What are the Centralia, Pennsylvania Zip Codes for 2020, 2019Primary Zip Codes for CentraliaZip CodePrimary CitySecondary City17921AshlandCentralia, Big Mine Run Junction, Homesville, Mable, Mowry, Taylorville, Fountain Springs, HelfensteinCities sharing Zip Codes with CentraliaZip CodePrimary CitySecondary CityMore Information17921AshlandCentralia17921AshlandHelfenstein17921AshlandBig Mine Run Junction17921AshlandHomesville17921AshlandMable17921AshlandMowry17921AshlandTaylorville17921AshlandFountain Springs Fountain Springs population stats Advertisements