Contact Information for the Gwinnett County Elected Officials and Court Officials Sheriff : Keybow Taylor (D) Tax Commissioner: Tiffany Porter (D) District Attorney : Patsy Austin-Gaston (D) Solicitor General : Brian Whiteside (D) Probate Court Judge : Chris Ballar (nonpartisan) Clerk of State/Superior Court : Tiana P. Garner (D) Chief Magistrate : Kristina Blum (Nonpartisan) Download Google Earth (required for detailed map)