Depends on where you live, largely. Between my old home and my new home (53209 and 53214), there was a 15% jump in my insurance.
www.amfam.com
www.progressive.com
www.statefarm.com
Those are good places to start - they all have automatic quote programs to give you an idea. Just enter your name, location, number of crashes/tickets, and what type of car you're wanting to insure, and it'll spout a number at you.