Laoag ([laʊˈag]), officially the City of Laoag (Ilocano: Siudad ti Laoag; Filipino: Lungsod ng Laoag), is a 3rd class component city and capital of the province of Ilocos Norte, Philippines. According to the 2020 census, it has a population of 111,651 people.[3] It is the province's most populous, political, commercial, and industrial hub and the location of Ilocos Region's busiest commercial airport. It is also the northernmost city in the Philippines.