This is a quiet (mostly) neighborhood, so be aware of your surroundings. Watch out for Muggles and Snatchers. The cache may not be at the exact coordinates, but should be close. Also, just so you know, do watch out for bears, and I am not joking. The coordinates may not be spot on, but should be close. There should be some sign of the cache right there. Just look for the acronym (from Wikipedia, "a word or name formed as an abbreviation from the initial components in a phrase or a word, usually individual letters") for State Tax On Pop and you should find it.