San Juan City is situated in the central part of Metropolitan Manila, known as one of the boundaries among the sixteen
cities and one municipality comprising the metropolis, and the western boundaries are Quezon City and the City of Manila, Respectively. While the City of Mandaluyong from its southern and eastern boundaries. San Juan a slightly rolling terrain. However, areas like Barangay Progreso near San Juan river is Low and Prone to flooding all streets of the Barangay.
Barangay Salapan is Located in the northwestern part of the City of San Juan. It is surrounded by Salapan Creek in the
West, Northeastern and in the East boarder is the Barangay Ermitano and the South boarder is the centerline of the Aurora Boulevard facing Barangay Balong Bato.
San Juan has a land area of 5.94 sq. km. It is one of the smallest and congested cities in the metropolis occupying
0.009% of Metropolitan Manila’s 636 sq. km. Barangay Salapan’s land area is 17,862 has. Which belong to District 1 out of Two Districts of San Juan City, with a population of 8,747 (2015 NSO) and 2,143 households or families.