Barangay Sisim

Classified as a small barangay, Barangay Sisim is one of the administrative divisions of Peñablanca in Cagayan, Cagayan Valley, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Sisim had a population of 1,898. This made it the 12th largest of 24 barangays in Peñablanca by population, placing it in the middle tier of the municipality. Residents of Barangay Sisim accounted for approximately 3.77% of the total population of Peñablanca, which stood at 50,300 in the same census year.

The barangay recorded 1,756 residents in the 2015 intercensal count and 1,898 residents in the 2020 Census — a net change of +8.1%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Sisim as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Peñablanca is a municipality comprising 24 barangays, and serves as the governing unit directly responsible for local services in Barangay Sisim, including public health, sanitation, peace and order, and civil registration. Within the wider province of Cagayan, which contains 820 barangays across its component cities and municipalities, Barangay Sisim ranks 208th by 2020 population. Cagayan 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.