When I first traveled East for grad school I had no idea "pop" was called "soda" or that other names existed. I was at Stony Brook and someone asked "where's the soda machine"? Somehow I thought they must have a speech impediment and answered "I didn't know Stony Brook has a Home Economics dept" .. Of course they thought I must be crazy..
here is a map of regionalisms with the pop/soda boundary and much more
Tom points out the boundary for kitty/catty corner runs through NJ...
It should be noted the data set for these maps came from an Internet survey done about a decade ago. It was able to cover many words, but is of questionable accuracy. The gold standard is DARE - the Dictionary of American Regional English. A digital edition is due out this year.