Barangay Colongan

Situated in Rosario, Batangas, Barangay Colongan is one of 48 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay Colongan had a population of 2,128. This made it the 28th largest of 48 barangays in Rosario by population, placing it in the middle tier of the municipality. Residents of Barangay Colongan accounted for approximately 1.66% of the total population of Rosario, which stood at 128,352 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Colongan moving from 1,727 residents to 2,128 residents, an intercensal change of +23.2%. The trajectory indicates a growing community. Barangay Colongan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Rosario is a municipality comprising 48 barangays, and serves as the governing unit directly responsible for local services in Barangay Colongan, 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 Colongan ranks 502nd 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 Colongan 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.