Barangay Ajos

Situated in Catanauan, Quezon, Barangay Ajos is one of 46 barangays that make up the municipality within CALABARZON.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Ajos had a population of 1,674. This made it the 19th largest of 46 barangays in Catanauan by population, placing it in the middle tier of the municipality. Residents of Barangay Ajos accounted for approximately 2.30% of the total population of Catanauan, which stood at 72,752 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Ajos changed from 1,883 to 1,674, a shift of -11.1% over the five-year period. This places the barangay among those with contracting populations in Catanauan. The Philippine Statistics Authority classifies Barangay Ajos as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Catanauan is a municipality comprising 46 barangays, and serves as the governing unit directly responsible for local services in Barangay Ajos, including public health, sanitation, peace and order, and civil registration. Within the wider province of Quezon, which contains 1,242 barangays across its component cities and municipalities, Barangay Ajos ranks 387th by 2020 population. Quezon is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Ajos 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.