Does anyone know of a website that reveals the areas in the USA from which Comet Ison can be viewed?
I you are in the US, and are able to see the Sun, you could see ISON.
Right now, it is too close to the Sun to see while inside the atmosphere, but, next week, you should be able to catch it low on the horizon (assuming it makes it around the Sun). Find a place with a low horizon, or, on top of a tall building or hill/mountain, and you are set. Check with a nearby science center and ask about local Astronomy clubs. They will be doing something as soon as ISON is safe to see.
What ever you do, do NOT look at the Sun directly. It can damage your eyes. Let the comet pull away a bit before trying to see it.
It’s not moving that fast, so, you have time.