Barangay San Antonio 1

Classified as a large barangay, Barangay San Antonio 1 is one of the administrative divisions of City of San Pablo in Laguna, CALABARZON, Philippines.

According to the 2020 Philippine census, Barangay San Antonio 1 had a population of 6,081. This made it the 13th largest of 80 barangays in City of San Pablo by population, placing it in the upper half of the city. Residents of Barangay San Antonio 1 accounted for approximately 2.13% of the total population of City of San Pablo, which stood at 285,348 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Antonio 1 changed from 5,287 to 6,081, a shift of +15.0% over the five-year period. This places the barangay among those with growing populations in City of San Pablo. Barangay San Antonio 1 is officially classified as urban, reflecting the density and built-up character of the area.

City of San Pablo is a city comprising 80 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio 1, 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 San Antonio 1 ranks 144th 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.

Like every Philippine barangay, Barangay San Antonio 1 is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.