36°44′37.1″N 3°5′41.1″E / 36.743639°N 3.094750°E
The Department of Algiers (French: département d'Alger, [depaʁtəmɑ̃ dalʒe], Arabic: عمّالة الجزائر)[1] was a former French department in Algeria. The department of Alger existed between 1848 and 1974.
Considered a French province, Algeria was departmentalized on December 9, 1848. The departments created on this date were the civil zone of the three provinces corresponding to the beyliks of the Regency of Algiers recently conquered. Consequently, the city of Algiers was made prefecture of the department bearing its name, then covering the center of Algeria, leaving the Constantine Department to the east and the department of Oran to the west.