A title for civic magistrates in certain Greek cities, notably Thessalonica. When Paul and Silas caused an uproar in Thessalonica, the mob dragged Jason and other believers before 'the city authorities' or 'politarchs' (Acts 17:6, 8). Archaeological evidence confirms this was the official title used in Thessalonian inscriptions for the board of magistrates governing the city. Typically five to six in number, these officials held executive and judicial authority. Luke's precise use of this local technical term demonstrates his historical accuracy and attention to administrative detail.