Barangay Kalilangan

Barangay Kalilangan forms part of San Pablo, a municipality in Zamboanga Del Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Kalilangan had a population of 995. This made it the 11th largest of 28 barangays in San Pablo by population, placing it in the middle tier of the municipality. Residents of Barangay Kalilangan accounted for approximately 3.73% of the total population of San Pablo, which stood at 26,648 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Kalilangan moving from 961 residents to 995 residents, an intercensal change of +3.5%. The trajectory indicates a growing community. Barangay Kalilangan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Pablo is a municipality comprising 28 barangays, and serves as the governing unit directly responsible for local services in Barangay Kalilangan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Zamboanga Del Sur, which contains 779 barangays across its component cities and municipalities, Barangay Kalilangan ranks 375th by 2020 population. Zamboanga Del Sur is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.