Benteng-Sapilang is a barangay of the philippine municipality Rosario in the province La Union
in Ilocos Region
which is part of the Luzon group
Benteng-Sapilang belongs to the barangays of Municipality Rosario which are in the outlying area.
The municipality Rosario with a population of about 49,025 and its 33 barangays belong to the partly urban areas in the Philippines. While some of the barangays developed modern urban structures, some others, especially those which are seated in the outlying areas, remained rural. By the end of 2007 Benteng-Sapilang had 896 residents.
Other barangays of Rosario are:
Alipang, Ambangonan, Amlang, Bacani, Bangar, Bani, Cadumanian, Camp One, Carunuan East, Carunuan West, Casilagan, Cataguingtingan, Concepcion, Damortis, Gumot-Nagcolaran, Inabaan Norte, Inabaan Sur, Marcos, Nagtagaan, Nangcamotian, Parasapas, Poblacion East, Poblacion West, Puzon, Rabon, San Jose, Subusub, Tabtabungao, Tanglag, Tay-ac, Udiao, Vila