Barangay Tadlac

Situated in Alitagtag, Batangas, Barangay Tadlac is one of 19 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay Tadlac had a population of 1,393. This made it the 9th largest of 19 barangays in Alitagtag by population, placing it in the middle tier of the municipality. Residents of Barangay Tadlac accounted for approximately 5.19% of the total population of Alitagtag, which stood at 26,819 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Tadlac changed from 1,313 to 1,393, a shift of +6.1% over the five-year period. This places the barangay among those with growing populations in Alitagtag. Barangay Tadlac is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Alitagtag is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Tadlac, including public health, sanitation, peace and order, and civil registration. Within the wider province of Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay Tadlac ranks 739th by 2020 population. Batangas 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.