Aringay is a second class municipality in the province of La Union, Philippines. According to the 2015 census, it has a population of 47,458 people. Its boundaries are formed by the municipalities of Caba and Burgos to the north, Agoo to the south, the foothills of the Cordillera Central mountain range to the east, and the Lingayen Gulf to the west. Aringay belongs to District 2 in the province.