Tagudin, officially the Municipality of Tagudin, is a municipality in the province of Ilocos Sur, Philippines. According to the 2020 census, it h…Tagudin, officially the Municipality of Tagudin, is a municipality in the province of Ilocos Sur, Philippines. According to the 2020 census, it had a population of 41,538 people. The name of the municipality was derived from a native cotton drying rack called "tagudan." A Spaniard who came to the place asked for its name, wrote it as the settlement when told by a resident, who thought that he was asking the name of the traditional apparatus she was using.