Barangay Mariano Espeleta III

Barangay Mariano Espeleta III forms part of City of Imus, a city in Cavite, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Mariano Espeleta III had a population of 1,423. This made it the 77th largest of 97 barangays in City of Imus by population, placing it among the smaller barangays of the city. Residents of Barangay Mariano Espeleta III accounted for approximately 0.29% of the total population of City of Imus, which stood at 496,794 in the same census year.

The barangay recorded 2,206 residents in the 2015 intercensal count and 1,423 residents in the 2020 Census — a net change of -35.5%, consistent with a contracting settlement. The Philippine Statistics Authority classifies Barangay Mariano Espeleta III as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Imus is a city comprising 97 barangays, and serves as the governing unit directly responsible for local services in Barangay Mariano Espeleta III, including public health, sanitation, peace and order, and civil registration. Within the wider province of Cavite, which contains 829 barangays across its component cities and municipalities, Barangay Mariano Espeleta III ranks 620th by 2020 population. Cavite 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.