Barangay Diliman II

Barangay Diliman II forms part of San Rafael, a municipality in Bulacan, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Diliman II had a population of 871. This made it the 34th largest of 34 barangays in San Rafael by population, placing it among the smaller barangays of the municipality. Residents of Barangay Diliman II accounted for approximately 0.84% of the total population of San Rafael, which stood at 103,097 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Diliman II changed from 850 to 871, a shift of +2.5% over the five-year period. This places the barangay among those with growing populations in San Rafael. The Philippine Statistics Authority classifies Barangay Diliman II as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Rafael is a municipality comprising 34 barangays, and serves as the governing unit directly responsible for local services in Barangay Diliman II, including public health, sanitation, peace and order, and civil registration. Within the wider province of Bulacan, which contains 569 barangays across its component cities and municipalities, Barangay Diliman II ranks 559th by 2020 population. Bulacan is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Diliman II 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.