This was discussed once before. The problem is that the registration process does not require city and state, and that is not going to change. Many people don't list their location at all, and others say "third rock from the sun" or "outer space" or whatever.
Brad spoke up and asked people to give their location when they register, but the effort was not successful, and that was that. We are lucky, though.. there is a huge contingent of 914 enthusiasts in this area.
As far as searching a region or general area, it would be helpful if "state" was required, but it is not, and it's too late to change things now. People like being creative and expressing their individuality.. especially them dang people in Oregon!