Nagbukel located in the administrative territorial entity Ilocos Sur
Nagbukel, officially the Municipality of Nagbukel (Ilocano: Ili ti Nagbukel; Filipino: Bayan ng Nagbukel), is a 5th class municipality in the province of Ilocos Sur, Philippines. According to the 2020 census, it has a population of 5,465 people.Etymology
The name of the municipality was thought to have come from the round shape of one of the hills in the area.  People in the area would utter, "Anian nga nagbukel" (Ilocano meaning "How round it is.").
Another origin of the municipality's name comes from three small hills in the southern part of the municipality.
Another origin of the town's name comes from the irregular distribution of the barangays of Nagbukel and nearby Narvacan.  Negotiations were made in such a way that the place east of the Kayapa River become part of Nagbukel and places west of the river become part of Narvacan.  The distance from north to south was equal to the distance from east to west.  The resulting area is round, hence the name "Nagbukel."
The barrios which composed the municipality today were formerly a part of Narvacan.  However, in 1896, Nagbukel became a town under the Spanish Government.  It was only in 1899 when the town became a regular municipality.
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