Passyunk Square is a neighborhood in South Philadelphia bounded by Broad Street to the west, 6th Street to the east, Tasker Street to the south and Washington Avenue to the north. Passyunk Square is bordered by the Bella Vista, Hawthorne, Central South Philadelphia, Wharton, and Point Breeze neighborhoods. The neighborhood's etymology originates from the Lenape word "pachsegink", meaning “in the valley”. The name came from the 1800s Passyunk Township, Pennsylvania which named Passyunk Square Park, located between 12th, 13th, Reed and Wharton Streets. The park was eventually renamed Columbus Square Park, and subsequently the neighborhood became known as Columbus Square. Sue Montella, Geoff DiMasi, and a group of neighbors revived the Passyunk Square name when forming the Passyunk Square Civic Association in 2003. The name "Passyunk Square" was researched and proposed by Geoff DiMasi after considering other historical names like Wharton that had been used in the neighborhood over the years. The area has come to be known as Little Saigon for its large Vietnamese American commercial and residential presence, - Source: Wikipedia
