in a variety of ways including establishing priorities, determining budget priorities, and advising on specific issues such as libraries, drinking water, human rights, zoning regulations, land use planning and animal welfare.