Dollar Tree will open 13 new stores in Pennsylvania, most of them in Philadelphia and other parts of Southeastern Pennsylvania. Dollar Tree is opening a 9,970-square-foot store near Morrell and Frankford Avenues in Morrell Park and a 10,600-square-foot location on North Broad Street near Cayuga in Nicetown. The other new stores are in Bensalem, Chester, Fairless Hills, Levittown, Woodlyn, Southampton, Bethlehem, Allentown, and Dickson City.