Barangay Santa Lucia

Classified as a very small barangay, Barangay Santa Lucia is one of the administrative divisions of Itbayat in Batanes, Cagayan Valley, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santa Lucia had a population of 438. This made it the 5th largest of 5 barangays in Itbayat by population, placing it among the smaller barangays of the municipality. Residents of Barangay Santa Lucia accounted for approximately 14.00% of the total population of Itbayat, which stood at 3,128 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santa Lucia moving from 422 residents to 438 residents, an intercensal change of +3.8%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Santa Lucia as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Itbayat is a municipality comprising 5 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Lucia, including public health, sanitation, peace and order, and civil registration. Within the wider province of Batanes, which contains 29 barangays across its component cities and municipalities, Barangay Santa Lucia ranks 15th by 2020 population. Batanes is classified as a 5th by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Santa Lucia 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.