Hi,
I have a friend of mine who always talks about moving to East Mt. Airy one day. I am not sure what the breakdown is but I think the closer you are to Lincoln Drive Area, the better. Also, any homes with an address number over 70th and above pass the 80's is OK b/c you are right next door to Chestnut Hill. Zip code 19119 is one zip. They may have more zips but I don't know them. This is the big realtor for this area:
http://www.elfantwissahickon.com/ Check out the website b/c they seperate listings by east/west Mt. Airy. Germantown Ave. is booming w/ tons of cafes and eateries, really nice places.