Pililla has an estimated total land area of 8,218 hectares. Halayhayin is its largest barangay, occupying 32 percent of the town’s land area while the poblacion barangays of Imatong, Wawa and Takungan are the smallest. In terms of area, it ranks as the fourth largest town in Rizal province. The five poblacion barangays account for 30 % of Pililla’s total land area. Most built-up areas are located in the poblacion.