', officially the ', is a of the Philippines in the province of,. According to the, it has a population of people.HistoryFounded by Vicente Taguiam.In 1959, the barrio of Uldogan was renamed Laoag.Mayor Cesar Agonoy Mondala, Won the 2016 Election with the support of 1 & 1/2 barangay Captain out of 23 Barangay.BarangaysSan Agustin is politically subdivided into 23barangays.DemographicsIn the, the population of San Agustin, Isabela, was people, with a density of {{sigfig{{PH wikidata.Climate