Barangay Alobo

Barangay Alobo forms part of Santa Cruz, a municipality in Marinduque, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Alobo had a population of 971. This made it the 21st largest of 55 barangays in Santa Cruz by population, placing it in the middle tier of the municipality. Residents of Barangay Alobo accounted for approximately 1.78% of the total population of Santa Cruz, which stood at 54,692 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Alobo moving from 1,087 residents to 971 residents, an intercensal change of -10.7%. The trajectory indicates a contracting community. Barangay Alobo is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Cruz is a municipality comprising 55 barangays, and serves as the governing unit directly responsible for local services in Barangay Alobo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Marinduque, which contains 218 barangays across its component cities and municipalities, Barangay Alobo ranks 104th by 2020 population. Marinduque is classified as a 4th by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Alobo 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.