Go to this website listed below, and select your state from the bottom of the page.
http://pure-gas.org/index.jsp <-- Site
http://pure-gas.org/extensions/map.html <-- Map
Bear in mind, some gas stations advertise E0 which means no ethanol, however some have been found to actually contain it, they are few and far between, but if you feel you need to test it yourself kits can be found here:
http://www.fuel-testers.com/quikcheck.html
Though you can store a bike with ethanol gas in it and some stable made for ethanol, from what I've been told it's recommended non-ethanol gas be used instead. I've also heard draining tanks and carbs is better, but some argue parts may rust that are exposed to air.
