<Ul> <Li> Bucks </Li> <Li> Philadelphia </Li> <Li> Delaware </Li> <Li> Montgomery </Li> <Li> Chester </Li> </Ul> <P> This valley primarily contains the Philadelphia metropolitan area . </P> <P> The Pennsylvania Piedmont region is a heavily agricultural section of the Piedmont Plateau located in Eastern Pennsylvania frequently cited as a candidate for extensive ecological preservation . </P> <P> Consisting of the following counties: </P>

The allegheny national forest is part of the piedmont region