Barangay San Pedro

Barangay San Pedro forms part of Santa Cruz, a municipality in Ilocos Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay San Pedro had a population of 584. This made it the 35th largest of 49 barangays in Santa Cruz by population, placing it in the middle tier of the municipality. Residents of Barangay San Pedro accounted for approximately 1.41% of the total population of Santa Cruz, which stood at 41,366 in the same census year.

The barangay recorded 591 residents in the 2015 intercensal count and 584 residents in the 2020 Census — a net change of -1.2%, consistent with a broadly stable settlement. Barangay San Pedro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Cruz is a municipality comprising 49 barangays, and serves as the governing unit directly responsible for local services in Barangay San Pedro, 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 San Pedro ranks 520th 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.

Barangay San Pedro is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.