Barangay West Dirita

Barangay West Dirita forms part of San Antonio, a municipality in Zambales, and is classified as a mid-sized barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay West Dirita had a population of 3,845. This made it the 4th largest of 14 barangays in San Antonio by population, placing it in the upper half of the municipality. Residents of Barangay West Dirita accounted for approximately 10.27% of the total population of San Antonio, which stood at 37,450 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay West Dirita changed from 3,147 to 3,845, a shift of +22.2% over the five-year period. This places the barangay among those with growing populations in San Antonio. The Philippine Statistics Authority classifies Barangay West Dirita as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Antonio is a municipality comprising 14 barangays, and serves as the governing unit directly responsible for local services in Barangay West Dirita, 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 West Dirita ranks 45th 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.