• District One: Supervisor Erin Hannigan​ - Covers, essentially, the part of Vallejo that lies between Georgia Street and the Napa County line. It also includes the Napa marshes to the west and Hiddenbrooke. 
  • District Two: Supervisor Monica Brown - Includes Benicia, approximately half of Vallejo (area south of Tennessee Street to Oakwood Street and south of Georgia Street as well as the waterfront including Mare Island), the Cordelia and Green Valley area of Fairfield, almost all of the Suisun Marsh and the unincorporated areas of Green Valley and Home Acres.
  • District Three: ​​Supervisor Jim Spering​ -  Area west of I-680 and Green Valley (not Old Town Cordelia which is in District 2), includes most of Fairfield, about half of Suisun City, all of Tolenas and Suisun Valley, and Travis Air Force Base south of Travis Avenue. I-80 and Air Base Parkway form the major divider through Fairfield, with the northeast part of Fairfield in District 5. Suisun City south of Prosperity Lane and east of Emperor Drive is in District 5.
  • District Four: Supervisor John Vasquez - Includes Vacaville west of Peabody Road up to Marshall Drive, north of Marshall Drive to Nut Tree Road and then west of Interstate 80 to the Yolo County line, Dixon and the unincorporated area north of Midway to the Yolo County line.
  • District Five: Supervisor Skip Thomson - Includes the eastern section of Suisun City, south of Prosperity Lane and east of Emperor Drive to Highway 12, including Pintail Drive; the eastern part of Vacaville, including most of the 95687 area east of Peabody Road, south of Marshall Drive and east of Nut Tree Road to Interstate 80; north of Air Base Parkway in Fairfield; and south of Midway Road to include Rio Vista and the Elmira area.