Barangay San Antonio Este

Classified as a mid-sized barangay, Barangay San Antonio Este is one of the administrative divisions of Lupao in Nueva Ecija, Central Luzon, Philippines.

According to the 2020 Philippine census, Barangay San Antonio Este had a population of 2,189. This made it the 5th largest of 24 barangays in Lupao by population, placing it in the upper half of the municipality. Residents of Barangay San Antonio Este accounted for approximately 4.77% of the total population of Lupao, which stood at 45,917 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio Este moving from 2,119 residents to 2,189 residents, an intercensal change of +3.3%. The trajectory indicates a growing community. Barangay San Antonio Este is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lupao is a municipality comprising 24 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio Este, including public health, sanitation, peace and order, and civil registration. Within the wider province of Nueva Ecija, which contains 849 barangays across its component cities and municipalities, Barangay San Antonio Este ranks 397th by 2020 population. Nueva Ecija 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.