Ooh, Spinach, I beg to differ with your classification (as would many of my neighbors). Wissahickon includes the area closest to the park, bordered by Ridge and the train station. My street, Rochelle, is definitely considered Wissahickon - and the zip is 19128, as is Sumac, Kalos, Osborne - and the park side of Lauriston and Dawson. Your map has Righter as a divisor - not so!
(And yes, I would much prefer to be Wissahickon than Manayunk - and I like Manayunk).