Fishtown is a neighborhood in Philadelphia, Pennsylvania, United States. Located immediately northeast of Center City, its borders are somewhat disputed today due to many factors, but are roughly defined by the triangle created by the Delaware River, Frankford Avenue, and York Street. Some newer residents expand the area to Lehigh Avenue, while some older residents shrink the area to Norris Street. It is served by the Market–Frankford Line rapid transit subway/elevated of the SEPTA system.