https://support.google.com/fiber/answer/6349491?hl=en IS the page on The gigabit communities. Not sure if there's a listing of locations, but you can call, chat, or visit to talk to representatives.
I wish I could be more helpful but I'd suggest getting on their website and chatting with someone or even calling them. I do know that some locations have free Google Fiber as long as the place is set up for it. If so, you just go get a free box at this location.
Thanks! Your answer is awaiting moderation.