A novel maize variety designated PHPCW and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PHPCW with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PHPCW through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PHPCW or a trait conversion of PHPCW with another maize variety. Inbred maize varieties derived from maize variety PHPCW, methods for producing other inbred maize varieties derived from maize variety PHPCW and the inbred maize varieties and their parts derived by the use of those methods.