Barangay Santo Niño

Barangay Santo Niño forms part of City of San Pedro, a city in Laguna, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Santo Niño had a population of 3,892. This made it the 23rd largest of 27 barangays in City of San Pedro by population, placing it among the smaller barangays of the city. Residents of Barangay Santo Niño accounted for approximately 1.19% of the total population of City of San Pedro, which stood at 326,001 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Niño moving from 4,172 residents to 3,892 residents, an intercensal change of -6.7%. The trajectory indicates a contracting community. Barangay Santo Niño is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of San Pedro is a city comprising 27 barangays, and serves as the governing unit directly responsible for local services in Barangay Santo Niño, 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 Niño ranks 225th 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.

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.