Barangay San Lorenzo

Barangay San Lorenzo is a mid-sized barangay in the municipality of Masinloc, located in the province of Zambales, in the Central Luzon region of the Philippines.

According to the 2020 Philippine census, Barangay San Lorenzo had a population of 3,359. This made it the 6th largest of 13 barangays in Masinloc by population, placing it in the middle tier of the municipality. Residents of Barangay San Lorenzo accounted for approximately 6.16% of the total population of Masinloc, which stood at 54,529 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Lorenzo moving from 3,151 residents to 3,359 residents, an intercensal change of +6.6%. The trajectory indicates a growing community. Barangay San Lorenzo is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Masinloc is a municipality comprising 13 barangays, and serves as the governing unit directly responsible for local services in Barangay San Lorenzo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Zambales, which contains 247 barangays across its component cities and municipalities, Barangay San Lorenzo ranks 59th by 2020 population. Zambales is classified as a 2nd 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.