Hi!
Rural health is an area where PA's can make a very significant contribution, allowing health care to extend to areas that cannot support a doctor's salary.
The Rural Health Caucus of the AAPA (
http://www.aapa.org/caucus/RHC/index.html) is a good place for information.
From what I've heard, rural health is a difficult place to have your first job as a PA, because you may need more access to consult on your first year or two, and having your supervising physician in another town or city can be difficult. It might be better to start elsewhere for a couple of years, and then when you are more comfortable in the practice, move into rural health care.