Barangay Santo Domingo

Situated in Bay, Laguna, Barangay Santo Domingo is one of 15 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay Santo Domingo had a population of 9,904. This made it the 1st largest of 15 barangays in Bay by population, placing it among the most populous barangays of the municipality. Residents of Barangay Santo Domingo accounted for approximately 14.74% of the total population of Bay, which stood at 67,182 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Domingo moving from 8,572 residents to 9,904 residents, an intercensal change of +15.5%. The trajectory indicates a growing community. Barangay Santo Domingo is officially classified as urban, reflecting the density and built-up character of the area.

Bay is a municipality comprising 15 barangays, and serves as the governing unit directly responsible for local services in Barangay Santo Domingo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Laguna, which contains 681 barangays across its component cities and municipalities, Barangay Santo Domingo ranks 85th by 2020 population. Laguna is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Santo Domingo 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.