Barangay Olo

Barangay Olo is a small barangay in the municipality of Siquijor, located in the province of Siquijor, in the Central Visayas region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Olo had a population of 829. This made it the 15th largest of 42 barangays in Siquijor by population, placing it in the middle tier of the municipality. Residents of Barangay Olo accounted for approximately 2.87% of the total population of Siquijor, which stood at 28,915 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Olo changed from 736 to 829, a shift of +12.6% over the five-year period. This places the barangay among those with growing populations in Siquijor. The Philippine Statistics Authority classifies Barangay Olo as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Siquijor is a municipality comprising 42 barangays, and serves as the governing unit directly responsible for local services in Barangay Olo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Siquijor, which contains 134 barangays across its component cities and municipalities, Barangay Olo ranks 54th by 2020 population. Siquijor is classified as a 5th by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Olo 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.