Where do I need to go to get a copy of a will for someone who passed 11 years ago?

If the will was probated, it would be on file at the county office where the person died or resided.  If it wasn't, the attorney who prepared it may have a copy.  If it wasn't probated and you don't know the attorney who prepared it, you're probably out of luck unless a family member has a copy and is willing to share it with you.