Dade County

 is a location in Red Dead Redemption.

Background
Dade County is an unknown county that is mentioned during the dialogue in the mission Justice in Pike's Basin. It is mentioned when John Marston and Marshal Johnson are talking about the advancements in technology in the recent years and the marshal mentions that people considered those from Dade County to be exotic whereas now people from the Midwest can travel to Cholla Springs in 6 days. It is presumed that Dade County is in the U.S.A. because of its name however there is no conclusive evidence to say that it is apart from that it doesn't sound mexican.