Categories: Philippines geography stubs | Municipalities in the Philippines A city (lungsod, sometimes siyudad, in Filipino) is a tier of local government in the Philippines. ... A municipality (bayan in Filipino) is a local government unit in the Philippines. ... La Union is a province of the Philippines located in the Ilocos Region in Luzon. ... To see all articles with the same name, see San Fernando. ... Agoo is a 2nd class municipality in the province of La Union, Philippines. ... Aringay (16°N 26, 120°E 21) is a municipality in the province of La Union in the Ilocos Region of the Philippines. ... Bacnotan is a 2nd class municipality in the province of La Union, Philippines. ... Bagulin is a 5th class municipality in the province of La Union, Philippines. ... Balaoan is a 3rd class municipality in the province of La Union, Philippines. ... Bangar is a 3rd class municipality in the province of La Union, Philippines. ... The Municipality of Bauang is located in La Union in the Phillipines, and is bordered by San Fernando City to the north, Caba municipality to the south, Naguilian municipality to the east, and the South China Sea to the west. ... Caba is a small municipality in the province of La Union, in the Philippines. ... Rosario is a 3rd class municipality in the province of La Union, Philippines. ...