This is one of the most read pages on the site, so I guess there must be a need for more information of this sort. The Sidran Institute gave me the original list, which I have now removed because it was outdated. Sidran has put the comprehensive list of U.S. treatment centers online themselves as a pdf, so read that, but also please be sure to check the comments section to this page after you do, as many people have shared their experiences about specific places. Sidran has an excellent help desk. If you need help locating a treatment facility, contact them. If you have concerns about contacting a place over the net, they have a page explaining how the help desk works. If you want to help out, their help desk is currently without funding and run all by volunteers, so make a donation or volunteer once you are better. They will use it to make sure someone is there when you need them and to update their resources to make it easier for volunteers to find the information you need. They are doing great work.
Sidran's list may not be exhaustive, but it is up to date. If you know of a place that treats PTSD that they do not list, share your experience in the comments.