Barangay Santa Maria

Classified as a small barangay, Barangay Santa Maria is one of the administrative divisions of Dupax Del Sur in Nueva Vizcaya, Cagayan Valley, Philippines.

According to the 2020 Philippine census, Barangay Santa Maria had a population of 668. This made it the 16th largest of 19 barangays in Dupax Del Sur by population, placing it among the smaller barangays of the municipality. Residents of Barangay Santa Maria accounted for approximately 3.15% of the total population of Dupax Del Sur, which stood at 21,224 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santa Maria moving from 555 residents to 668 residents, an intercensal change of +20.4%. The trajectory indicates a growing community. Barangay Santa Maria is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Dupax Del Sur is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Maria, including public health, sanitation, peace and order, and civil registration. Within the wider province of Nueva Vizcaya, which contains 275 barangays across its component cities and municipalities, Barangay Santa Maria ranks 240th by 2020 population. Nueva Vizcaya is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Santa Maria is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.