The City of Laoag is a 1st class city in the province of Ilocos Norte, Philippines. It is the capital city of Ilocos Norte, and the province's political, commercial, and industrial hub. It is the location of the Ilocos region's only commercial airport. The municipalities of San Nicolas, Paoay, Sarrat, Vintar, and Bacarra form its boundaries. The foothills of the Cordillera Central mountain range to the east, and the South China Sea to the west are its physical boundaries. Laoag experiences the prevailing monsoon climate of Northern Luzon, characterized by a dry season from November to April and a wet season from May to October, occasionally visited by powerful typhoons. According to the latest census, it had a population of 102,457 people in 19,751 households. "Laoag" , is an old, flourishing settlement known to Chinese and Japanese traders when the Spanish conquistador Juan de Salcedo arrived at the northern banks of Padsan River in 1572. Augustinian missionaries established the Roman Catholic Church in the area in 1580 and designated Saint William, the Hermit as its patron saint.