Barangay Bagbaguin

Barangay Bagbaguin forms part of Santa Maria, a municipality in Bulacan, and is classified as a large barangay.

According to the 2020 Philippine census, Barangay Bagbaguin had a population of 7,839. This made it the 17th largest of 24 barangays in Santa Maria by population, placing it in the middle tier of the municipality. Residents of Barangay Bagbaguin accounted for approximately 2.70% of the total population of Santa Maria, which stood at 289,820 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Bagbaguin changed from 8,912 to 7,839, a shift of -12.0% over the five-year period. This places the barangay among those with contracting populations in Santa Maria. Barangay Bagbaguin is officially classified as urban, reflecting the density and built-up character of the area.

Santa Maria is a municipality comprising 24 barangays, and serves as the governing unit directly responsible for local services in Barangay Bagbaguin, including public health, sanitation, peace and order, and civil registration. Within the wider province of Bulacan, which contains 569 barangays across its component cities and municipalities, Barangay Bagbaguin ranks 137th by 2020 population. Bulacan 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.