Barangay Biga

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

According to the 2020 Philippine census, Barangay Biga had a population of 3,183. This made it the 8th largest of 25 barangays in Calatagan by population, placing it in the upper half of the municipality. Residents of Barangay Biga accounted for approximately 5.42% of the total population of Calatagan, which stood at 58,719 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Biga moving from 2,849 residents to 3,183 residents, an intercensal change of +11.7%. The trajectory indicates a growing community. Barangay Biga is officially classified 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 Biga, 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 Biga ranks 266th 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.

Like every Philippine barangay, Barangay Biga 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.