There is one exception in the continental US..The Navajo Nation Indian Reservation. It is enormous, with a large portion of it's over 300,000 inhabitants living isolated without electricity and running water. The extreme level of poverty is sad, but that's another story. Cell phone reception is spotty, non existent in many areas. 50kw KTNN is the main source for info, news, entertainment, etc. It's literally a lifeline for many on the reservation. Once again, this is the exception, but places like this do exist.