This Wikipedia article mentions Amish people in 22 states and Canada.
From what I’ve been able to ascertain, there are Amish communities in:
…which means there are at least 18 states to go. Where are the rest?
Furthermore, are there any outside the US and Canada?
If not strictly Amish, are there any other insular Christian communities which shun modern conveniences outside the US? (Note that I’m not talking about monastics; I’m talking about communities with families and farms and their own little economies and whatnot).