Barangay Prenza I

Barangay Prenza I forms part of Marilao, a municipality in Bulacan, and is classified as a large barangay.

According to the 2020 Philippine census, Barangay Prenza I had a population of 9,019. This made it the 10th largest of 16 barangays in Marilao by population, placing it in the middle tier of the municipality. Residents of Barangay Prenza I accounted for approximately 3.54% of the total population of Marilao, which stood at 254,453 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Prenza I moving from 7,065 residents to 9,019 residents, an intercensal change of +27.7%. The trajectory indicates a growing community. Barangay Prenza I is officially classified as urban, reflecting the density and built-up character of the area.

Marilao is a municipality comprising 16 barangays, and serves as the governing unit directly responsible for local services in Barangay Prenza I, 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 Prenza I ranks 105th 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.