What a wonderful opportunity to use a resource in the post office, independantly, without holding up the line or costing money. Also, not only can you learn from it but your son will have a resource to use when he goes there if need be. I would think you could make that book become fascinating to a young boy, showing him just how many zip codes there are, and how similar they are to each other in certain areas. It's a learning and bonding opportunity,you learn together.

I understand you wanted customer service here but this is government run and they are doing what they can without costing the taxpayers more money, which is where they get their income from as opposed to competition which they try to keep up with by spending as little tax dollars as they can get away with.