Barangay T. Arlan (Pob.)

Barangay T. Arlan (Pob.) forms part of Santa Monica, a municipality in Surigao Del Norte, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay T. Arlan (Pob.) had a population of 1,003. This made it the 3rd largest of 11 barangays in Santa Monica by population, placing it in the upper half of the municipality. Residents of Barangay T. Arlan (Pob.) accounted for approximately 10.64% of the total population of Santa Monica, which stood at 9,423 in the same census year.

The barangay recorded 1,071 residents in the 2015 intercensal count and 1,003 residents in the 2020 Census — a net change of -6.3%, consistent with a contracting settlement. The Philippine Statistics Authority classifies Barangay T. Arlan (Pob.) as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Monica is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay T. Arlan (Pob.), including public health, sanitation, peace and order, and civil registration. Within the wider province of Surigao Del Norte, which contains 335 barangays across its component cities and municipalities, Barangay T. Arlan (Pob.) ranks 171st by 2020 population. Surigao Del Norte is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay T. Arlan (Pob.) 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.