Barangay Pacac

Situated in Tagudin, Ilocos Sur, Barangay Pacac is one of 43 barangays that make up the municipality within Ilocos Region.

According to the 2020 Philippine census, Barangay Pacac had a population of 941. This made it the 23rd largest of 43 barangays in Tagudin by population, placing it in the middle tier of the municipality. Residents of Barangay Pacac accounted for approximately 2.27% of the total population of Tagudin, which stood at 41,538 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Pacac changed from 857 to 941, a shift of +9.8% over the five-year period. This places the barangay among those with growing populations in Tagudin. Barangay Pacac is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Tagudin is a municipality comprising 43 barangays, and serves as the governing unit directly responsible for local services in Barangay Pacac, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Sur, which contains 768 barangays across its component cities and municipalities, Barangay Pacac ranks 287th by 2020 population. Ilocos Sur is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.