Barangay Santiago

Barangay Santiago is a very small barangay in the municipality of Sanchez-Mira, located in the province of Cagayan, in the Cagayan Valley region of the Philippines.

According to the 2020 Philippine census, Barangay Santiago had a population of 255. This made it the 18th largest of 18 barangays in Sanchez-Mira by population, placing it among the smaller barangays of the municipality. Residents of Barangay Santiago accounted for approximately 0.97% of the total population of Sanchez-Mira, which stood at 26,164 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Santiago changed from 480 to 255, a shift of -46.9% over the five-year period. This places the barangay among those with contracting populations in Sanchez-Mira. Barangay Santiago is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sanchez-Mira is a municipality comprising 18 barangays, and serves as the governing unit directly responsible for local services in Barangay Santiago, including public health, sanitation, peace and order, and civil registration. Within the wider province of Cagayan, which contains 820 barangays across its component cities and municipalities, Barangay Santiago ranks 787th by 2020 population. Cagayan 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.