Barangay Diaz

Barangay Diaz forms part of San Francisco, 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 Diaz had a population of 1,851. This made it the 2nd largest of 11 barangays in San Francisco by population, placing it among the most populous barangays of the municipality. Residents of Barangay Diaz accounted for approximately 12.06% of the total population of San Francisco, which stood at 15,347 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Diaz moving from 1,779 residents to 1,851 residents, an intercensal change of +4.0%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Diaz as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Francisco is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay Diaz, 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 Diaz ranks 79th 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.

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.