High Quality Content by WIKIPEDIA articles! Cesar Department (Spanish: Departamento del Cesar) or simply Cesar is a department of Colombia located in the north of the country in the Caribbean region, bordering to the north with the Department of La Guajira, to the west with the Department of Magdalena and Department of Bolivar, to the south with Department of Santander, to the west with the Department of North Santander, and to the east with the country of Venezuela (Zulia State). The department capital city is Valledupar.