The Gwinnett County Board of Commissioners sets direction and formulates policies for the county government, adopts the budget, authorizes expenditures, and approves or disapproves specific actions, such as rezoning of private property. The Board also appoints members to a number of authorities and boards with which the Board of Commissioners is affiliated.
Voters in each of four districts elect a part-time District Commissioner. The full-time Commission Chairman is elected countywide. Terms are for four years, but staggered so the chairman and two commissioners are elected during one election cycle and two years later the other two commissioners are elected.