Barangay Santa Ana

Barangay Santa Ana forms part of Calatagan, a municipality in Batangas, and is classified as a mid-sized barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santa Ana had a population of 3,431. This made it the 6th largest of 25 barangays in Calatagan by population, placing it in the upper half of the municipality. Residents of Barangay Santa Ana accounted for approximately 5.84% of the total population of Calatagan, which stood at 58,719 in the same census year.

The barangay recorded 3,209 residents in the 2015 intercensal count and 3,431 residents in the 2020 Census — a net change of +6.9%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Santa Ana as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Calatagan is a municipality comprising 25 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Ana, 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 Santa Ana ranks 234th 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.

Barangay Santa Ana is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.