Barangay San Antonio

Classified as a mid-sized barangay, Barangay San Antonio is one of the administrative divisions of Guagua in Pampanga, Central Luzon, Philippines.

According to the 2020 Philippine census, Barangay San Antonio had a population of 4,886. This made it the 10th largest of 31 barangays in Guagua by population, placing it in the upper half of the municipality. Residents of Barangay San Antonio accounted for approximately 3.79% of the total population of Guagua, which stood at 128,893 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Antonio changed from 4,436 to 4,886, a shift of +10.1% over the five-year period. This places the barangay among those with growing populations in Guagua. Barangay San Antonio is officially classified as urban, reflecting the density and built-up character of the area.

Guagua is a municipality comprising 31 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio, including public health, sanitation, peace and order, and civil registration. Within the wider province of Pampanga, which contains 538 barangays across its component cities and municipalities, Barangay San Antonio ranks 156th by 2020 population. Pampanga 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 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.