Barangay Baybayabas

Classified as a small barangay, Barangay Baybayabas is one of the administrative divisions of Santiago in Ilocos Sur, Ilocos Region, Philippines.

According to the 2020 Philippine census, Barangay Baybayabas had a population of 614. This made it the 14th largest of 24 barangays in Santiago by population, placing it in the middle tier of the municipality. Residents of Barangay Baybayabas accounted for approximately 3.15% of the total population of Santiago, which stood at 19,471 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Baybayabas moving from 566 residents to 614 residents, an intercensal change of +8.5%. The trajectory indicates a growing community. Barangay Baybayabas is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santiago is a municipality comprising 24 barangays, and serves as the governing unit directly responsible for local services in Barangay Baybayabas, 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 Baybayabas ranks 496th 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.