Barangay Tambo Ilaya

Situated in Santa Teresita, Batangas, Barangay Tambo Ilaya is one of 17 barangays that make up the municipality within CALABARZON.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Tambo Ilaya had a population of 1,091. This made it the 11th largest of 17 barangays in Santa Teresita by population, placing it in the middle tier of the municipality. Residents of Barangay Tambo Ilaya accounted for approximately 5.06% of the total population of Santa Teresita, which stood at 21,559 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Tambo Ilaya moving from 920 residents to 1,091 residents, an intercensal change of +18.6%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Tambo Ilaya as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Teresita is a municipality comprising 17 barangays, and serves as the governing unit directly responsible for local services in Barangay Tambo Ilaya, including public health, sanitation, peace and order, and civil registration. Within the wider province of Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay Tambo Ilaya ranks 837th by 2020 population. Batangas 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.