But there are a couple of tools that will actually let you see results based on geo coordinates, which is really cool and very accurate. Those tools include the Local Falcon, and there is a Chrome extension which is 100% free, that you can put in your browser, called GS Location Changer.
I use this all the time in an incognito browser if I want to just see what search results look like from a very, very specific location. Now these two levels, depending on what industry you are working in, it's really important to know which level you need to be looking at. If you work with lawyers, for example, zip code level is usually good enough.