Troy, PA (Pennsylvania) Houses and Residents. Total population: 1,283 (Urban population: 0, Rural population: 1,508 (all nonfarm)) Houses: 617 (581 occupied: 288 owner occupied, 244 renter occupied) Housing density: 787 houses/condos per square mile. Median price asked for vacant for-sale houses and condos in 2015 in this county: $121,986.