Barangay San Lorenzo

Classified as a small barangay, Barangay San Lorenzo is one of the administrative divisions of City of Ilagan in Isabela, Cagayan Valley, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Lorenzo had a population of 1,279. This made it the 49th largest of 91 barangays in City of Ilagan by population, placing it in the middle tier of the city. Residents of Barangay San Lorenzo accounted for approximately 0.81% of the total population of City of Ilagan, which stood at 158,218 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Lorenzo moving from 1,187 residents to 1,279 residents, an intercensal change of +7.8%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay San Lorenzo as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Ilagan is a city comprising 91 barangays, and serves as the governing unit directly responsible for local services in Barangay San Lorenzo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay San Lorenzo ranks 503rd by 2020 population. Isabela is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Lorenzo 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.