Brief History of the Barangay
Barangay Silangan I is one of the 20 politically subdivided barangays in the Municipality of Rosario, Province of Cavite. The name Silangan I originated from the tagalog term "silangan" meaning “east”. People of the barrio called it “Silangan” because it is located at the municipality’s eastern portion where the sun rises. (Source from 2011 Development Plan of Silangan 1, prepared by Margaret Thatcher Group, Ateneo School of Government)
It is the 6th largest barangay in Rosario, Cavite.
Barangay Silangan I has a total land area of 2.56523 hectares.
Based on the PSA Census 2015, the population of barangay Silangan I was 7,683 people with a density of 300 per hectare.