Barangay Olo Cacamposan

Barangay Olo Cacamposan is a small barangay in the municipality of Mangatarem, located in the province of Pangasinan, in the Ilocos Region region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Olo Cacamposan had a population of 1,760. This made it the 9th largest of 82 barangays in Mangatarem by population, placing it among the most populous barangays of the municipality. Residents of Barangay Olo Cacamposan accounted for approximately 2.22% of the total population of Mangatarem, which stood at 79,323 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Olo Cacamposan moving from 1,525 residents to 1,760 residents, an intercensal change of +15.4%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Olo Cacamposan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mangatarem is a municipality comprising 82 barangays, and serves as the governing unit directly responsible for local services in Barangay Olo Cacamposan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Pangasinan, which contains 1,364 barangays across its component cities and municipalities, Barangay Olo Cacamposan ranks 754th by 2020 population. Pangasinan 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 Olo Cacamposan 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.