In the 1960s, a township resident suggested the name of the King of Prussia Post Office be changed to Upper Merion to facilitate mail delivery and gain independent status since it served several other areas.
The name “King of Prussia” was adopted from the King of Prussia Inn. However, King of Prussia was not a pre-revolutionary village. In 1765, four areas were mentioned: Swedesford, the largest, (now the community of Swedesburg and Borough of Bridgeport); Matsonford (now the Borough of West Conshohocken); the Gulf, (now Gulf Mills); and the Forge (now Valley Forge). Technically, the former King of Prussia PO building at Town Center Rd. and Prince Frederick St. was not in King of Prussia, but in the Red Hill section of Upper Merion.
Many old township villages, such as Abrams, Shainline, Henderson, Red Hill, and portions of Port Kennedy, Hughes Park, King Manor, Gulph Mills and Swedeland, were placed under the extended postal boundaries of the King of Prussia Post Office in 1958. These have on occasion, been erroneously referred to as King of Prussia or King of Prussia area.