Barangay Villa Undayon

Barangay Villa Undayon forms part of City of Bayugan, a city in Agusan Del Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Villa Undayon had a population of 1,444. This made it the 26th largest of 43 barangays in City of Bayugan by population, placing it in the middle tier of the city. Residents of Barangay Villa Undayon accounted for approximately 1.32% of the total population of City of Bayugan, which stood at 109,499 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Villa Undayon changed from 1,609 to 1,444, a shift of -10.3% over the five-year period. This places the barangay among those with contracting populations in City of Bayugan. Barangay Villa Undayon is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Bayugan is a city comprising 43 barangays, and serves as the governing unit directly responsible for local services in Barangay Villa Undayon, including public health, sanitation, peace and order, and civil registration. Within the wider province of Agusan Del Sur, which contains 314 barangays across its component cities and municipalities, Barangay Villa Undayon ranks 188th by 2020 population. Agusan Del Sur is classified as a 1st 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.