Barangay Tanza Sur

Barangay Tanza Sur forms part of Panay, a municipality in Capiz, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Tanza Sur had a population of 1,351. This made it the 12th largest of 42 barangays in Panay by population, placing it in the upper half of the municipality. Residents of Barangay Tanza Sur accounted for approximately 2.76% of the total population of Panay, which stood at 48,890 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Tanza Sur changed from 1,398 to 1,351, a shift of -3.4% over the five-year period. This places the barangay among those with contracting populations in Panay. Barangay Tanza Sur is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Panay is a municipality comprising 42 barangays, and serves as the governing unit directly responsible for local services in Barangay Tanza Sur, including public health, sanitation, peace and order, and civil registration. Within the wider province of Capiz, which contains 473 barangays across its component cities and municipalities, Barangay Tanza Sur ranks 219th by 2020 population. Capiz is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Tanza Sur 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.